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Esta documentación describe la versión 4.0.0, todavía sin publicar. La versión actual en PyPI es la 3.3.0 y no incluye todo lo que se describe aquí.

Informe de conformidad

El activo diferencial de phonometry no es la lista de funcionalidades sino la prueba que hay detrás: cada métrica se implementa a partir del texto de la norma que la rige, y un informe numérico de conformidad fija cada comprobación a una norma, un apartado o tabla, el valor esperado normativo y el valor que la biblioteca calcula realmente, con la desviación y un veredicto de cumple/no cumple.

El informe es un documento autogenerado que la CI regenera en cada pull request (la compilación falla si se desincroniza del código), de modo que siempre está en sincronía con la biblioteca publicada. Cada fila de aquí abajo se compone en tiempo de compilación a partir de docs/conformance.json, el documento que escriben las propias comprobaciones; las mismas filas en forma de tabla plana están en docs/CONFORMANCE.md.

  • Clases de filtro: el veredicto de clase IEC 61260-1:2014 por arquitectura de filtro, con la atenuación relativa medida en la banda determinante, el límite de clase 1 que debe superar y el margen en dB.
  • Ponderaciones frecuenciales: desviaciones de A/C (IEC 61672-1 Tabla 3) y G (ISO 7196 A.3) respecto a las curvas nominales, juzgadas en la frecuencia determinante con la banda de tolerancia aplicable y el margen.
  • Las más cerca de su límite publicado: cada comprobación conoce el límite frente al que se la juzga, así que las diez que consumen la mayor fracción del suyo aparecen primero. Una fracción alta no es un fallo: es el margen con el que la comprobación cumple, y es lo que una tabla de tolerancias pregunta en realidad.
  • Una tabla de conformidad por dominio (niveles, psicoacústica, acústica de salas y de la edificación, potencia acústica, materiales, vibración, incertidumbre, …): la norma y el apartado, la magnitud, el valor normativo, el valor que calcula la biblioteca, el límite publicado, la desviación y qué parte del límite consume. Los valores esperados provienen de los ejemplos resueltos de las propias normas o de expresiones en forma cerrada sintetizadas a un resultado conocido.

Cada sección de dominio es plegable y permanece plegada mientras todas sus filas pasan; una sección con alguna fila fallida se abre sola. En pantallas estrechas las tablas anchas se desplazan lateralmente dentro de su propia caja.

El registro de comprobaciones vive en scripts/conformance_report.py y se ejecuta en local con make conformance, que escribe docs/conformance.json y compone docs/CONFORMANCE.md a partir de él. Los valores esperados se toman de las mismas tablas de referencia que exige la batería de tests, de modo que el informe y los tests no pueden discrepar en silencio. Esta página lee el documento ya versionado y nunca lo genera, y la CI falla si ese documento se desincroniza de una ejecución nueva de las comprobaciones.

Para la filosofía de diseño detrás de este enfoque, junto con un caso de estudio sobre la ponderación temporal de IEC 61672-1, consulta Por qué phonometry.

Volver a deducir las normas con este detalle también saca a la luz defectos de los propios documentos publicados: ejemplos resueltos que contradicen su articulado, constantes mal impresas, referencias cruzadas rotas. Cada caso confirmado, con su evidencia y lo que hace la biblioteca al respecto, está en el registro de erratas.

Marcas de veredicto.CumplePor diseñoCada marca acompaña a la palabra que tiene al lado, nunca la sustituye, y las siluetas se distinguen tanto como los colores, así que quien no separe los tonos las sigue diferenciando.

Fracción de la tolerancia publicada que consume cada comprobación. El 100 % cae justo en el límite y un guion significa que el apartado no fija tolerancia de dos lados para esa magnitud, así que no hay margen que gastar. Un valor alto no es un fallo: es el margen con el que se cumple, y nunca decide el veredicto, que se resuelve a precisión completa antes de redondear.

Las diez comprobaciones más cerca de su límite publicado

NormaMagnitudDesviaciónLímiteConsumido
ISO/TR 17534-3:2015 Table 3Ground-projected path length dp, m0.005 m±0.005 m100 %
Long 2e Table 14.9 (worked duct-borne sheet, supply path)Fan to room, 8 octave bands -> 52/42/30/18/9/-2/-2/-1 dB at the receiver1 dB±1 dB100 %
IEC 60268-16 Annex MStep 2 printed intermediates: the measurement condition, row by row0.993±199 %
VDI 2081 Blatt 2:2005 Table 1, element 14Bend flow noise, worst octave deviation, dB0.0496 dB±0.05 dB99 %
IEC 60268-16 Annex MStep 3 printed intermediates: the operational condition, row by row0.987±199 %
VDI 2081 Blatt 2:2005 Table 1, element 20Sound pressure level in room 102, worst octave deviation, dB0.4913 dB±0.5 dB98 %
ISO 5136:2003 Table D.1C3,4 of the sampling tube for d = 0,5 m at U = +/-5, +/-15, +/-30 m/s, 27 bands0.049 dB±0.05 dB98 %
ISO 9053-2:2020 Annex A.3Thermal boundary-layer thickness b0.00000485 m±0.00001 m97 %
Long, Architectural Acoustics 2e, Table 8.1Room modes of a 7 x 5 x 3 m room: the six printed frequencies, Hz-0.126 Hz±0.13 Hz97 %
IEC 61094-2:2009 Table F.1Set B (20 C, 80 000 Pa, 65 % RH): rho, c0, kappa, eta and alpha_t, as a fraction of the rounding of the last printed figure0.96±196 %

IEC 61260-1:2014 class per filter architecture

ArquitecturaVeredictoBanda determinanteAten. rel. medidaLímite clase 1Margen cl.1Margen cl.2
butterClass 1100 Hz+0.00 dB≥ -0.40 dB+0.400 dB+0.600 dB
cheby1Por diseño (passband ripple)6310 Hz+0.19 dB≥ +1.44 dB-1.246 dB-0.837 dB
cheby2Class 1100 Hz+0.00 dB≥ -0.40 dB+0.400 dB+0.600 dB
ellipPor diseño (passband ripple)10000 Hz+0.10 dB≥ +1.32 dB-1.218 dB-0.813 dB
besselPor diseño (soft rolloff)100 Hz+12.46 dB≥ +16.60 dB-4.133 dB-3.133 dB

Frequency-weighting conformance

CurvafsDesv. máx. (informativa)Frec. determinanteDesviación allíBanda de toleranciaMargen
A48 kHz+0.050 dB @ 158 Hz1000 Hz+0.000 dB[-0.70, +0.70] dB+0.700 dB
A96 kHz+0.050 dB @ 158 Hz1000 Hz+0.000 dB[-0.70, +0.70] dB+0.700 dB
C48 kHz-0.049 dB @ 13 Hz1000 Hz+0.000 dB[-0.70, +0.70] dB+0.700 dB
G48 kHz+0.047 dB @ 1 Hz1 Hz+0.047 dB[-1.00, +1.00] dB+0.953 dB
Filters & weightings12/12
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 61260-12014Table 1Octave-band filter class (butterworth, fs=48 kHz)class 1class 1 (margin +0.400 dB)-+0.400 dB-
CumpleIEC 61260-12014Table 1One-third-octave filter class (butterworth, fs=48 kHz)class 1class 1 (margin +0.400 dB)-+0.400 dB-
CumpleIEC 612601995/ ANSI S1.11-2004 Table 1Class 0 (strictest) octave-band filter (butterworth, fs=48 kHz)class 0class 0 (margin +0.150 dB)-+0.150 dB-
CumpleIEC 6511979Table V (via BS 5969:1981)Type 0 (strictest) A-weighting tolerance mask (fs=48 kHz)Type 0Type 0 (margin +0.650 dB)-+0.650 dB-
CumpleIEC 6511979Table V (via BS 5969:1981)Type 0 (strictest) C-weighting tolerance mask (fs=48 kHz)Type 0Type 0 (margin +0.667 dB)-+0.667 dB-
CumpleIEC 61260-12014Table F.1Formula (9) breakpoint mapping, b=3, Omega at G**(1/2)1.122021.12202±0.00001-0.0000015531 %
CumpleIEC 61672-12013Table 3A-weighting deviation vs class-1 limits (fs=48 kHz)deviation within limits @ 1000 Hz+0.000 dB in [-0.70, +0.70] dB-headroom +0.700 dB-
CumpleIEC 61672-12013Table 3C-weighting deviation vs class-1 limits (fs=48 kHz)deviation within limits @ 1000 Hz+0.000 dB in [-0.70, +0.70] dB-headroom +0.700 dB-
CumpleISO 71961995Table 2 / A.3G-weighting deviation vs +/-1 dB tolerance (fs=48 kHz)deviation within limits @ 1 Hz+0.047 dB in [-1.00, +1.00] dB-headroom +0.953 dB-
CumpleANSI S1.41983Tables IV/VB-weighting (historical) deviation vs Type 0 limits (fs=48 kHz)deviation within limits @ 200 Hz-0.049 dB in [-0.70, +0.70] dB-headroom +0.651 dB-
CumpleIEC 610121990Table 1 / 2.2AU-weighting deviation vs separate-unit tolerances (fs=96 kHz)deviation within limits @ 158 Hz+0.051 dB in [-1.00, +1.00] dB-headroom +0.949 dB-
CumpleIEC 5371976(withdrawn) via NASA CR-3406 Table SLD-ID-weighting response vs the published tabulated curve (fs=48 kHz)abs(response - table) <= 0.2 dB (0.45 dB at 1600/2500 Hz)-0.281 dB @ 2500 Hz (bound 0.45 dB)-headroom +0.169 dB-
Humid air (IEC 61094-2:2009 Annex F)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 61094-22009Table F.1Set A (23 C, 101 325 Pa, 50 % RH): rho, c0, kappa, eta and alpha_t, as a fraction of the rounding of the last printed figure00.549±10.54955 %
CumpleIEC 61094-22009Table F.1Set B (20 C, 80 000 Pa, 65 % RH): rho, c0, kappa, eta and alpha_t, as a fraction of the rounding of the last printed figure00.96±10.9696 %
CumpleIEC 61094-22009Formula (F.5)Thermal conductivity and specific heat capacity close the printed thermal diffusivity, alpha_t = k_a / (rho C_P)0.000021153 m²/s0.000021153 m²/s±1e-10%0 m²/s0.0 %
Sea water (Ainslie 2010)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleAinslie(2010)Eq. (4.6), printed folio 127Density of the standard ocean: 10 C, salinity 35, at the surface1027 kg/m³1027.0439 kg/m³±0.5 kg/m³0.0439 kg/m³8.8 %
CumpleAinslie(2010)Eq. (4.11), printed folio 128Absolute static pressure at the surface is one atmosphere, not zero101989.16 Pa101989.16 Pa±0.00000100 Pa0 Pa0.0 %
CumpleAinslie(2010)Eq. (4.6) vs printed folio 177The pressure term the book's own folio 177 drops: 4,3e-7 per pascal times one atmosphere0.0438549 kg/m³0.0438549 kg/m³±1.00e-12 kg/m³8.55e-14 kg/m³8.6 %
Levels & dosimetry9/9
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 61672-12013(Leq)Leq of a 1 Pa 1 kHz sine90.97 dB90.969 dB±0.05 dB-0.001 dB2.0 %
CumpleIEC 612521993(LEX,8h)8 h exposure to 90 dB(A) noise90 dB89.999 dB±0.05 dB-0.001 dB2.0 %
CumpleISO 1996-120163.6.4Lden, constant 60 dB in day/evening/night66.3952 dB66.3952 dB±0.00000100 dB0 dB0.0 %
CumpleISO 1996-22007Annex C.5 Example 1Tonal audibility ΔLta (Formula C.3), 4 kHz tone13.7 dB13.66 dB±0.05 dB-0.044 dB88 %
CumpleISO 1996-22007Annex C.5 Example 1Tonal adjustment Kt (Formulae C.4-C.6)6 dB6 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 1996-22017Annex G.2Combined measurement uncertainty u = √(Σ(cj·uj)²)2.18 dB2.18 dB±0.01 dB-0.002 dB20 %
CumpleRD 1367/2007Annex IV A.3.4.2 bCorrected period level LKeq,d (Manual Ejemplo 3.1: 3 noise phases, 12 h)57 dB57 dB±1.00e-9 dB0 dB0.0 %
CumpleRD 1367/2007Annex I A.2 dLong-term level LK,d (Manual Ejemplo 3.2: 303 operating days of 365)56 dB56 dB±1.00e-9 dB0 dB0.0 %
CumpleRD 1367/2007Annex III Table B1, Article 25Activity verdict (Manual Ejemplo 3.3: area type a, LK,d 56 dB over 55 dB)phase and daily pass, annual fails, activity not compliantphase and daily pass, annual fails, activity not compliant---
Room & building acoustics84/84
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleCTE DB-HRAnnex A, Formula (A.5)Global index R'A for pink noise (Manual Ejemplo 7.2)51.4 dBA51.4 dBA±0.05 dBA0 dBA0.0 %
CumpleCTE DB-HRAnnex A, Formula (A.6)Global index D2m,nT,Atr for road traffic (Manual Ejercicio 7.1)32.8 dBA32.8 dBA±0.05 dBA0 dBA0.0 %
CumpleManual de acustica ambiental y arquitectonica,Ejemplo 7.1Reported R'A of the field-test wall (printed 51 dBA = R'w 52 + C -1)51 dBA51 dBA±1.00e-9 dBA0 dBA0.0 %
CumpleManual de acustica ambiental y arquitectonica,Ejemplo 7.1Reported R'A,tr of the same wall (printed 47 dBA = R'w 52 + Ctr -5)47 dBA47 dBA±1.00e-9 dBA0 dBA0.0 %
CumpleCTE Catalogode Elementos ConstructivosWindow size correction of RA (Manual Ejemplo 7.4: 4 m2 window, -2 dB)24 dBA24 dBA±1.00e-9 dBA0 dBA0.0 %
CumpleISO 3382-220085.3.3T30 from a synthetic exponential decay (T=1.0 s)1 s1 s±1%-4.65e-11 s0.0 %
CumpleISO 182332006(swept-sine method)Sweep deconvolution recovers a known IIR response0 dB in-band error (+/-0.1 dB)0.0006 dB±0.1 dB0.0006 dB0.6 %
CumpleISO 717-1Annex C, Table C.1Weighted sound reduction index Rw (C;Ctr)Rw 30 (C -2; Ctr -3)Rw 30 (C -2; Ctr -3), unfavourable sum 31.8 dB±000.0 %
CumpleISO 717-12020Annex C, Table C.2Enlarged range 50-5000 Hz: Rw (C; Ctr; C50-5000; Ctr,50-5000)Rw 30 (C -2; Ctr -3; C50-5000 -2; Ctr,50-5000 -4)Rw 30 (C -2; Ctr -3; C50-5000 -2; Ctr,50-5000 -4)-exact-
CumpleISO 717-2Annex C, Table C.1Weighted impact sound pressure level Ln,w (CI)Ln,w 79 (CI -11; sum 28.0 dB)Ln,w 79 (CI -11; sum 28.0 dB)-+0 dB-
CumpleISO 717-2Annex C, Table C.1 (covered)Weighted impact level of the floor WITH covering Ln,w (CI)Ln,w 64 (CI -3; sum 30.0 dB)Ln,w 64 (CI -3; sum 30.0 dB)-+0 dB-
CumpleISO 717-2Annex C, Table C.2Floor-covering improvement ΔLw and CI,Δ (Formulae (2)/(A.4); CI,Δ from the normative Table 4 floor, not the 2020 print's misprinted C.2 chain)ΔLw 15 dB; CI,Δ -9 dB (Table 4 reference floor)ΔLw 15 dB; CI,Δ -9 dB-+0 dB-
CumpleISO 3542003Eq. 5/8Sabine inversion recovers absorption area9.212828 m²9.212828 m²±1.00e-9 m²0 m²0.0 %
CumpleISO 3382-32012Clause 6.2Open-plan spatial decay rate D2,S (-6 dB/doubling)6 dB6 dB±1.00e-9 dB-7.11e-15 dB0.0 %
CumpleISO 16283-32016Clause 3.12Facade R'45 isolates the -1.5 dB incidence correction (S=A)38.5 dB38.5 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 16283-12014Clause 8.1 / -2:2020 Clause 8.1 / -3:2016 Clause 7.3.1Low-frequency trigger: V < 25 m³ to the nearest cubic metre7/7 room volumes on either side of 25 m³7/7 room volumes on either side of 25 m³±000.0 %
CumpleISO 16283-12014Clause 5 / -2:2020 Clause 5.1 / -3:2016 Clause 5Low-frequency band set is 50 Hz, 63 Hz and 80 Hzband 1 = 50 Hz; band 2 = 63 Hz; band 3 = 80 Hzband 1 = 50 Hz; band 2 = 63 Hz; band 3 = 80 Hz±0 Hz0 Hz0.0 %
CumpleISO 16283-12014Formula (12) / -2:2020 Formula (15)Corner level is the highest corner per band, energy-averaged over qFormula (12) over q = 2 positions (closed form)max deviation 0.000000000 dB±0.000000001 dB1.42e-14 dB0.0 %
CumpleISO 16283-12014Formula (13) / -2:2020 (16) / -3:2016 (5)L_LF combines the corner and default levels one third to two thirdsthe printed Formula (13) (closed form)max deviation 0.000000000 dB±0.000000001 dB0 dB0.0 %
CumpleISO 16283-12014Formula (13) / -2:2020 (16) / -3:2016 (5)L_LF degenerates to L when the corner level equals itL_LF = L for L_Corner = L (closed form)max deviation 0.000000000000 dB±0.000000000001 dB0 dB0.0 %
CumpleISO 16283-12014Formula (13) / -2:2020 (16) / -3:2016 (5)L_LF floor at 10 lg(2/3) below L as the corners fall silent48.239087 dB (+/-1e-09 dB, closed form)48.239087 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 16283-12014Formula (13) / -2:2020 (16) / -3:2016 (5)L_LF rises strictly with the corner level, over 80 dB of it400/400 steps rising with the corner level (closed form)400/400 steps rising with the corner level±000.0 %
CumpleISO 16283-12014Clause 10.4 / -2:2020 Clause 10.4 / -3:2016 Clause 8.463 Hz octave T replaces exactly the 50 Hz, 63 Hz and 80 Hz bands5/5 reverberation-time bands5/5 reverberation-time bands±000.0 %
CumpleISO 16283-12014(13) / -2:2020 (16) / -3:2016 (5)Airborne, impact and facade run one low-frequency implementation3/3 parts reaching the same L_LF3/3 parts reaching the same L_LF±000.0 %
CumpleISO 10140-22010Formula (2)Lab airborne R on the ISO 717-1 reference shape -> Rw = 54Rw 54 dBRw 54 dB-+0 dB-
CumpleISO10140-5:2010+A1 Annex B, Table B.1Reference elements end-to-end: printed Rw (C; Ctr) of all threeRw(C;Ctr) = 53(-1;-5) / 52(-1;-5) / 33(-1;-2)53(-1;-5) / 52(-1;-5) / 33(-1;-2)-exact-
CumpleISO10140-5:2010+A1 Annex C, Table C.1Reference floors end-to-end: printed Ln,t,r,0,w (CI) of bothLn,t,r,0,w(CI) = 72(0) / 75(-3)72(0) / 75(-3)-exact-
CumpleISO 15186-12000Formula (7)Intensity RI on the ISO 717-1 reference shape -> RI,w = 30RI,w 30 dB (scalar anchor RI = 34 dB)RI,w 30 dB (RI = 34 dB)-+0 dB-
CumpleISO 15186-12000Annex B, Table B.1Adaptation term Kc: all 21 printed rows; (B.1) reduces to (B.2)max abs(Kc - Table B.1) <= 0,05 dB (1 dp print)0.047 dB (B.1 vs B.2: 4.33e-04 dB)-0.047 dB-
CumpleISO 15186-32002Annex A, Table A.1Limp-panel qualification: the printed plaster-board columnmax abs(R - Table A.1) <= 0,05 dB (1 dp print)0.050 dB over 50 Hz to 160 Hz-0.050 dB-
CumpleISO 15186-32002Formula (7)Low-frequency RI subtracts 9 dB, three more than part 1RI = 15 dB, 3 dB below part 1; FpI = 8 dB qualifies at 10 not 6RI = 15 dB, part 1 - part 3 = 3 dB-+0.000 dB-
CumpleISO 15186-32002Clause 3.9, Formula (8)Low-frequency DI,n,e; the series' own +10 lg N signDI,n,e = 21 dB; N = 4 adds 6.021 dB21 dB; N = 4 adds 6.021 dB-+8.882e-16 dB-
CumpleISO 100522021Clause 3.6Survey R' applies the V/7,5 minimum-area rule26.197888 dB26.197888 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 100522021Clause 3.16Service-equipment LXY is the 3-position energy average32.823329 dB32.823329 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 100522021Table 4Reverberation-index estimate (35 <= V < 60, type g)k = [4.5, 5.0, 5.5, 5.5, 5.5] dBk = [4.5, 5.0, 5.5, 5.5, 5.5] dB-exact-
CumpleISO 717-22020Table 4 / Clause 5.2Reference-floor weighted level Ln,r,0,w and CI (ISO 16251-1 ΔLw anchor)Ln,r,0,w = 78 dB, CI = -11 dBLn,r,0,w = 78 dB, CI = -11 dB-exact-
CumpleISO 16251-12014/ ISO 717-2 Formula (2)Floor-covering ΔLw: zero improvement gives ΔLw = 0ΔLw = 0 dB (ΔL = 0 -> Ln,r = Ln,r,0)ΔLw = 0 dB-exact-
CumpleISO 16251-1/ ISO 717-2 (Foret et al. 2011, carpet)Measured textile-carpet improvement rates to ΔLw = 29 dBΔLw = 29 dB (paper, ISO 16251-1)ΔLw = 29 dB-+0 dB-
CumpleISO 10848-12006Formula (14)Flanking Kij (simplified) matches closed formKij = 1.9897 dBKij = 1.9897 dB-exact-
CumpleISO 10848-12006Formula (12)Flanking equivalent absorption length aj at f_refaj = 1.2661 maj = 1.2661 m-exact-
CumpleISO 10848-12006Clause 7.3.1Flanking total loss factor η = 2,2/(f·Ts)η = 0.0044η = 0.0044-exact-
CumpleISO 12354-12017Formula (20) vs Hopkins Eq. 2.201 (6 mm glass)Flanking critical frequency (c0²/1,8·cL·h) vs plate coincidence (c0²/2π · sqrt(m''/B'))2107.4 Hz2123.5 Hz±1%16.156 Hz77 %
CumpleEN 29052-11992Formula 4Apparent dynamic stiffness s't = 4π²·m't·fr² (m't=200 kg/m², fr=25 Hz)4.934802 MN/m³4.934802 MN/m³±0.000001 MN/m³0 MN/m³0.0 %
CumpleEN 29052-11992clause 8.2 NOTEEnclosed-gas stiffness s'a·d = 111 MN·mm/m³ (p₀=0,1 MPa, ε=0,9)5.55556 MN/m³5.55556 MN/m³±0.0001 MN/m³5.56e-9 MN/m³0.0 %
CumpleEN 29052-11992Formula 2Floating-floor natural frequency f0 = (1/2π)√(s'/m') (s'=10 MN/m³, m'=100 kg/m²)50.32921 Hz50.32921 Hz±0.00000100 Hz0 Hz0.0 %
CumpleISO 7626-12011Table 1 / 3.1.2Closed-form SDOF driving-point mobility peak mag(Y(f0)) = 1/c (c=5 N·s/m)0.2 m/(N·s)0.2 m/(N·s)±0.000001 m/(N·s)2.78e-17 m/(N·s)0.0 %
CumpleISO 7626-12011Table 1 / 3.1.2Closed-form SDOF static receptance H(0) = 1/k (k=8000 N/m)0.000125 m/N0.000125 m/N±0.0001%1.25e-18 m/N0.0 %
CumpleISO 7626-12011Table 1FRF reciprocity: impedance × mobility = 1 (at 37 Hz)1 (= Z·Y)1±1.00e-92.22e-160.0 %
CumpleISO 717-22020Table D.4A-weighted maximum impact level LiA,Fmax of the Annex D worked example55,350 66... dB (rated 55 dB)55.350668 dB±0.0001 dB0.000001 dB1.0 %
CumpleISO 16283-22020Table A.1 / JIS A 1418-2:2019 Table A.2Rubber-ball impact force exposure level LFE, five octave bands39,0 / 31,0 / 23,0 / 17,0 / 12,5 dB re 1 N at 31,5 to 500 Hz39 / 31 / 23 / 17 / 12,5 dB re 1 N-max |dev| 0.000 dB-
CumpleISO 16283-22020Formulae (4), (5), (6)Standardized maximum impact level reduces to 10 lg(V/V0) at T = T073,0103 dB (= 70 + 10 lg(100/50))73.0103 dB±1.00e-9 dB0 dB0.0 %
CumpleASTM E413-22clause 5 (ASTM E1414 CAC)Ceiling attenuation class of two accredited E1414 test reportsCAC 34 (ALA 16-091-4); CAC 25, sum 24 dB (Intertek J7488.04)CAC 34; CAC 25, sum 24.0 dB-exact-
CumpleISO 140-91985clause 3.3Normalized ceiling attenuation Dn,c = D - 10 lg(A/A0), A0 = 10 m243.0103 dB43.0103 dB±1.00e-9 dB0 dB0.0 %
CumpleVigran(2008)Eqs. (9.18)-(9.20)Plenum model: Eq. (9.18) converges to Eq. (9.20) as the damping vanishesEq. (9.20) value, reproduced by Eq. (9.18)139.5682 dB±0.001 dB0.0004 dB40 %
CumpleHopkins(2007)Eq. 4.89 / Fig. 4.35Mass-spring-mass resonance of a masonry cavity wall without and with ties26 Hz (no ties) / 50 Hz (2,5 ties/m2, k = 2 MN/m)26.15 Hz / 49.93 Hz-+0.15 / -0.07 Hz-
CumpleHopkins(2007)Table A4Dynamic stiffness of four wall ties (butterfly, double-triangle, twist)1,7 / 16,1 / 94,0 MN/m at 50 mm; 43,4 MN/m at 100 mm1.7 / 16.1 / 94 / 43.4 MN/m-exact-
CumpleISO 10846-220083.17Transfer-stiffness level Lk = 20 lg(|k|/k0), k0 = 1 N/m (|k| = 1 MN/m)120 dB120 dB±0.00000100 dB0 dB0.0 %
CumpleISO 10846-32002Formula (1)Indirect method k2,1 = -(2πf)²·m2·T (f=500 Hz, m2=10 kg, T=0,01)-986960.4 N/m-986960.4 N/m±0.1%0 N/m0.0 %
CumpleISO 10846-12008Table A.2FRF relation k = jω·Z at 250 Hz (|k| recovered from impedance)1001249.2 N/m1001249.2 N/m±0.0001%0 N/m0.0 %
CumpleISO 7626-220157.5.2Rigid-mass calibration: accelerance mag(A) = 1/m (m=10 kg)0.1 1/kg0.1 1/kg±1.00e-9 1/kg0 1/kg0.0 %
CumpleISO 7626-220157.5.2Rigid-mass calibration: mobility mag(Y) = 1/(2πf·m) at 100 Hz (m=10 kg)0.0001592 m/(N·s)0.0001592 m/(N·s)±0.001%-5.69e-11 m/(N·s)3.6 %
CumpleISO 7626-22015Annex ANormalized random error ε = √((1−γ²)/(2nγ²)): γ²=0,8, n=75 → 4,08 % (< 5 %)4.08 %4.08 %±0.01 %0.002 %40 %
CumpleISO 7626-12011Table 1Rigid 1 kg mass at ω = 1000 rad/s: mobility 1e-3, compliance 1e-6 (decades)0.001 m/(N·s)0.001 m/(N·s)±1e-7%0 m/(N·s)0.0 %
CumpleISO 10846-320026.1 Inequality (2)Indirect-method validity limit mag(T) = 0,1 ↔ ΔL1,2 = 20 dB20 dB20 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 10846-320026.1Model bias at the validity limit: k_ind/k = 1,1 (0,83 dB ≤ 1 dB, 10 % ≤ 12 %)1.11.1±1e-7%00.0 %
CumpleISO 10846-12008Equation (6)Delivered/blocking force F2/F2,b = 1/1,1 at mag(k2,2/kt) = 0,1 (within 10 %)0.90910.9091±1.00e-900.0 %
CumpleISO 10846-22008/ -3:2002 7.6Linearity: ΔLk ≤ 1,5 dB for input spectra 10 dB apart (linear element: 0)ΔLk ≤ 1,5 dB (7.6 c)0 dB±1.5 dB0 dB0.0 %
CumpleISO/TS 7849-12009Formula (8)Calibration L_v from â = 9,81 m/s² at 100 Hz (standard's EXAMPLE)106.9 dB106.9 dB±0.1 dB-0.02 dB40 %
CumpleISO/TS 7849-22009Formula (15)L_W from L_v via measured radiation factor = 10 lg(P/P0) (round-trip)84.771 dB84.771 dB±0.00000100 dB0 dB0.0 %
CumpleISO/TS 7849-12009Formula (12)Impedance term: L_W − L_v = 10 lg(411/400) at ε = 1, S = S00.1178 dB0.1178 dB±1.00e-9 dB-2.50e-15 dB0.0 %
CumpleEN 156572018Formula (14)Reception-plate L_Ws = resonant-plate power P = ωη(mS)⟨v²⟩ (round-trip)55.545 dB55.545 dB±0.00000100 dB-7.11e-15 dB0.0 %
CumpleEN 156572018Formula (13)Plate loss factor η = 2,2/(f·Ts) at 1 kHz, Ts = 0,3 s0.00730.0073±1.00e-900.0 %
CumpleEN 156572018Formulae (15)/(17) + EN 12354-5 Annex I.3Source conversion chain reproduces Table I.8 (wall, installed)max abs(L_Ws,inst - Table I.8) <= 0,15 dB0.055 dB±0.15 dB0.055 dB37 %
CumpleISO 96111996eq. (9)Mean free velocity level (energy mean, v0 = 5e-8 m/s)72.3017 dB72.3017 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 12354-12017Annex L, Tables L.2 to L.4In-situ element chain: 10 lg sigma, 10 lg sigma_f, eta_tot, Rsitu, a_situ (21 bands x 5 elements)0 dB0.057 dB±0.1 dB0.057 dB57 %
CumpleISO 12354-12017Annex L, Table L.1Detailed airborne model: 13 paths + R' per band, R'w = 57 dBmax path/total dev <= 0,1 dB; R'w = 57 dB0.055 dB; 57 dB-0.055 dB-
CumpleISO 12354-22017Annex G, Tables G.3, G.4 and G.1Detailed impact model: Ln,situ, Ln,Dd, Ln,Df, L'n per band, L'n,w = 41 dBmax path/total dev <= 0,1 dB; L'n,w (CI) = 41 (2) dB0.077 dB; 41 (2) dB-0.077 dB-
CumpleHopkins(2007)3.6.3.1 / 4.4.3.1, printed pp. 276-282 and 513-514Tapping machine: vo, cut-off frequencies fco of a bare slab and two soft coverings (7 000 / 2 300 / 100 Hz)00.0077±0.020.007739 %
CumpleHopkins(2007)Figs. 3.30/3.31 and 4.73, printed pp. 281 and 524Over/under-critical case of four walking surfaces; double floating-floor resonances 74 Hz and 195 Hz4/4 critical cases; fmsms = 74 / 195 Hz (+/-2%)4/4; 74.1 / 194.0 Hz-0.53%-
CumpleISO 12354-22017Annex C / Annex G Table G.4Floating floor: fo = 160 sqrt(s'/m') = 52,8 Hz, DeltaL = 30 lg(f/fo) over 21 bands, DeltaLw = 32,2 dB0 dB0.048 dB±0.05 dB0.048 dB96 %
CumpleISO 12354-12017Annex D / Hopkins (2007) Fig. 4.48, printed p. 486Lining resonance (Formula D.1) 542 Hz and the Table D.1 improvement branchesfo = 542 Hz (+/-1%); 8/8 Table D.1 rows541.9 Hz; 8/8-0.02%-
CumpleEN 12354-52009Formula (19b/19c)Coupling term → force-source limit 10 lg(mag(Ys)/Re{Yi}) as mag(Ys) ≫ mag(Yi)40 dB40.001 dB±0.01 dB0.001 dB10 %
CumpleEN 12354-52009Annex I.3, Table I.9Flushing cistern: four paths + Formula (17) total -> 29 dB(A)max path/total dev <= 0.15 dB; total 29 dB(A)0.055 dB; 29.3 dB(A)-0.055 dB-
CumpleEN 12354-52009Annex I.2, Table I.6aWhirlpool floor component: mobility correction + path 11max abs(dev vs Table I.6a) <= 0,15 dB0.1 dB±0.15 dB0.1 dB67 %
Room acoustics16/16
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleSabine (W. C. Sabine, 1922)Reverberation time T = k·V/A (V=120 m³, S=158 m², α=0.2)0.611825 s0.611825 s±0.000001 s4.25e-11 s0.0 %
CumpleLong, Architectural Acoustics2eTable 8.1Room modes of a 7 x 5 x 3 m room: the six printed frequencies, Hz42.4 Hz42.27 Hz±0.13 Hz-0.126 Hz97 %
CumpleLong, Architectural Acoustics2eEq. (8.46)Modal density of a 7 x 5 x 3 m room at 1 kHz = 34 modes/Hz34 modes/Hz34.32 modes/Hz±0.5 modes/Hz0.32 modes/Hz64 %
CumpleLong, Architectural Acoustics2eEq. (17.51)Restaurant self-noise, 20 talkers over 20 metric sabins = 76 dB76 dB76.021 dB±0.05 dB0.021 dB42 %
CumpleLong, Architectural Acoustics2eEq. (17.54)Privacy bound A_tab < 3.16 rt^2 (Q = 2, L_SN = -9 dB)3.16 m²3.164 m²±0.005 m²0.004 m²80 %
CumpleEverest, Master Handbook of Acoustics4th edFig. 7-22Sabine RT, worked Example 1 @ 1 kHz (untreated 23.3×16×10 ft room, SI)3.39 s3.402 s±0.02 s0.012 s60 %
CumpleEyring (Norris-Eyring, 1930)Reverberation time T = k·V/(-S·ln(1-ᾱ)) (α=0.2)0.548369 s0.548369 s±0.000001 s-4.34e-11 s0.0 %
CumpleArau-Puchades (Acustica 65, 1988,Formula 18)T (α=0.5/0.1/0.1 per wall pair, dims 8×5×3 m)0.812147 s0.812147 s±0.000001 s4.47e-11 s0.0 %
CumpleModel identity (uniform absorption)Arau-Puchades ≡ Eyring when ᾱ is uniform0.548369 s (= Eyring)0.548369 s±1.00e-9 s0 s0.0 %
CumpleVorlander Auralization2eEq. (11.38)-(11.39)Image-source direct-sound amplitude 1/(4πr) and delay r/c (r = 4 m)0.01989440.0198944±1.00e-900.0 %
CumpleKuttruff Room Acoustics6eEq. (9.23)Audible shoebox image count up to order 10 (= 1560)15601560±000.0 %
CumpleKuttruff Room Acoustics6eEq. (4.6)Temporal reflection density dN/dt = 4πc³t²/V (t = 0.1 s, V = 120 m³)42258.2 1/s42258.2 1/s±0.00000100 1/s0 1/s0.0 %
CumpleBies Engineering Noise Control5eEq. (6.44)Room constant R = Sᾱ/(1-ᾱ) (S = 100 m², ᾱ = 0.2 → 25 m²)25 m²25 m²±1.00e-9 m²0 m²0.0 %
CumpleBies Engineering Noise Control5eEq. (6.43)Critical distance rc: direct field = reverberant field (R = 25, Q = 1)0.160000 (= reverberant term)0.16±1.00e-92.78e-170.0 %
CumpleKuttruff Room Acoustics6eEq. (3.44)Schroeder frequency f_s = 2000√(T/V) (V = 200 m³, T = 1 s)141.421 Hz141.421 Hz±0.00000100 Hz0 Hz0.0 %
CumpleBies Engineering Noise Control5eEq. (6.43)Steady-state SPL Lp = Lw + 10lg(Q/4πr² + 4/R) (Lw=90, r=1, R=25, Q=1)83.7945 dB83.7945 dB±0.00000100 dB0 dB0.0 %
Psychoacoustics14/14
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleMoore, Psychology of Hearing6ep. 77 (Glasberg & Moore 1990)ERB_N number of 1000 Hz = 15.59 Cam15.59 Cam15.5932 Cam±0.005 Cam0.0032 Cam64 %
CumpleMoore, Psychology of Hearing6ep. 76 (Glasberg & Moore 1990)ERB_N at 1 kHz vs the printed 24.7(4.37F + 1), Hz132.639 Hz132.445 Hz±0.3%-0.194 Hz49 %
CumpleISO 532-12017Annex B.2Zwicker loudness N, stationary test signal 183.2957 sone (+/-0.1%)83.2957 sone-0 sone-
CumpleISO 532-12017Annex B.5Time-varying loudness Nmax, technical signal 14 (aircraft, free field)22.6399 sone22.6399 sone±0.1%0.00000792 sone0.0 %
CumpleISO 532-12017Annex B.5Time-varying loudness Nmax, technical signal 15 (vehicle interior, diffuse field)9.6059 sone9.6059 sone±0.1%-0.0000308 sone0.3 %
CumpleDIN 456922009Clause 6Sharpness of the standard 1 kHz reference signal1 acum1 acum±1.00e-9 acum0 acum0.0 %
CumpleDIN 456922009Table A.2Sharpness of critical-band noise at 2.5 kHz (2320-2700 Hz, 4 sone)1.78 acum1.747 acum±0.089 acum-0.033 acum37 %
CumpleISO 2262023Table B.1Equal-loudness contour, 60 phon @ 100 Hz78.5 dB SPL78.504 dB SPL±0.05 dB SPL0.004 dB SPL8.0 %
CumpleECMA-418-22025Clause 5.1.8HMS loudness of a 1 kHz / 40 dB tone (c_N=0.0211964)1 sone_HMS0.9843 sone_HMS±0.03 sone_HMS-0.0157 sone_HMS52 %
CumpleECMA-418-22025Clause 6.2.8HMS tonality of a 1 kHz / 40 dB tone (c_T=2.8758615)1 tu_HMS0.9998 tu_HMS±0.03 tu_HMS-0.0002 tu_HMS0.7 %
CumpleECMA-418-22025Clause 7HMS roughness of a 1 kHz / 70 Hz / m=1 / overall 60 dB tone (c_R=0.0180685)1 asper0.9999 asper±0.01 asper-0.0001 asper1.0 %
CumpleISO 532-22017Clause 3.17 / Annex B.1Moore-Glasberg loudness of a 1 kHz / 40 dB tone (C=0.0617)1 sone1.0001 sone±0.01 sone0.0001 sone1.0 %
CumpleISO 532-32023Annex C.1Moore-Glasberg-Schlittenlacher peak LTL, steady 1 kHz / 40 dB1 sone0.9996 sone±0.02 sone-0.0004 sone2.0 %
CumpleECMA-418-22025Clause 9HMS fluctuation strength of a 1 kHz / 4 Hz / m=1 / overall 60 dB tone (c_F=0.003840572)1 vacil_HMS0.9931 vacil_HMS±0.01 vacil_HMS-0.0069 vacil_HMS69 %
Speech transmission (IEC 60268-16)14/14
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 60268-162020A.2.2STI weighting-factor pair (500 Hz + 1 kHz bands)0.3980.398±0.00100.0 %
CumpleIEC 60268-162020A.3.1.2Uniform MTF m=0.5 maps to STI=0.50.50.5±0.0100.0 %
CumpleIEC 60268-16Annex MFull-STI worked example: printed MTF + speech/noise spectra -> STISTI 0.76 (MTI row of step 4c)STI 0.758 (max MTI dev 0.00)--0.002-
CumpleIEC 60268-16Annex MOccupancy-noise adjustment: measured MTF and four level spectra -> STISTI 0.76 (step 3 matrix, step 4 STI)STI 0.758 (max MTF dev 0.0009)--0.002-
CumpleIEC 60268-16Annex MStep 2 printed intermediates: the measurement condition, row by rowevery printed row of step 2 rounds as tabulatedworst row: amf in dB, 0.99 of its last printed place±10.99399 %
CumpleIEC 60268-16Annex MStep 3 printed intermediates: the operational condition, row by rowevery printed row of step 3 rounds as tabulatedworst row: amf in dB, 0.99 of its last printed place±10.98799 %
CumpleIEC 60268-16Annex MStep 4a printed intermediates: 98 effective signal-to-noise ratiosall 98 printed effective SNRsworst cell 0.074 dB from its printed value±0.08 dB0.074 dB93 %
CumpleIEC 60268-162020C.3.2STIPA direct method, Formula (C.1) signal at m=0.20.30.2992±0.01-0.00088.0 %
CumpleIEC 60268-162020C.3.2STIPA direct method, Formula (C.1) signal at m=0.50.50.4998±0.01-0.00022.0 %
CumpleIEC 60268-162020C.3.2STIPA direct method, Formula (C.1) signal at m=0.80.70.7002±0.010.00022.0 %
CumpleIEC 60268-162020C.3.3Indirect method: exponential decay RT60=1 s vs Schroeder MTF0.58850.5885±0.0050.00002660.5 %
CumpleIEC 60268-162020C.4.2Filter-bank slope: +41 dB unmodulated tone one octave below 125 Hzm >= 0.5 (C.4.2 pass criterion)0.9812[0.5, +∞]0.981-
CumpleIEC 60268-162020A.2.2 (audio path)Weighting factors: modulated 500 Hz + 1 kHz pair through stipa()0.3980.398±0.00500.0 %
CumpleIEC 60268-162020A.3.1.2 (audio path)Filter-bank phase: half-octave edge carriers at TI=0.90.90.8975±0.01-0.002525 %
System measurement (Golay / Kirkeby / Mueller-Massarani)5/5
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleHavelock2008Part I Ch. 6 (Xiang), Eq. (2)Golay pair: sum of periodic autocorrelations = 2L*delta (L = 4096)0 (algebraic identity, +/-1e-10)4.55e-13±1.00e-104.55e-130.5 %
CumpleHavelock2008Part I Ch. 6 (Xiang), Eq. (4)Golay chain recovers a delay+gain system IR (noiseless, exact)0 (machine precision, +/-1e-13)1.11e-16±1.00e-131.11e-160.1 %
CumpleKirkeby & Nelson1999Eq. (17) / Mueller-Massarani 2001 Sec. 3.1In-band equalization residue equals eps/(|H|^2 + eps) bin by bin0 (closed form, +/-1e-12)4.36e-16±1.00e-124.36e-160.0 %
CumpleKirkeby & Nelson1999(max of x/(x^2+eps) = 1/(2*sqrt(eps)))Out-of-band inverse-filter gain within the regularization cap<= -6.021 dB (analytic cap)-6.034 dB-headroom +0.013 dB-
CumpleMueller-Massarani2001Secs. 4.2-4.3 (group-delay synthesis)Shaped sweep's Welch spectrum follows the pink target, in-band0 dB in-band deviation (+/-0.5 dB)0.0652 dB±0.5 dB0.0652 dB13 %
Intensity & sound power37/37
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 610431993Clause 5Plane-wave intensity I = p^2 / (rho c)0.00238 W/m²0.00239 W/m²±1.5%0.00001 W/m²28 %
CumpleISO 37442010Eq. 18Monopole hemisphere recovers LW (r=4 m)95 dB95 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 9614-21996Eq. 12Intensity scan recovers LW of an enclosed source90 dB90 dB±0.000001 dB0 dB0.0 %
CumpleIEC 610431993Table 2Minimum delta_pI0 per band, probe/processor/instrument, class 1/2132 tabulated minima reproducedmax absolute deviation 0.000 dB±0 dB0 dB0.0 %
CumpleIEC 610431993Table 2 Note 1Separation rule +10 lg(x/25) on all six columns of 25 mm minima (x = 50 mm)3.0103 dB3.0103 dB±1.00e-12 dB4.44e-16 dB0.0 %
CumpleFahy, Sound Intensity2e6.8delta_pI0 = 20 dB is a phase mismatch of 0.26 deg (1 kHz, 25 mm)0.26 deg0.2624 deg±0.005 deg0.0024 deg48 %
CumpleISO 9614-11993Eqs (A.1)/(A.2)Temporal variability F1 is the coefficient of variation of M samples0.1851640.185164±1.00e-1200.0 %
CumpleISO 48711996clause 3.15 / Annex BDeclared L_WAd = L_WA + K_WA (Annex B, L_WA=88, K_WA=2)90 dB90 dB±0 dB0 dB0.0 %
CumpleISO 48711996clause 6.2Single-machine verification boundary L_1 <= L_WAdL_1=90 verified, L_1=91 rejected (L_WAd=90)90->True, 91->False-boundary L_1 = L_WAd-
CumpleISO 37412010Eq. 20Reverberation-room method inverts to a known LW0 dB error0 dB±0.000000001 dB0 dB0.0 %
CumpleISO 37442010Eq. 23 / clause 3.4 NOTE 1Sound energy level of a source steady over T = 10 s is LW + 10 lg(T/T0)LJ - LW = 10 dB, 0 dB error1.42e-14 dB±0.000000001 dB1.42e-14 dB0.0 %
CumpleISO 37442010Eq. 20One measurement encompassing Ne = 5 events is 10 lg 5 above one event6.9897 dB6.9897 dB±1.00e-12 dB-8.88e-16 dB0.1 %
CumpleISO 37412010Eq. 30Reverberation-room sound energy level inverts to a known LJ0 dB error0 dB±0.000000001 dB0 dB0.0 %
CumpleISO 37412010Eq. F.4Three equal one-third-octave bands sum to an octave level 10 lg 3 higher4.771213 dB4.771213 dB±1.00e-12 dB1.78e-15 dB0.2 %
CumpleISO 37442010Annex G / H.4.2.7C1 + C2 of Eq. (G.1)/(G.3) vanish at 120 m altitude and 23 C0 dB-0.00005 dB±0.001 dB-0.00005 dB5.0 %
CumpleISO 9614-11993Table B.2Criterion-2 factor C per band and grade, and the A-weighted grade-3 value59 tabulated values of C reproducedmax absolute deviation 0.000±000.0 %
CumpleISO 9614-11993Table 2Standard deviation s of the determination per band and grade59 tabulated values of s reproducedmax absolute deviation 0.000 dB±0 dB0 dB0.0 %
CumpleISO 9614-11993Table B.1Error factor Delta: 0,20 and 0,29 for all bands, 0,60 A-weightedprecision (all bands) = 0.2; engineering (all bands) = 0.29; survey (A-weighted) = 0.6precision (all bands) = 0.2; engineering (all bands) = 0.29; survey (A-weighted) = 0.6±000.0 %
CumpleISO 9614-11993Eq. (12)Discrete positions tiling a scanned surface give the same LW0 dB error0 dB±0.000000000001 dB0 dB0.0 %
CumpleISO 9614-11993Table B.3Five action codes, each reached by the case Figure B.1 routes to itF1 > 0,6 -> e; F2 > Ld -> ab; (F3 - F2) > 3 dB -> ab; criterion 2, 1 dB <= (F3 - F2) <= 3 dB -> c; criterion 2, (F3 - F2) <= 1 dB -> dF1 > 0,6 -> e; F2 > Ld -> ab; (F3 - F2) > 3 dB -> ab; criterion 2, 1 dB <= (F3 - F2) <= 3 dB -> c; criterion 2, (F3 - F2) <= 1 dB -> d-0 of 5 rows disagree-
CumpleISO 9614-11993Eq. (B.4)New positions N* on the concentrated subset of the measurement surfaceN* = 5 positionsN* = 5 positions±000.0 %
CumpleISO 374720109.5 EXAMPLEExpanded uncertainty U = 2 sqrt(1,5^2 + 2^2) dB, grade 2 with sigma_omc = 2,0 dB5 dB5 dB±1.00e-12 dB0 dB0.0 %
CumpleISO 37472010Table 2 / Eq. 22sigma_R0 by grade: 1,5 dB (grade 2) and 4,0 dB (grade 3), sigma_tot of Table E.1 row 2sigma_R0 grade 2 = 1.5 dB; sigma_R0 grade 3 = 4 dB; sigma_tot (1,5; 4) = 4.3 dBsigma_R0 grade 2 = 1.5 dB; sigma_R0 grade 3 = 4 dB; sigma_tot (1,5; 4) = 4.3 dB±0 dB0 dB0.0 %
CumpleISO 37472010Eq. 7 / 8.1K1 at the 6 dB validity margin, -10 lg(1 - 10^-0,6) = 1,2563 dB, and the 1,3 dB cap below itK1(6 dB) = 1,2563 dB, K1(2 dB) = 1,3 dB, 4 kHz flagged0 dB±0.000000001 dB0 dB0.0 %
CumpleISO 37472010Eq. 11 vs ISO 3741:2010 Eq. 21In situ comparison plus C2 equals the reverberation-room comparison (closed form)0 dB difference1.42e-14 dB±0.000000001 dB1.42e-14 dB0.0 %
CumpleISO 37472010Eq. 12 / Eq. 20m identical reference-source locations collapse to Eq. 11 / Eq. 19 (closed form)0 dB difference0 dB±0.000000001 dB0 dB0.0 %
CumpleISO 37472010Eq. 15 / Eq. 17N events one at a time and one measurement over N events agree (closed form)0 dB difference0 dB±0.000000001 dB0 dB0.0 %
CumpleISO 37472010Annex CC2 at 101,325 kPa and 23,0 degC is 15 lg(296,15/296) = 0,003 300 dB (theta_ref = 296 K)0.0033 dB0.0033 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 37472010Eq. C.2Static pressure at 500 m, 101,325 (1 - 2,2560e-5 x 500)^5,2553 kPa95.4609 kPa95.4609 kPa±1.00e-9 kPa0 kPa0.0 %
CumpleISO 37472010Table D.1 / Eq. D.1LWA of a flat 90 dB octave spectrum, 63 Hz to 8 kHz, with the printed Ck96.9871 dB96.9871 dB±1.00e-9 dB-1.42e-14 dB0.0 %
CumpleISO 37472010Eq. A.1Excess over the spherical free field Lp = LW - 11 - 20 lg(r/r0): a level 7 dB above it reads dLf = 7 dB7 dB7 dB±1.00e-12 dB-1.78e-15 dB0.2 %
CumpleISO 51362003Table D.1C3,4 of the sampling tube for d = 0,5 m at U = +/-5, +/-15, +/-30 m/s, 27 bands162 tabulated values reproduced to the printed 0,1 dBmax absolute deviation 0.049 dB±0.05 dB0.049 dB98 %
CumpleISO 51362003Eqs (D.2)/(D.3)Worked example: C3,4 = (1,85 + 0,038 U) dB at 1 kHz, U = +15 and -15 m/s2,42 dB at +15 m/s and 1,28 dB at -15 m/s reproducedmax absolute deviation 0.0e+00 dB±0.000000001 dB0 dB0.0 %
CumpleISO 51362003Eq. (8)Nose-cone / foam-ball correction 10 lg[1/(1 - U/c)^2] at U = 20 m/s, c = 340 m/s0.52658 dB0.52658 dB±1.00e-9 dB-2.22e-16 dB0.0 %
CumpleISO 51362003Eq. (12)Plane-wave relation LW - Lp = 10 lg(S/S0) - 10 lg(rho c/400), d = 0,5 m-7.2113 dB-7.2113 dB±0.00000100 dB-1.07e-14 dB0.0 %
CumpleISO 51362003Table 2 / Table 3Reproducibility sigma_R per band, 50 Hz to 10 kHz, and the extrapolated 12,5 to 20 kHz27 tabulated values of sigma_R reproducedmax absolute deviation 0.000 dB±0 dB0 dB0.0 %
CumpleISO 51362003Annex C Table C.1A-weighting C_j of the 27 bands, read back as LWA - LW of one band at a time27 tabulated values of C_j reproducedmax absolute deviation 5.8e-15 dB±0.000000001 dB5.77e-15 dB0.0 %
Building prediction & uncertainty15/15
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleEN 12354-12000Annex H.3Airborne prediction R'w (direct + 12 flanking paths)R'w 52 dB (13 paths)R'w 52 dB (13 paths, 52.17)-+0.17 dB-
CumpleEN 12354-12000Annex H.3 (paths)All 12 printed flanking-path values Rij,wmax abs(Rij,w - printed) <= 0,05 dB0.042 dB±0.05 dB0.042 dB84 %
CumpleEN 12354-12000Formula (5b) / Annex H.3DnT,w closure from R'w (both H.3 examples -> 54 dB)DnT,w 54 dB (printed 53,8/54,3)DnT,w 53.63 / 54.13 dB--0.17 dB vs printed-
CumpleEN 12354-22000Annex E.3Impact prediction L'n,w = Ln,w,eq - dLw + K45 dB (+/-0 dB)45 dB-0 dB-
CumpleEN 12354-22000Formula (3) / Annex E.3Standardized impact level L'nT,w (exact 0,032 V form -> 43 dB)L'nT,w 43 dB (exact 42,96; E.3 prints 42,8)L'nT,w 42.96 dB--0.001 dB-
CumpleEN 12354-32000Annex FFacade airborne prediction (R'tr,s,w / D2m,nT,w single numbers)R'tr,s,w 31 (Ctr -3); D2m,nT,w 33 dBR'tr,s,w 31 (Ctr -3); D2m,nT,w 33 dB-0-
CumpleEN 12354-42000Annex G / Formula (2)Radiated LW of a wall+door segment (side 1, low bands)LW 63/125 Hz [59.8, 61.2] dB (+/-0.1)LW [59.8, 61.2] dB-0.038 dB-
CumpleEN 12354-42000Annex E / Table G.9Exterior level of all four Table G.9 reception cellsLp 36,6 / 28,5 / 44,6 / 37,3 dB (+/-0,05)Lp 36.6 / 28.5 / 44.6 / 37.3 dB-0.046 dB-
CumpleISO 12999-12020Table 2Airborne band uncertainty, situation A @ 1 kHz1.8 dB1.8 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 12999-12020Annex B, Table B.2One-decimal single numbers Rw / Rw+C50-5000 / Rw+Ctr,50-500057.4 / 56.4 / 51.1 dB57.4 / 56.4 / 51.1 dB-+0.00 dB-
CumpleISO 12999-12020Annex B, Formulae (B.2)/(B.6)Single-number uncertainties (uncorrelated 0,6/0,8; correlated u(Rw) 1,9)u_uncorr 0.6 / 0.8 dB; u_corr(Rw) 1.9 dB0.60 / 0.79 dB; 1.90 dB--0.00 dB-
CumpleISO 12999-12020Clause 8 / Table 8Expanded uncertainty U = 1.96 u (95 % two-sided, Rw sit. A)2.352 dB2.352 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 12999-22020Table 4 / Formula (1)Absorption coefficient +/-U (k=2), reproducibility, 20 x 1/3-oct bandsU(k=2) = [0.33, 0.26, 0.22, 0.17, 0.13, 0.11, 0.09, 0.08, 0.08, 0.08, 0.08, 0.08, 0.08, 0.09, 0.09, 0.09, 0.1, 0.11, 0.13, 0.16]U(k=2) = [0.33, 0.26, 0.22, 0.17, 0.13, 0.11, 0.09, 0.08, 0.08, 0.08, 0.08, 0.08, 0.08, 0.09, 0.09, 0.09, 0.1, 0.11, 0.13, 0.16]-exact-
CumpleISO 12999-22020Table 5 / Formula (4)Practical coefficient +/-U (k=2), reproducibility, 5 octave bandsU(k=2) = [0.09, 0.08, 0.08, 0.08, 0.1]U(k=2) = [0.09, 0.08, 0.08, 0.08, 0.1]-exact-
CumpleISO 12999-22020Clause 7, Examples 1/2Single-number U (k=2): alpha_w and DLalpha,NRDalpha_w +/-0.07, DLalpha +/-1.6 dBalpha_w +/-0.07, DLalpha +/-1.6 dB-exact-
Outdoor propagation & occupational exposure10/10
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 9613-11993Table 1Air attenuation @ 10 degC, 70 %, 1 kHz3.66 dB/km3.658 dB/km±0.01 dB/km-0.002 dB/km20 %
CumpleISO 9613-11993Table 1Air attenuation @ 0 degC, 20 %, 2 kHz34.6 dB/km34.64 dB/km±0.1 dB/km0.04 dB/km40 %
CumpleISO 9613-21996Table 2Atmospheric attenuation grid, 6 conditions x 8 octave bands, dB/kmall 48 cells within half a printed digitworst residual 0.939 x tolerance-0.939 x-
CumpleISO 9613-21996Eq. (7)Geometrical divergence Adiv = 20 lg(d/d0) + 11 at 100 m51 dB51 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 9613-21996Table 3Ground b'(0) porous limit -> Agr(250 Hz) = 2(-1.5 + 10.1)17.2 dB17.2 dB±0.00000100 dB0 dB0.0 %
CumpleISO 9613-21996clause 7.4Single-edge diffraction saturates at the 20 dB cap20 dB20 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 9613-21996clause 7.4Double-edge diffraction saturates at the 25 dB cap25 dB25 dB±1.00e-9 dB0 dB0.0 %
CumpleISO 96122009Annex DTask-based LEX,8h + U (welder day, case a)LEX,8h 84.3; U 2.7 dBLEX,8h 84.3; U 2.7 dB--0.01; +0.02 dB-
CumpleISO 96122009Annex EJob-based LEX,8h + U (production line, 18 workers)LEX,8h 88.1; U 3.8 dBLEX,8h 88.2; U 3.8 dB-+0.06; -0.03 dB-
CumpleISO 96122009Annex FFull-day LEX,8h + U (forklift drivers)LEX,8h 90.1; U 3.4 dBLEX,8h 90.1; U 3.4 dB-+0.02; +0.03 dB-
Materials: absorption, airflow & impedance6/6
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 116541997Annex A.1Weighted absorption alpha_w (no indicator)0.60 (class C, no indic.)0.60 (class C, '')-0-
CumpleISO 116541997Annex A.2Weighted absorption alpha_w with M indicator0.60(M)0.60(M)-0-
CumpleISO 9053-22020Annex A.3Thermal boundary-layer thickness b0.00183 m0.00183 m±0.00001 m0.00000485 m97 %
CumpleISO 9053-22020Annex A.3Effective ratio of specific heats kappa'1.371.37±0.0010.00025952 %
CumpleISO 10534-11996Eqs (9)/(13)/(14)Absorption from standing-wave ratio s=3alpha 0.75 (+/-0), |r| 0.5alpha 0.75, |r| 0.5000-0-
CumpleISO 10534-2Eq. (17) / Annex DTwo-microphone round trip recovers a known reflection factorabs(r - (0.3-0.4j)) = 0 (identity, +/-1e-9)2.83e-16±0.0000000012.83e-160.0 %
Scattering & diffusion (ISO 17497)14/14
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 17497-12004Eq (2)Reference speed of sound at 20 C343.2 m/s343.2 m/s±0.00000100 m/s0 m/s0.0 %
CumpleISO 17497-12004Eqs (1)/(4)/(5)Scattering coefficient (synthetic chain)0.09310.0931±1.00e-900.0 %
CumpleISO 17497-12004Annex A.5Expanded uncertainty of scattering coefficient0.029710.02971±0.0000010000.0 %
CumpleISO 17497-22012Formula (5)Directional diffusion coefficient (QRD, model arc)0.10990.1099±0.0000010000.0 %
CumpleISO 17497-22012Formula (5)Directional diffusion coefficient (flat reference)0.00490.0049±0.0000010000.0 %
CumpleISO 17497-22012Formula (7)Normalised diffusion coefficient (QRD, model arc)0.10550.1055±0.0000010000.0 %
CumpleCox & D'Antonio3eApp. B (2D BEM)Normalised diffusion d_n, N=7 QRD x 6 periods, 200 Hz band (low-band anchor)00.000380±0.0150.0003802.5 %
CumpleCox & D'Antonio3eApp. B (2D BEM)Normalised diffusion d_n, N=7 QRD x 6 periods, 250 Hz band (low-band anchor)0.010.001±0.015-0.00960 %
CumpleCox & D'Antonio3eApp. B (2D BEM)Normalised diffusion d_n, N=7 QRD x 6 periods, 315 Hz band (low-band anchor)0.010.002±0.015-0.00853 %
CumpleCox & D'Antonio3eApp. B (2D BEM)Normalised diffusion d_n, N=7 QRD x 6 periods, 400 Hz band (low-band anchor)0.010.008±0.015-0.00213 %
CumpleISO 17497-22012Formula (8)Zenith area factor (radians convention)1.571051.57105±0.0000010000.0 %
CumpleCox & D'AntonioEq (10.3)QRD deepest well depth (N=7, f0=500 Hz)0.196 m0.196 m±1.00e-12 m0 m0.0 %
CumpleCox & D'AntonioEq (5.8) + ISO 17497-2 Formula (7)Flat-panel predicted normalised diffusion (self-reference zero)00±1.00e-1200.0 %
CumpleCox & D'AntonioEq (5.8) + ISO 17497-2 Formula (7)QRD predicted normalised diffusion at 2 kHz (above flat panel)0.2080.208±1.00e-900.0 %
In-situ road absorption (ISO 13472)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 13472-12002Clause 4.2Geometrical-spreading factor Kr0.66670.6667±1.00e-1200.0 %
CumpleISO 13472-12002Annex AMaximum-sampled-area radius1.3425 m1.3425 m±0.00000100 m0 m0.0 %
CumpleISO 13472-22010Clause 5.4.1Spot-tube upper usable frequency f_u1989.4 Hz1989.4 Hz±0.1 Hz-2.27e-13 Hz0.0 %
Precision sound power (ISO 3745 / 9614-3)4/4
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 37452012Clause 10.5 EXAMPLEExpanded uncertainty U (k=2)4.123 dB4.123 dB±0.001 dB0 dB0.0 %
CumpleISO 37452012Eq (11)K1 background floor (6 dB edge band)1.2563 dB1.2563 dB±0.0001 dB-0.00000423 dB4.2 %
CumpleISO 37452012Eq (16)Meteorological C1 at 23 C reference-0.1282 dB-0.1282 dB±0.0001 dB3.15e-7 dB0.3 %
CumpleISO 9614-32002Eqs (5)/(8)/(9)Uniform-intensity LW recovery80 dB80 dB±1.00e-9 dB0 dB0.0 %
Outdoor propagation quality assurance (ISO/TR 17534-3)34/34
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO/TR 17534-32015T01Receiver band levels over ground G = 0, dB0 dB0.008 dB±0.05 dB0.008 dB16 %
CumpleISO/TR 17534-32015T01Receiver total level over ground G = 0, dB47.46 dB47.457 dB±0.05 dB-0.003 dB6.0 %
CumpleISO/TR 17534-32015T01Receiver A-weighted level over ground G = 0, dB44.29 dB44.293 dB±0.05 dB0.003 dB6.0 %
CumpleISO/TR 17534-32015T02Receiver band levels over ground G = 0.5, dB0 dB0.01 dB±0.05 dB0.01 dB20 %
CumpleISO/TR 17534-32015T02Receiver total level over ground G = 0.5, dB44.61 dB44.608 dB±0.05 dB-0.002 dB4.0 %
CumpleISO/TR 17534-32015T02Receiver A-weighted level over ground G = 0.5, dB41.53 dB41.526 dB±0.05 dB-0.004 dB8.0 %
CumpleISO/TR 17534-32015T03Receiver band levels over ground G = 1, dB0 dB0.008 dB±0.05 dB0.008 dB16 %
CumpleISO/TR 17534-32015T03Receiver total level over ground G = 1, dB42.8 dB42.8 dB±0.05 dB0.000337 dB0.7 %
CumpleISO/TR 17534-32015T03Receiver A-weighted level over ground G = 1, dB39.14 dB39.139 dB±0.05 dB-0.001 dB2.0 %
CumpleISO/TR 17534-32015Table 3Ground-projected path length dp, m194.16 m194.165 m±0.005 m0.005 m100 %
CumpleISO/TR 17534-32015Table 3Straight-line path length d3, m194.19 m194.188 m±0.005 m-0.002 m40 %
CumpleISO/TR 17534-32015Table 3Geometrical divergence Adiv, dB56.76 dB56.764 dB±0.05 dB0.004 dB8.0 %
CumpleISO/TR 17534-32015Table 3Middle-region overlap factor q (ISO 9613-2 Table 3, note 2)0.230.2275±0.005-0.002550 %
CumpleISO/TR 17534-32015T04Receiver band levels, flat ground of three kinds, general method, dB0 dB0.0124 dB±0.05 dB0.0124 dB25 %
CumpleISO/TR 17534-32015T04Receiver total level, flat ground of three kinds, general method, dB45.25 dB45.248 dB±0.05 dB-0.002 dB4.0 %
CumpleISO/TR 17534-32015T04Receiver A-weighted level, flat ground of three kinds, general method, dB42.23 dB42.227 dB±0.05 dB-0.003 dB6.0 %
CumpleISO/TR 17534-32015T06Receiver band levels, ground rising under the receiver, general method, dB0 dB0.0111 dB±0.05 dB0.0111 dB22 %
CumpleISO/TR 17534-32015T06Receiver total level, ground rising under the receiver, general method, dB43.85 dB43.85 dB±0.05 dB0.000251 dB0.5 %
CumpleISO/TR 17534-32015T06Receiver A-weighted level, ground rising under the receiver, general method, dB40.59 dB40.589 dB±0.05 dB-0.001 dB2.0 %
CumpleISO/TR 17534-32015T05Receiver band levels, flat ground of three kinds, alternative method, dB0 dB0.0075 dB±0.05 dB0.0075 dB15 %
CumpleISO/TR 17534-32015T05Receiver total level, flat ground of three kinds, alternative method, dB42.46 dB42.461 dB±0.05 dB0.001 dB2.0 %
CumpleISO/TR 17534-32015T05Receiver A-weighted level, flat ground of three kinds, alternative method, dB39.3 dB39.298 dB±0.05 dB-0.002 dB4.0 %
CumpleISO/TR 17534-32015T07Receiver band levels, ground rising under the receiver, alternative method, dB0 dB0.0088 dB±0.05 dB0.0088 dB18 %
CumpleISO/TR 17534-32015T07Receiver total level, ground rising under the receiver, alternative method, dB42.91 dB42.914 dB±0.05 dB0.004 dB8.0 %
CumpleISO/TR 17534-32015T07Receiver A-weighted level, ground rising under the receiver, alternative method, dB39.75 dB39.749 dB±0.05 dB-0.001 dB2.0 %
CumpleISO/TR 17534-32015Table 8 (T04)Region ground factor Gs (source region) over three areas0.20.2±0.00500.0 %
CumpleISO/TR 17534-32015Table 8 (T04)Region ground factor Gm (middle region) over three areas0.430.4261±0.005-0.003978 %
CumpleISO/TR 17534-32015Table 8 (T04)Region ground factor Gr (receiver region) over three areas0.670.6703±0.0050.00036.0 %
CumpleISO/TR 17534-32015Table 14 (T06)Region ground factor Gs (source region) over three areas0.90.9±0.00500.0 %
CumpleISO/TR 17534-32015Table 14 (T06)Region ground factor Gm (middle region) over three areas0.60.5985±0.005-0.001530 %
CumpleISO/TR 17534-32015Table 14 (T06)Region ground factor Gr (receiver region) over three areas0.370.3723±0.0050.002346 %
CumpleISO/TR 17534-32015Table 14 (T06)Straight-line path length d3, m194.6 m194.6 m±0.005 m-0.000411 m8.2 %
CumpleISO/TR 17534-32015Table 17 (T05)Mean path height hm over flat ground, m2.5 m2.4997 m±0.005 m-0.0003 m6.0 %
CumpleISO/TR 17534-32015Table 17 (T07)Mean path height hm over a slope, m4.99 m4.9888 m±0.005 m-0.0012 m24 %
Human vibration (ISO 8041 / 2631 / 5349)15/15
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 8041-12017Table B.8Wk design-goal factor at 6,31 Hz1.0541.0544±0.1%0.000438 %
CumpleISO 8041-12017Table B.9Wm design-goal factor at 1,585 Hz0.93420.9342±0.1%0.00003403.6 %
CumpleISO 8041-12017Table 1Wh factor at the 500 rad/s reference0.2020.202±0.15%0.00001936.4 %
CumpleISO 8041-12017Table B.1Wb design-goal factor at 6,31 Hz1.0541.0545±0.1%0.000547 %
CumpleISO 8041-12017Table B.1Wb design-goal factors at 1 / 100 Hzmax rel dev ≤ 0,1 %0.000267±0.0010.00026727 %
CumpleISO 8041-12017Table 1Wc factor at the 100 rad/s reference0.51450.5145±0.1%-0.00004809.3 %
CumpleISO 8041-12017Table 1 + Table B.3Wd factors at the 100 rad/s reference and 1 Hzmax rel dev ≤ 0,1 %0.000162±0.0010.00016216 %
CumpleISO 8041-12017Table B.4We design-goal factor at 8 Hz0.12630.1263±0.1%0.000048438 %
CumpleISO 8041-12017Table B.5Wf design-goal factors at 0,1585 / 0,1 Hzmax rel dev ≤ 0,1 %0.000098±0.0010.0000989.8 %
CumpleISO 8041-12017Table B.7Wj design-goal factors at 6,31 / 8 Hzmax rel dev ≤ 0,1 %0.00001±0.0010.000011.0 %
CumpleISO 8041-12017Table 5 + Annex BAll nine weightings inside the tolerance envelope (318 printed bands)0 bands outside the Table 5 tolerances0±000.0 %
CumpleISO 5349-22001Example E.2.1Single-tool daily exposure A(8)4.1 m/s²4.14 m/s²±0.05 m/s²0.037 m/s²74 %
CumpleISO 5349-22001Example E.3Forestry three-task A(8)3.6 m/s²3.61 m/s²±0.05 m/s²0.01 m/s²20 %
CumpleISO 5349-12001Eq. (C.1)VWF 10 % lifetime Dy at A(8)=74 yr4.04 yr±0.1 yr0.042 yr42 %
CumpleDirective 2002/44/ECArt. 3HAV/WBV action & limit valuesHAV 2.5/5.0, WBV 0.5/1.15 m/s^2HAV 2.5/5.0, WBV 0.5/1.15 m/s^2-0-
Machine vibration evaluation (ISO 20816)64/64
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 20816-12016Annex D.2Vector change between two steady states, mm/s5.2 mm/s5.171 mm/s±0.05 mm/s-0.029 mm/s58 %
CumpleISO 20816-12016Annex D.2Change a magnitude comparison would report, mm/s-0.5 mm/s-0.5 mm/s±0.05 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Annex C.2Zone A limit factor Zbound of Formula (C.1)11±0.00500.0 %
CumpleISO 20816-12016Annex C.2Zone B limit factor Zbound of Formula (C.1)2.562.56±0.00500.0 %
CumpleISO 20816-12016Annex C.2Zone C limit factor Zbound of Formula (C.1)6.46.4±0.00500.0 %
CumpleISO 20816-12016Table C.1Typical zone A/B boundary, low end of the range, mm/s0.71 mm/s0.71 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Table C.1Typical zone A/B boundary, high end of the range, mm/s4.5 mm/s4.5 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Table C.1Typical zone B/C boundary, low end of the range, mm/s1.8 mm/s1.8 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Table C.1Typical zone B/C boundary, high end of the range, mm/s9.3 mm/s9.3 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Table C.1Typical zone C/D boundary, low end of the range, mm/s4.5 mm/s4.5 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Table C.1Typical zone C/D boundary, high end of the range, mm/s14.7 mm/s14.7 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Table C.1Every range end is a rung of the printed ladder00±0.500.0 %
CumpleISO 20816-12016Figure 9Criterion is flat between the corner frequencies, worst deviation, mm/s0 mm/s0 mm/s±0.000000001 mm/s0 mm/s0.0 %
CumpleISO 20816-12016Figure 9Constant-displacement slope below the lower corner, dB per octave6.0206 dB6.0206 dB±0.001 dB-8.67e-8 dB0.0 %
CumpleISO 20816-12016Figure 9Constant-acceleration slope above the upper corner, dB per octave6.0206 dB6.0206 dB±0.001 dB-8.67e-8 dB0.0 %
CumpleISO 10816-32009Table A.1Zone boundaries, group 1 on rigid supports, displacement, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 10816-32009Table A.1Zone boundaries, group 1 on rigid supports, velocity, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 10816-32009Table A.1Zone boundaries, group 1 on flexible supports, displacement, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 10816-32009Table A.1Zone boundaries, group 1 on flexible supports, velocity, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 10816-32009Table A.2Zone boundaries, group 2 on rigid supports, displacement, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 10816-32009Table A.2Zone boundaries, group 2 on rigid supports, velocity, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 10816-32009Table A.2Zone boundaries, group 2 on flexible supports, displacement, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 10816-32009Table A.2Zone boundaries, group 2 on flexible supports, velocity, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 10816-320095.2.3The more restrictive of the two quantities decides the zone33±0.500.0 %
CumpleISO 10816-320095.4.1ALARM above a baseline, as a fraction of the zone B/C boundary0.250.25±0.000500.0 %
CumpleISO 10816-320095.4.1ALARM ceiling, as a multiple of the zone B/C boundary1.251.25±0.000500.0 %
CumpleISO 10816-320095.4.2TRIP ceiling, as a multiple of the zone C/D boundary1.251.25±0.000500.0 %
CumpleISO 10816-320095.3Threshold of a significant change, as a fraction of the zone B/C boundary0.250.25±0.00055.55e-170.0 %
CumpleISO 20816-92020Table 2Gear-unit displacement zone boundaries at a rating of 31.5, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 20816-92020Table 2Gear-unit displacement zone boundaries at a rating of 50, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 20816-92020Table 2Gear-unit displacement zone boundaries at a rating of 80, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 20816-92020Table 2Gear-unit displacement zone boundaries at a rating of 125, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 20816-92020Table 2Gear-unit displacement zone boundaries at a rating of 200, worst deviation0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 20816-92020Table 3Gear-unit velocity zone boundaries at a rating of 3.15, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-92020Table 3Gear-unit velocity zone boundaries at a rating of 5, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-92020Table 3Gear-unit velocity zone boundaries at a rating of 8, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-92020Table 3Gear-unit velocity zone boundaries at a rating of 12.5, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-92020Table 3Gear-unit velocity zone boundaries at a rating of 20, worst deviation0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 5, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 8, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 12.5, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 20, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 31.5, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 50, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 80, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 125, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 4Gear-unit acceleration zone boundaries at a rating of 200, worst deviation0 m/s²0 m/s²±0.0005 m/s²0 m/s²0.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class I, subclass a, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class I, subclass b, low power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class I, subclass b, high power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class II, subclass a, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class II, subclass b, low power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class II, subclass b, high power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class III, subclass a, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class III, subclass b, low power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class III, subclass b, high power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class IV, subclass a, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class IV, subclass b, low power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Table 5Gear-unit ratings for class IV, subclass b, high power, worst deviation00±0.000500.0 %
CumpleISO 20816-92020Figure A.1Fall of the displacement rating curve a decade above its corner, dB10 dB10 dB±0.0005 dB0 dB0.0 %
CumpleISO 20816-92020Figure A.1Displacement rating curve below its corner, worst deviation from DR, µm0 µm0 µm±0.0005 µm0 µm0.0 %
CumpleISO 20816-92020Figure A.2Fall of the velocity rating curve a decade outside each corner, dB14 dB14 dB±0.0005 dB0 dB0.0 %
CumpleISO 20816-92020Figure A.2Velocity rating curve between its corners, worst deviation from VR, mm/s0 mm/s0 mm/s±0.0005 mm/s0 mm/s0.0 %
CumpleISO 20816-92020Table 4, noteVelocity rungs carried onto acceleration rungs at 280 Hz, worst error, %0 %2.034 %±3 %2.034 %68 %
Speech intelligibility (ANSI S3.5-1997)24/24
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleANSI S3.51997Table 3Band-importance function normalisation11±1.00e-900.0 %
CumpleASA WGS3-79 SII.C (clause 5.4)Equivalent masking spectrum level at 200 Hz-1.665-1.665±0.0010.00028328 %
CumpleANSI S3.51997clause 5.6Equivalent disturbance in quiet at 5000 Hz-23.6 dB-23.6 dB±0.01 dB0 dB0.0 %
CumpleASA WGS3-79 SII.C (clause 6)SII, noise 30 dB plus hearing loss 40 dB0.2184540.218454±0.000001-3.05e-110.0 %
CumpleANSI S3.51997Annex C.2Worked example (SII.C / R CRAN, errata applied)0.8513750.851375±0.000001-2.50e-110.0 %
CumpleANSI S3.51997Table C.2 (errata)Masking Zi at 200 Hz, corrected worksheet34.66 dB34.66 dB±0.01 dB-0.002 dB40 %
CumpleASA WGS3-79 SII.C (clause 6)SII, standard speech in quiet, normal hearing0.995825170.99582517±0.000001-3.33e-150.0 %
CumpleASA WGS3-79 TO.TSTOfficial one-third-octave test case0.4450.445±0.0010.00039178 %
CumpleASA WGS3-79 TO_1.TSTOfficial test case, alternative importance0.4380.438±0.0010.00021844 %
CumpleASA WGS3-79 CB.TSTOfficial critical-band test case0.2730.273±0.001-0.000064613 %
CumpleASA WGS3-79 CB_1.TSTCritical band, alternative importance0.410.41±0.0010.00047495 %
CumpleASA WGS3-79 ECB.TSTOfficial equally-contributing test case0.2780.278±0.0010.00013928 %
CumpleASA WGS3-79 ECB_1.TSTEqually contributing, alternative importance0.410.41±0.0010.00047495 %
CumpleASA WGS3-79 OCTAVE.TSTOfficial octave-band test case0.4910.491±0.001-0.00003757.5 %
CumpleASA WGS3-79 OCTAVE_1.TSTOctave band, alternative importance0.3230.323±0.001-0.000062513 %
CumpleANSI S3.51997Annex C.1Octave-band worked example (SII.C)0.5040.504±0.0015.00e-110.0 %
CumpleANSI S3.51997Table C.1 (errata)Level distortion Li, row i = 511±0.01-0.00480 %
CumpleANSI S3.51997Table 1Critical-band importance normalisation11±1.00e-900.0 %
CumpleANSI S3.51997Table 2Equally-contributing importance, 17 x 0.05880.99960.9996±1.00e-9-1.11e-160.0 %
CumpleANSI S3.51997Table 4Octave-band importance normalisation11±1.00e-900.0 %
CumpleANSI S3.51997Table 4Octave-band Ui and Xi equal Table 3's0 dB0 dB±1.00e-9 dB0 dB0.0 %
CumpleANSI S3.51997Table 1Critical-band table, all 21 rows00±1.00e-900.0 %
CumpleASA WGS3-79 SII.C (clause 6)Flat-input cases, all four procedures00.0000000001±0.0000000010.000000000110.0 %
CumpleANSI S3.51997Table 3Loud-effort speech spectrum level at 1 kHz42.16 dB42.16 dB±1.00e-9 dB0 dB0.0 %
Objective intelligibility (STOI / ESTOI)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleTaal et al.2011(Eq. 6, degenerate)STOI of a signal against itself = 1 (perfect correlation)11±0.000001-3.33e-150.0 %
CumpleJensen & Taal2016(Eq. 8, degenerate)ESTOI of a signal against itself = 1 (perfect spectral correlation)11±0.000001-4.44e-160.0 %
CumpleTaal et al.2011(monotonicity with SNR)STOI rises from -15 dB to +25 dB SNR speech-shaped noiseSTOI(+25 dB) - STOI(-15 dB) > 0.20.462 (0.389 -> 0.851)-0-
Impulsive-sound prominence (NT ACOU 112)2/2
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleNT ACOU 1122002Formula 1Predicted prominence, OR=1000 dB/s, LD=30 dB11.954211.9542±0.00010.000042543 %
CumpleNT ACOU 1122002Formula 2Adjustment KI to LAeq at prominence P=109 dB9 dB±1.00e-9 dB0 dB0.0 %
Impulsive-sound prominence (ISO/PAS 1996-3)2/2
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO/PAS1996-3:2022 3.5Onset rate of a 30 dB ramp over 0.30 s100 dB/s100 dB/s±0.00000100 dB/s-7.11e-14 dB/s0.0 %
CumpleISO/PAS1996-3:2022 Formula 3Adjustment KI of the ramp onset7.1176 dB7.1176 dB±0.00000100 dB-2.66e-15 dB0.0 %
Room noise (ANSI S12.2-2019)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleANSI S12.22019Table 1NC-40 curve, tangency self-consistency4040±1.00e-900.0 %
CumpleANSI S12.22019Table D.1RC-31 Mark II curve, 63 Hz level5151±1.00e-900.0 %
CumpleANSI S12.22019clause D.4RC-35 curve, mid-frequency average LMF3535±1.00e-900.0 %
Hearing threshold (ISO 7029 / ISO 389-7)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 70292017Table 1Median threshold, male age 60 at 4 kHz20.209 dB20.208 dB±0.001 dB-0.0000261 dB2.6 %
CumpleISO 70292017Table 2Upper spread su, male age 60 at 1 kHz10.153 dB10.153 dB±0.001 dB-0.0000319 dB3.2 %
CumpleISO 389-72005Table 1Free-field reference threshold at 1 kHz2.4 dB2.4 dB±1.00e-9 dB0 dB0.0 %
Measurement uncertainty (GUM / Supplement 1)7/7
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO/IEC Guide98-3-1 clause 9.2Combined uncertainty, additive model22±1.00e-900.0 %
CumpleISO/IEC Guide98-3 Table G.2Coverage factor, p=0.99, v=162.922.921±0.0050.00120 %
CumpleISO/IEC Guide98-3 Annex G.4Welch-Satterthwaite effective dof4040±0.0000010000.0 %
CumpleISO/IEC Guide98-3 Annex H.1End-gauge combined uncertainty uc, nm31.71 nm31.71 nm±0.01 nm0.001 nm10 %
CumpleISO/IEC Guide98-3 Annex H.1End-gauge expanded uncertainty U99, nm92.1 nm92.1 nm±0.1 nm0.04 nm40 %
CumpleISO/IEC Guide98-3 Annex H.2 (Table H.3)Correlated V/I/phi budget: uc(R), ohm0.071 ohm0.071 ohm±0.001 ohm0.0000714 ohm7.1 %
CumpleISO/IEC Guide98-3-1 Table 3 (clause 9.2.3)Seeded Monte Carlo, rectangular sum: 95 % interval endpoint+/-3.88 (u = 2.0)+/-3.886 (u = 2.002)-0.006-
Noise-induced hearing loss (ISO 1999)6/6
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 19992013Table D.2Median NIPTS, 4 kHz, 90 dB, 20 yr13 dB12.9 dB±0.5 dB-0.057 dB11 %
CumpleISO 19992013Table D.2Worst-10 % NIPTS, 4 kHz, 90 dB, 20 yr18 dB17.8 dB±0.5 dB-0.239 dB48 %
CumpleISO 19992013Table D.4Worst-10 % NIPTS, 3 kHz, 100 dB, 40 yr60 dB59.8 dB±0.5 dB-0.172 dB34 %
CumpleISO 19992013Annex C, Formulae (C.6) to (C.8)NIPTS at 1/2/4 kHz, 90 dB, 30 yr, Q = 10 % (annex inputs)0, 9, 19 dB0, 9, 19 dB-0 dB-
CumpleISO 19992013Annex C, Formula (C.5)Compressed 4 kHz shift, Formula (1) with the annex's H = 36 dB13.3 dB13.3 dB±0.1 dB-3.55e-15 dB0.0 %
CumpleISO 19992013Annex C, Formula (C.11)Hearing threshold level with age and noise, 1/2/4 kHz mean, Q = 10 %31.1 dB31.1 dB±0.1 dB0 dB0.0 %
Hearing protectors (ISO 4869-2)4/4
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 4869-22018Annex A, Table A.1Assumed protection: mean and spread over 16 subjects, 8 bandsm_f and s_f equal to Table A.1 at 1 dp, all 8 bandsmax deviation 0.000 dB-0.000 dB-
CumpleISO 4869-22018Formula (2), Annex BOctave-band method: Table B.1 net levels and L'p,A84Table B.1 rows exact; L'p,A84 = 81.4 dBrows within 0.000 dB; 81.4 dB-+0.000 dB-
CumpleISO 4869-22018Formulae (12) to (15), Annex CHML method: 16 subject triples, statistics and H84/M84/L84Table C.2 exact; H84/M84/L84 = (24, 18, 13) dBwithin 0.000 dB; (24, 18, 13) dB-0.000 dB-
CumpleISO 4869-22018Formulae (16) to (24)HML and SNR applications land on the annexes' 82 dBPNR84 = 22,5 dB; SNR84 = 21 dB; both report 82 dB22.5 dB; 21 dB; 82 and 82 dB-+0.000 dB-
Multiple-shock whole-body vibration (ISO 2631-5)6/6
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 2631-52018Formula 3Daily acceleration dose, 5 x 40 m/s2 peaks55.97 m/s²55.97 m/s²±0.01 m/s²-0.002 m/s²20 %
CumpleISO 2631-52018Formula C.3Stress variable R, Annex C male example1.221.22±0.01-0.00002580.3 %
CumpleISO 2631-52018Formula C.5Injury probability, Annex C male example0.370.37±0.01-0.00330 %
CumpleISO 2631-52018Annex C NOTE 5Compressive stress Sd, female example1.4 MPa1.4 MPa±0.01 MPa-0.001 MPa10 %
CumpleISO 2631-52018Annex C NOTE 5Stress variable R, female example0.970.96±0.01-0.00880 %
CumpleISO 2631-52018Formula 1 vs Annex D Table D.1Seat-to-spine transfer vs the 256 Hz digital filter (0,5-80 Hz)max abs(Formula 1 - filter) ≤ 0,040.001±0.040.0012.5 %
Sound absorption in enclosed spaces (EN 12354-6)2/2
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleEN 12354-62003Formula 1Equivalent absorption area, Annex E bare room2.26 m²2.26 m²±0.01 m²0.003 m²30 %
CumpleEN 12354-62003Formula 5Reverberation time, Annex E bare room2.1 s2.1 s±0.1 s0.003 s6.0 %
Prominent discrete tones (ECMA-418-1)2/2
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleECMA-418-12024Clause 10 Formula (2)Critical band at 1 kHz (f1,c / f2,c / dfc)dfc 162.2 Hz (+/-0.05 Hz); edges 922.2-1084.4 Hzdfc 162.22 Hz; edges 922.2-1084.4 Hz-0.017 Hz-
CumpleECMA-418-12024Clause 11.6 Formula (14)Proximity spacing dfprox at 150 / 850 Hz23 Hz @ 150 Hz; 63.8 Hz @ 850 Hz (+/-0.5 Hz)23.0 Hz; 63.8 Hz-+0.004; +0.044 Hz-
Tonal audibility (ISO/PAS 20065)11/11
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO/PAS20065:2016 Formulae (12)-(14)Audibility at 137.3 Hz, Annex E spectrum 14.99 dB5.01 dB±0.05 dB0.022 dB44 %
CumpleISO/PAS20065:2016 Formula (13)Masking index av at 137.3 / 592.2 Hz-2.02 dB @ 137.3 Hz; -2.4 dB @ 592.2 Hz (+/-0.005 dB)-2.017 dB; -2.400 dB-+0.003; +0.000 dB-
CumpleISO/PAS20065:2016 Formula (20)Mean audibility of the five spectra, Annex E6.96 dB6.98 dB±0.05 dB0.018 dB36 %
CumpleISO/PAS20065:2016 Formula (6)Mean narrow-band level LS from spectrum, Table E.149.22 dB49.22 dB±0.02 dB-0.001 dB5.0 %
CumpleISO/PAS20065:2016 Clause 6Extended uncertainty U of the 137.3 Hz tone, Table E.22.79 dB2.8 dB±0.02 dB0.006 dB30 %
CumpleISO/PAS20065:2016 Formulae (28)-(29)Extended uncertainty of the mean audibility, Annex E Step 41.38 dB1.38 dB±0.01 dB-0.003 dB30 %
CumpleISO/PAS20065:2016 Formula (8)Tone level LT from spectrum, Table E.167.96 dB67.96 dB±0.02 dB-0.005 dB25 %
CumpleISO/PAS20065:2016 Clause 5.3.8Tone detection over the spectrum, Table E.1tones at [118.4, 137.3, 158.8] Hztones at [118.4, 137.3, 158.8] Hz-exact-
CumpleISO/PAS20065:2016 Clause 5.3.8 Step 3Same-band FG combination inside analyze_spectrum, Table E.2 row 2 FG72.15 dB72.15 dB±0.02 dB-0.002 dB10 %
CumpleISO/PAS20065:2016 Formula (17)Multi-tone FG combination, Table E.172.15 dB72.15 dB±0.02 dB-0.002 dB10 %
CumpleISO/PAS20065:2016 Formulae (18)/(19)Two-tone separation fD (DIN 45681 Annex J), 137.3 / 212 HzfD(137.3)=24.09, fD(212)=21.0 Hz; Annex E pair combinedfD(137.3)=24.09, fD(212)=21.00 Hz; Annex E pair combined-exact-
Psychoacoustic annoyance & fluctuation strength (Fastl & Zwicker)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleFastl & ZwickerEqs (16.2)-(16.4)Psychoacoustic annoyance, worked (N5,S,F,R) tuple37.047837.0477±0.001-0.000110 %
CumpleFastl & ZwickerEq (10.2)Fluctuation strength of AM broadband noise (60 dB, m=1, 4 Hz)3.6943 vacil3.6943 vacil±0.001 vacil-0.0000325 vacil3.2 %
CumpleFastl & Zwicker Ch. 10 / Osses et al.2016Fluctuation-strength calibration: 1 kHz / 60 dB / m=1 / 4 Hz AM tone1 vacil1 vacil±0.05 vacil-1.15e-14 vacil0.0 %
Electroacoustics: distortion & frequency response20/20
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 60268-32013(14.12.3.2)THD (rel. total RMS, the R convention the clause defines)0.1128530.112853±0.00015.55e-170.0 %
CumpleClosed-form harmonic synthesis (THD_F convention)THD (rel. fundamental, the widespread datasheet convention)0.1135780.113578±0.00018.33e-170.0 %
CumpleIEC 60268-52003(20.3/20.4)Characteristic sensitivity level, 1 W into 8 ohm at 1 m (flat 90 dB)90 dB90 dB±0.000001 dB0 dB0.0 %
CumpleIEC 60268-52003(21.2)Effective frequency range = -10 dB crossings (50 Hz / 18 kHz)50 Hz / 18000 Hz (ref -10 dB crossings)50.000 Hz / 18000.0 Hz--0.000 / -0.000 Hz-
CumpleIEC 60268-32013(14.12.5)2nd-order harmonic distortion d2 (rel. total)0.0993610.099361±0.0001-1.39e-170.0 %
CumpleIEC 60268-42014(11.1/11.3)Microphone sensitivity level, 12.5 mV/Pa -> 20 lg 0.0125 dB re 1 V/Pa-38.0618 dB-38.0618 dB±0.00001 dB2.60e-7 dB2.6 %
CumpleIEC 60268-42014(12.2)Effective frequency range = +/-3 dB tolerance crossings (40 Hz / 18 kHz)40 Hz / 18000 Hz (+/-3 dB tolerance crossings)40.000 Hz / 18000.0 Hz-0.000 / -0.000 Hz-
CumpleIEC 60268-42014(13.2.2)Directivity index of the ideal cardioid, 10 lg 3 dB (11.2.2 a integral)4.771213 dB4.771214 dB±0.005 dB0.000001 dB0.0 %
CumpleIEC 60268-42014(17.2)Equivalent noise level, 2.5 uV over 12.5 mV/Pa -> 200 uPa = 20 dB SPL20 dB SPL20 dB SPL±1.00e-9 dB SPL0 dB SPL0.0 %
CumpleIEC 60268-32013(14.12.7.2 g)Modulation distortion d_m,2 (arithmetic sideband sum over U_2,f2)0.160.16±0.0001-3.16e-150.0 %
CumpleIEC 60268-32013(14.12.7.2 h)Modulation distortion d_m,3 (arithmetic sideband sum over U_2,f2)0.080.08±0.0001-8.05e-160.0 %
CumpleIEC 60268-32013(14.12.8.1 a)Difference-frequency distortion d_d,2 (over U_2,ref = 2 U_2,f2)0.030.03±0.00011.64e-140.0 %
CumpleIEC 60268-32013(14.12.8.1 b)Difference-frequency distortion d_d,3 (arithmetic product sum)0.040.04±0.00017.22e-150.0 %
CumpleIEC 60268-32013(14.12.10)Total difference-frequency distortion (8 kHz / 11.95 kHz tones)0.036055510.03605551±0.0001-2.16e-150.0 %
CumpleITU-R BS.468-4Table 1Weighting network response at the 6.3 kHz peak (14.12.11 network)12.2 dB12.2167 dB±0.05 dB0.0167 dB33 %
CumpleIEC 60268-32013(14.12.9)DIM of the 15 kHz / 3.15 kHz signal (Table 2, 9 products)0.1688190.168819±0.0001-1.56e-140.0 %
CumpleBendat & Piersol, Random Data4eH1 recovers a known first-order IIR gain at 1 kHz0.89540.8954±2%0.00003410.2 %
CumpleBendat & Piersol, Random Data4eOrdinary coherence = 1 for a noiseless LTI path11±0.001-3.41e-70.0 %
CumpleAES172015(6.4.2 / 5.2.7)Idle channel noise, 1 kHz -20 dBFS tone (CCIR-RMS -5.63 dB offset)-25.63 dB-25.63 dB±0.01 dB3.55e-15 dB0.0 %
CumpleAES172015(6.4.1)Dynamic range, full-scale reference over a -40 dBFS residual at 2 kHz40 dB40.38 dB±0.6 dB0.385 dB64 %
Calibrated spectral analysis (Bendat & Piersol)12/12
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBendat & Piersol, Random Data4eEq. (5.67)White-noise autospectral density = sigma^2/(fs/2)0.0009770.000982±3%0.00000517 %
CumpleBendat & Piersol, Random Data4eEq. (8.158)PSD random error = 1/sqrt(nd) (Monte Carlo, 100 seeded records)0.17680.1764±6%-0.00043.8 %
CumpleBendat & Piersol, Random Data4eEq. (8.163)95% chi-square confidence interval coverage (Monte Carlo)0.950.94±0.025-0.0140 %
CumpleBendat & Piersol, Random Data4eEqs. (9.55)/(6.39)Coherent output spectrum of a known-SNR path: gamma^2 = SNR/(1+SNR)0.71910.7255±0.030.006421 %
CumpleClosed-form power-law slope (10*lg(2) dB/octave per unit exponent)Pink-noise PSD slope over 20 Hz - 20 kHz, dB/octave-3.0103 dB/oct-3.0116 dB/oct±0.05 dB/oct-0.0013 dB/oct2.6 %
CumpleIEC 60268-11985Clause A2.1 / Table AII5 ms burst of 5 kHz tone at 48 kHz: gate RMS = A/sqrt(2) (integral periods)0.7071070.707107±1.00e-12-1.11e-160.0 %
CumpleHarris1978closed form (DFT-even Hann)Hann window ENBW = n*sum(w^2)/sum(w)^2 = 3/2 exactly1.51.5±1.00e-1200.0 %
CumpleConstant-power 1/n-octave kernel (closed form)1/3-octave smoothed line level = P*df/(f0*(2^(1/6)-2^(-1/6)))0.0215920.021592±1e-7%-1.39e-170.0 %
CumplePercival & Walden1993Table 382Slepian taper concentration lambda_14(31, 8/31), quadruple-precision table0.929438220820.92943822082±0.000000000001-4.44e-160.0 %
CumplePercival & Walden1993Section 7.2 / Eq. (333)Multitaper white-noise density = sigma^2/(fs/2), NW=4, K=7 tapers0.0009770.000963±3%-0.00001448 %
CumplePercival & Walden1993Eq. (369a) tone calibrationMultitaper 'spectrum' scaling reads a sinusoid peak at A^2/24.54.500003±0.01%0.0000030.7 %
CumplePercival & Walden1993Eq. (370b)Adaptive multitaper dof -> 2K on white noise (weights -> uniform)1413.9847±2%-0.01535.5 %
Multiple-input coherence (Bendat & Piersol)5/5
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBendat & Piersol, Random Data4eProblem 7.2 / Eqs. (7.86)/(7.94)Conditioned coherent output of the 2nd input abs(G2y.1)^2/G22.1 = 4/3 exactly1.3333333331.333333333±1.00e-122.22e-160.0 %
CumpleBendat & Piersol, Random Data4eProblem 7.2 / Eqs. (7.87)/(7.116)Partial coherence gamma^2_2y.1 = 2/15 and multiple coherence = 0.70.70.7±1.00e-1200.0 %
CumpleBendat & Piersol, Random Data4eEq. (7.35) with Eqs. (6.40)/(6.41)Multiple coherence of a known-SNR system: gamma^2_{y:x} = SNR/(1+SNR)0.88890.8913±0.030.00248.0 %
CumpleBendat & Piersol, Random Data4eEq. (7.117)Uncorrelated inputs: multiple coherence = sum of ordinary coherences0-0.0098±0.02-0.009849 %
CumpleBendat & Piersol, Random Data4eEqs. (7.88)/(7.121)Output-power decomposition Gyy = sum of Gvi + Gnn (exact)04.34e-19±0.0000000000014.34e-190.0 %
Time-frequency analysis (Bendat & Piersol)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBendat & Piersol, Random Data4eEq. (12.173)Spectrogram of an on-bin tone reads its mean square A^2/2 in every column22±1e-7%8.35e-140.0 %
CumpleParseval + COLA identity (Hann taper, 75% overlap)Time-integrated STFT power = time-domain energy of an interior burst0.2361510.236151±1e-10%2.78e-170.0 %
CumpleBendat & Piersol, Random Data4eEqs. (11.128)-(11.130)Zoom FFT tone amplitude = demodulate-decimate-DFT chain, machine precision0.70.7±1e-10%4.22e-150.6 %
Correlation, time delay and envelope (B&P / Knapp & Carter)7/7
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBendat & Piersol, Random Data4eEq. (5.21)Cross-correlation peak of a 16-sample pure delay, samples1616±0.001-0.000005040.5 %
CumpleKnapp & Carter1976Table I (PHAT) + sub-sample interpolationGCC-PHAT estimate of an exact 12.25-sample fractional delay, samples12.2512.2483±0.005-0.001734 %
CumpleBendat & Piersol, Random Data4eEq. (5.101)Cross-spectrum phase-slope estimate of the same fractional delay12.2512.2498±0.001-0.000220 %
CumpleBendat & Piersol, Random Data4eEq. (8.120)BLWN autocorrelation coefficient at 3 samples vs sin(2piBt)/(2piBt)-0.1559-0.1666±0.02-0.010753 %
CumpleBendat & Piersol, Random Data4eExample 8.5Random error of the correlation peak: B=100 Hz, T=5 s, M/S=N/S=100.350.3493±0.001-0.000770 %
CumpleBendat & Piersol, Random Data4eTable 13.1Hilbert transform of cos recovers sin: max interior error06.16e-11±1.00e-96.16e-116.2 %
CumpleBendat & Piersol, Random Data4eEq. (13.27)Envelope of an AM waveform recovers 1 + m*cos(2pi*fm*t) exactly01.23e-12±1.00e-91.23e-120.1 %
Cepstrum, liftering and envelope spectrum (Havelock / B&P)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleHavelock2008Ch. 27 Fig. 21 + Mercator series of ln(1+a*e^{-j*theta})Power-cepstrum height at the echo delay = reflection coefficient a0.40.4±1.00e-105.55e-170.0 %
CumpleHavelock2008Ch. 87 Eq. (14): complex cepstrum, series term n = 2Second rahmonic of a reflection a = 0.4 equals -a^2/2-0.08-0.08±1.00e-10-1.39e-170.0 %
CumpleBendat & Piersol, Random Data4eSec. 13.3 (Fig. 13.11)Envelope-spectrum line of an AM tone (A0 = 2, m = 0.35) at fm0.70.7±0.002-1.89e-150.0 %
Time synchronous averaging (McFadden 1987)5/5
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleMcFadden1987Eq. 8 / Eq. 9: comb filter \|C(f)\| at a harmonic k/TComb-filter tooth height at a harmonic equals unity (any N)11±1.00e-1000.0 %
CumpleMcFadden1987Eq. 8: comb filter one quarter-order from a tooth, N = 2Comb-filter magnitude = 1/sqrt(2) at order 0.250.707106780.70710678±1.00e-101.11e-160.0 %
CumpleMcFadden1987Sec. 4 (Fig. 5): node selection, tone at 32.05 ordersN = 20 places a comb node on 32.05 orders (\|C\| = 0), not the power-of-2 N = 3206.48e-14±0.00000000016.48e-140.1 %
CumpleMcFadden1987Eq. 5: exact recovery, integer samples per periodNoiseless periodic waveform (M = 256) recovered to machine precision08.88e-16±0.00000000018.88e-160.0 %
CumpleMcFadden1987Sec. 1: asynchronous-noise variance reduced by 1/NResidual noise std of the average falls as sigma/sqrt(N), N = 640.1250.12414±15%-0.000864.6 %
Data qualification and Rice statistics (Bendat & Piersol)8/8
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBendat & Piersol, Random Data4eExample 4.4Reverse arrangements of the 20-observation sequence8686±000.0 %
CumpleBendat & Piersol, Random Data4eTable A.6Lower percentage point A(20; 0.975) at alpha = 0.056464±000.0 %
CumpleBendat & Piersol, Random Data4eTable A.6Upper percentage point A(20; 0.025) at alpha = 0.05125125±000.0 %
CumpleWald & Wolfowitz1940exact run distributionRuns acceptance region for n1 = n2 = 10, alpha = 0.05: lower point66±000.0 %
CumpleWald & Wolfowitz1940exact run distributionRuns acceptance region for n1 = n2 = 10, alpha = 0.05: upper point1515±000.0 %
CumpleBendat & Piersol, Random Data4eExample 5.13 / Eq. (5.195)Zero-crossing rate of bandlimited noise (fc = 1 kHz, B = 400 Hz)20132013±1%-0.5512.7 %
CumpleBendat & Piersol, Random Data4eExample 5.12Apparent frequency of low-pass noise (B = 2 kHz) = 0.577 B11551159±1%3.91134 %
CumpleBendat & Piersol, Random Data4eExample 5.14 / Eq. (5.206)Prob[positive peak > 4 sigma] of a narrow bandwidth record0.0003350.000334±0.00001-0.00000110.0 %
Underwater acoustics (ISO 18405/17208/18406)6/6
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleISO 184052017/ ISO 18406 Formula 7Sound pressure level of a synthetic tone, dB re 1 µPa123.0103123.0103±0.000100.0 %
CumpleISO 184052017/ ISO 18406 Formulae 3-4Sound exposure level of a 2 s tone, dB re 1 µPa²·s120120±0.00100.0 %
CumpleISO 184062017(6.4.2.1.3)Peak sound pressure level of a known waveform, dB re 1 µPa129.5424129.5424±0.000100.0 %
CumpleISO 17208-12016Radiated noise level from RMS pressure and distance, dB re 1 µPa·m46.020646.0206±0.000100.0 %
CumpleISO 17208-22019(Formula 3)Lloyd's-mirror surface correction ΔL at a known k·d_s-3.5211-3.5211±0.000100.0 %
CumpleISO 184062017(Formulae 8-9)Cumulative SEL of N identical strikes = SEL_ss + 10·lg(N)196.9897196.9897±0.0000010000.0 %
Underwater sound propagation (propagation loss)16/16
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleMackenzie(1981)nine-term equationSpeed of sound at 25 °C, 35 ‰, 1000 m (canonical check value), m/s1550.744 m/s1550.744 m/s±0.01 m/s0.0000275 m/s0.3 %
CumpleUNESCO/Chen-Millerovs MackenzieSound-speed agreement at 10 °C, 35 ‰, 1000 m (cross-model), m/s1506.264 m/s1506.524 m/s±1 m/s0.261 m/s26 %
CumpleDel Grosso(1974)vs MackenzieSound-speed agreement at 10 °C, 35 ‰, 1000 m (cross-model), m/s1506.264 m/s1506.313 m/s±1 m/s0.049 m/s4.9 %
CumpleSpherical spreading 20·lg(R)Geometrical spreading loss at R = 1000 m, dB60 dB60 dB±1.00e-9 dB0 dB0.0 %
CumpleThorp(1967)absorptionVolume absorption α at 10 kHz (cold deep water), dB/km1.1498 dB/km1.1498 dB/km±0.00000100 dB/km0 dB/km0.0 %
CumpleAinslie-McColm(1998)vs Francois-Garrison (1982)Absorption agreement at 10 kHz, 10 °C, 35 ‰, 0 m, pH 8, dB/km0.9626 dB/km0.9866 dB/km±0.0963 dB/km0.0239 dB/km25 %
CumpleFrancois-Garrison(1982)Part II Table IVAbsorption α at 100 kHz, 10 °C, 35 ‰, 0 m, pH 8 (printed value), dB/km33.6 dB/km33.63 dB/km±0.05 dB/km0.03 dB/km60 %
CumpleDel Grosso refit (Wong-Zhu1995Table IV)c(t90 = 20 °C, S = 35, P = 500 bar) vs the printed check table, m/s1603.679 m/s1603.679 m/s±0.001 m/s0.000444 m/s44 %
CumpleWales-Heitmeyer(2002)ensemble spectrumMerchant-ship source PSD at 100 Hz (printed equation), dB re 1 µPa²/Hz158.45 dB158.45 dB±0.001 dB0.0000117 dB1.2 %
CumplePassive sonar equation (Urick/Etter)Figure of merit SL − (NL − DI) − DT, dB85 dB85 dB±1.00e-9 dB0 dB0.0 %
CumpleSeabed reflection (Rayleigh, normal incidence)Bottom loss at 90° grazing, sand ρ=1900 c=1650 over water, dB9.0506 dB9.0506 dB±0.00000100 dB0 dB0.0 %
CumpleWenz wind noise (rule of fives)Wind spectrum level at 1 kHz, 5 kn (canonical anchor), dB re 1 µPa²/Hz51.0206 dB51.0206 dB±0.0001 dB-8.67e-8 dB0.1 %
CumpleMellen thermal noiseThermal spectrum level at 50 kHz, 16.85 °C (physical), dB re 1 µPa²/Hz19.3426 dB19.3426 dB±0.00000100 dB0 dB0.0 %
CumpleJOMOPANS-ECHO ship source levelBulker V=13.5 kn L=211 m band level at 1 kHz (File S1 oracle), dB re 1 µPa m161.394 dB161.394 dB±0.01 dB-0.000290 dB2.9 %
CumpleUNESCOsound speed (EOS-80 canonical value)SVEL(S = 40, T68 = 40 °C, P = 1000 bar) vs Fofonoff & Millard 1983, m/s1731.995 m/s1732.004 m/s±0.02 m/s0.009 m/s45 %
CumpleMedwin(1975)sound speed (Ainslie Eqs. 1.2-1.4)∂c/∂T at 10 °C, neglecting the bracketed terms, m/s per °C3.5 m/s per °C3.5 m/s per °C±0.001 m/s per °C-8.03e-9 m/s per °C0.0 %
Underwater propagation regimes (Weston flux theory)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleAinslie(2010)Table 9.1, medium sandReflection loss gradient η from Equation (9.51), Np/rad0.28 Np/rad0.278 Np/rad±0.005 Np/rad-0.002 Np/rad40 %
CumpleAinslie(2010)Table 9.1, mudReflection loss gradient η from Equation (9.53) at 1 Hz, Np/rad0.021 Np/rad0.02073 Np/rad±0.0005 Np/rad-0.00027 Np/rad54 %
CumpleWeston cylindrical spreading vs normal modesRange-averaged PL in an ideal 100 m waveguide at 100 Hz, 20-30 km, dB58.949 dB58.399 dB±1 dB-0.55 dB55 %
Marine-mammal auditory weighting (NMFS / Southall)4/4
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleNMFS(2018)Appendix D worked exampleWeighting factor adjustment W(1 kHz) for high-frequency cetaceans, dB-37.55 dB-37.545 dB±0.01 dB0.005 dB50 %
CumpleNMFS(2024)v3.0 Table 5, otariid CC recomputed as the peak of W(f) for the OW row (printed 1.37, corrected 1.36), dB1.3643 dB1.3643 dB±0.0005 dB-0.0000114 dB2.3 %
CumpleAinslie(2010)Equation (11.159), orca audiogramHearing threshold at 50 kHz (third branch), dB re 1 µPa51.2 dB51.199 dB±0.05 dB-0.001 dB2.0 %
CumpleAinslie(2010)§11.4.6, orca versus salmonNoise-limited figure of merit (SL + TS − NL + AG − DT)/2, dB re m²51 dB51 dB±0.00000100 dB-7.11e-15 dB0.0 %
Underwater numerical propagation (modes / rays / PE)5/5
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleNormal modes vs ideal waveguideFundamental horizontal wavenumber kr1 at 20 Hz, 100 m (analytic), rad/m0.077662 rad/m0.077662 rad/m±0.0001 rad/m8.19e-9 rad/m0.0 %
CumpleNormal modes vs image-source oracleAbsolute PL at 1 km in the ideal waveguide (converged image sum), dB48.238 dB48.239 dB±0.02 dB0.001 dB5.0 %
CumpleRay tracing vs linear gradientTurning depth of a 10° ray, c = 1500 + 0.05z (circular arc), m462.8 m462.8 m±1 m-4.74e-7 m0.0 %
CumpleRay travel time vs iso-gradient closed formTravel time of a 10° ray at 10 km, c = 1500 + 0.05z (Medwin & Clay Eq. 3.3.20), s6.625942 s6.625942 s±0.000001 s3.55e-15 s0.0 %
CumpleParabolic equation vs free fieldPE propagation loss at 2 km, homogeneous medium (spherical spreading), dB66.021 dB66.021 dB±0.1 dB0.0000140 dB0.0 %
Sonar processing gain and detection (Ainslie 2010)4/4
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleAinslie(2010)Sect. 6.1.2.1, printed folio 267Line-array DI at broadside, high-frequency limit 10 log10(2L/lambda), dB23.01 dB23.015 dB±0.01 dB0.004 dB40 %
CumpleAinslie(2010)Sect. 6.1.2.1, printed folio 267Line-array DI at endfire, where the footprint halves: 10 log10(4L/lambda), dB26.021 dB26.023 dB±0.01 dB0.002 dB20 %
CumpleAinslie(2010)Eq. (11.20), Fig. 11.1Unsteered DI vs the book's own approximation 1 + G0 tanh(pi^2 G0/36) at 2L/lambda = 2013.22 dB13.05 dB±0.5 dB-0.168 dB34 %
CumpleAinslie(2010)Eq. (11.22), printed folio 581Detection threshold at 50 % detection probability, p_fa = 1e-4, dB10.0947 dB10.0947 dB±1.00e-9 dB0 dB0.0 %
Aircraft noise (ICAO Annex 16 / IEC 61265)17/17
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleECAC Doc29 noise fraction (half path)Finite-segment correction ΔF for a perpendicular foot at the segment start, dB-3.0103 dB-3.0103 dB±0.001 dB-0.00000184 dB0.2 %
CumpleECAC Doc29 single-event chainSEL of a long level flyover vs the infinite-path limit LE∞ + ΔI − Λ, dB83.444 dB83.444 dB±0.01 dB-6.57e-8 dB0.0 %
CumpleECAC Doc29 impedance adjustment (standard atmosphere)Acoustic-impedance adjustment of NPD data at 15 °C / 101.325 kPa (Eq. 4-6/4-7), dB0.074 dB0.0741 dB±0.0005 dB0.0001 dB20 %
CumpleECAC Doc29 reference workbook (segment Λ)Lateral attenuation of a climbing segment vs the ECAC Vol 3 Part 1 workbook, dB6.3769 dB6.3769 dB±0.01 dB3.81e-11 dB0.0 %
CumpleECAC Doc29 start-of-roll directivity (jet)ΔSOR behind a takeoff ground-roll segment vs the Vol 3 Part 1 workbook, dB0.3196 dB0.3196 dB±0.01 dB-0.0000272 dB0.3 %
CumpleECAC Doc29 start-of-roll directivity (turboprop)ΔSOR behind a takeoff ground-roll segment (turboprop, Eq. 4-24b), dB1.0943 dB1.0944 dB±0.01 dB0.0001 dB1.0 %
CumpleECAC Doc29 workbook event assembly (JETFDS/R03, behind SOR)Energy sum of the reference per-segment SELs vs the B-1 event total, dB74.73 dB74.733 dB±0.01 dB0.003 dB30 %
CumpleSAE ARP5534 band-attenuation continuitySAE-Method δ_B at the 150 dB branch split (Eq. 7 vs Eq. 8), dB123.95 dB123.953 dB±0.01 dB0.003 dB30 %
CumpleEASA ANPdatabase round-tripInterpolated NPD level at a tabulated node vs the published ANP value, dB98.8 dB98.8 dB±1.00e-9 dB0 dB0.0 %
CumpleECAC Doc29 NPD interpolationLog-linear NPD level at the log-midpoint distance (Eq. 4-4), dB97 dB97 dB±1.00e-9 dB0 dB0.0 %
CumpleSAE ARP5534 pure-tone coefficient (ISO 9613-1)Mid-band α at 1 kHz, 25 °C, 70 % RH, 101.325 kPa, dB/m0.006186 dB/m0.006186 dB/m±1.00e-9 dB/m0 dB/m0.0 %
CumpleICAO Annex16 Vol. I App. 2 Table A2-3Perceived noisiness at SPL(b), 1 kHz band, in noys11±0.0000010000.0 %
CumpleICAO Doc9501 ETM Vol. I Table 3-7Tone correction of the turbofan example, dB22±0.00000100-4.66e-150.0 %
CumpleICAO Doc9501 ETM Vol. I Table 4-4Integrated-method reference EPNL, EPNdB92.619 EPNdB92.619 EPNdB±0.01 EPNdB0.00000142 EPNdB0.0 %
CumpleIEC 612651995Table 1Directional-response tolerance at 4 kHz / 90°, dB2 dB2 dB±1.00e-9 dB0 dB0.0 %
CumpleECAC Doc29 Appendix B take-off ground rollEquivalent take-off distance of reference case 6 (Eq. B-15/B-16), ft4897.5 ft4897.5 ft±0.1 ft0.036 ft72 %
CumpleECAC Doc29 Appendix B approach thrustCorrected net thrust at the top of reference case 2A (Eq. B-40/B-48), lb533.1 lb533.1 lb±0.1 lb0.035 lb70 %
Rotorcraft noise (ECAC Doc 32 / NORAH2)14/14
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleECAC Doc32 atmospheric attenuation (Table 4)ΔLa over a 1 km excess path at 1 kHz vs the NORAH2 guidance Table 4, dB6.3 dB6.186 dB±0.2 dB-0.114 dB57 %
CumpleECAC Doc32 spherical spreadingΔLs at ten times the 60 m hemisphere reference distance (Eq. 24), dB-20 dB-20 dB±1.00e-9 dB0 dB0.0 %
CumpleECAC Doc32 ground effect (rigid limit)ΔLg over a rigid surface at grazing incidence tends to +6 dB (Eq. 29), dB6 dB6 dB±1 dB0.002 dB0.2 %
CumpleECAC Doc32 propagation chain (NORAH2 prototype)LA of a single-hemisphere emission vs the NORAH2 prototype single-event history (R22 approach, 223.66 m slant), dB(A)55.87 dBA55.886 dBA±0.1 dBA0.016 dBA16 %
CumpleNORAH2 guidance§A.3.5 ring derivation (constant φ)Hemisphere rim bin (φ, θ) = (+90°, 150°) vs the ring level at +150°, dB75 dB75 dB±1.00e-9 dB0 dB0.0 %
CumpleNORAH2 guidance§A.3.5 Table 3 (Approach 3 HOGE offset)Out-of-ground-hover minus in-ground-hover level of a derived bin, dB12 dB12 dB±1.00e-9 dB0 dB0.0 %
CumpleECAC Doc32 flight-condition interpolation (NORAH2 Eq. 8)Distance-scaled triangle blend of three uniform hemispheres, hand-checked, dB97.0367 dB97.0364 dB±0.001 dB-0.0003 dB30 %
CumpleECAC Doc32 flight-path kinematics (Eq. 17)Airspeed of a straight climbing track, 40 m/s ground speed at a 5° path angle, m/s40.15279 m/s40.15279 m/s±0.0001 m/s0.00001 m/s10 %
CumpleECAC Doc32 retarded time (Eq. 22)Recorded-time delay at 100 m slant distance, r/c with c = 346.1 m/s, s0.288934 s0.288934 s±0.00001 s-1.66e-7 s1.7 %
CumpleECAC Doc32 single event (Eq. 27)SEL − LASmax of a constant-speed level flyover, 10·lg(π·d/V) closed form, dB7.982 dB7.942 dB±0.1 dB-0.04 dB40 %
CumpleNORAH2 guidancemean ground plane (Eq. 36-40)Intercept of the plane fitted to a symmetric 20 m roofline, hand-checked, m10 m10 m±0.00000100 m3.55e-15 m0.0 %
CumpleNORAH2 guidancemean flow resistivity (Eq. 41)Log-average of equal 1e4 and 1e6 Pa·s/m2 halves, hand-checked, Pa·s/m2100000 Pa·s/m²100000 Pa·s/m²±0.00100 Pa·s/m²0 Pa·s/m²0.0 %
CumpleNORAH2 guidancediffraction at grazing (Eq. 42)Pure diffraction with the edge on the line of sight, 10·lg 3, dB4.7712 dB4.7712 dB±0.0001 dB0.0000125 dB13 %
CumpleNORAH2 guidancescreening path difference (§A.4.5)Rubber-band delta over a 40 m hill, hand-checked geometry, m4.2848 m4.2848 m±1.00e-9 m0 m0.0 %
CNOSSOS-EU road source (Directive 2002/49/EC Annex II)6/6
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleCIRCABC CNOSSOS-EUroad emission test setLine power of the 60 committed cases of the 4 875-case published test set, 8 octave bands each, dB re 1 pW/m<= 0.01 dB on 480 published band levels (60 cases)0.005 dB±0.01 dB0.005 dB50 %
CumpleDirective (EU)2021/1226 Annex pt (19)(a), Table F-1Rolling and propulsion coefficients, 5 categories x 4 rows x 8 bands160 coefficients identical160/160 coefficients±000.0 %
CumpleDirective (EU)2021/1226 Annex pt (19)(b), Table F-4Road-surface coefficients, 15 surfaces x 5 categories x (8 alpha + beta)675 stored coefficients identical675/675 stored coefficients±000.0 %
CumpleDirective (EU)2015/996 Appendix F, Tables F-2 and F-3Studded-tyre and junction coefficients, unchanged since 201536 coefficients identical36/36 coefficients±000.0 %
CumpleDirective (EU)2015/996 Annex II 2.2.4 / 2.2.11Sound power at v_ref = 70 km/h under reference conditions, dB re 1 pWexactly A_R,i,m and A_P,i,m0 dB±0 dB0 dB0.0 %
CumpleDirective (EU)2021/1226 Annex pt (8)(b)Octave-band A-weighting AWC_f,i prescribed by 2.5.5, dB8 values identical8/8 values±000.0 %
Wind-turbine noise (IEC 61400-11)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleIEC 61400-112012Formula 30Critical bandwidth about a 500 Hz tone, Hz117.255 Hz117.255 Hz±0.00000100 Hz0 Hz0.0 %
CumpleIEC 61400-112012Formula 26Apparent sound power level of a single band, dB re 1 pW148.5139 dB148.5139 dB±0.0001 dB0 dB0.0 %
CumpleIEC 61400-112012Formulae 31-34Tonal audibility of a synthetic clean tone, dB16.38 dB16.38 dB±0.06 dB-0.001 dB1.7 %
Porous & multilayer absorbers (Mechel / Bies / Cox & D'Antonio)20/20
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBies5eApp. D Table D.1 / Mechel 2e G.11 (2)Delany-Bazley normalised Zc at X = 0.1, real part1.32411.3241±1.00e-900.0 %
CumpleBies5eApp. D Table D.1 / Mechel 2e G.11 (2)Delany-Bazley normalised Zc at X = 0.1, imaginary part-0.4694-0.4694±1.00e-9-5.55e-170.0 %
CumpleMiki1990Eqs. (30)-(34)Miki normalised wavenumber at f/sigma = 0.1, real part1.45231.4523±1.00e-900.0 %
CumpleJohnson et al. 1987 / Cox & D'Antonio3eEq. (6.19)JCA static viscous limit j w rho_e -> sigma, Pa s/m220000 Pa·s/m²20000 Pa·s/m²±0.01%1.31e-9 Pa·s/m²0.0 %
CumpleMechel2eSect. D.3 Eq. (1)Hard-backed layer: TMM vs -j Zc cot(kd), max rel deviation06.99e-16±1.00e-106.99e-160.0 %
CumpleLossless-layer limit (Mechel2eSect. D.3-D.4)Air cavity over a rigid wall at lambda/4: alpha00±1.00e-1200.0 %
CumpleMechel2eSect. D.5Maximum statistical absorption of a locally reacting plane0.9510.951±0.0010.00022222 %
CumpleCox & D'Antonio3eEq. (7.9)Membrane resonance 60/sqrt(m d), m = 5 kg/m2, d = 5 cm, Hz120 Hz119.85 Hz±2%-0.15 Hz6.3 %
CumpleMaa 1998 Fig. 5 / Cox & D'Antonio3eFig. 7.28Microperforated panel (d=t=0.2 mm, b=2.5 mm, D=6 cm): peak alpha0.950.956±0.050.00612 %
CumpleMaa1998Eqs. (5a)/(10)MPP peak absorption vs 4r/(1+r)^2 with Maa's printed resistance4r/(1+r)^2 = 0.9490.956±0.020.00735 %
CumpleAllard & Atalla2eSect. 11.3.4 (Eq. 6.90), Table 6.1 glass woolZwikker-Kosten decoupling frequency Fd, Hz43.27 Hz43.271 Hz±0.005 Hz0.001 Hz20 %
CumpleAllard & Atalla2eEq. (11.55), printed p. 253 (prose limit)Limp effective density at DC = apparent total density rho_t, kg/m331.1809 kg/m³31.1809 kg/m³±0.01%-1.72e-11 kg/m³0.0 %
CumpleAllard & Atalla2eEq. (11.55), printed p. 253 (prose limit)Heavy frame recovers the rigid-frame Zc (relative deviation)03.98e-11±0.000013.98e-110.0 %
CumpleAllard & Atalla2eprinted p. 254 (Doutres et al. 2007)Limp-frame bulk-modulus limit for air, kPa20 kPa20.27 kPa±0.3 kPa0.265 kPa88 %
CumpleAllard & Atalla2eEq. (6.110), Table 6.1 glass woolFrame lambda/4 resonance of a 10 cm layer, Hz459.9 Hz459.93 Hz±0.05 Hz0.033 Hz66 %
CumpleAllard & Atalla2eSect. 6.5.4 (Biot model output), pp. 124-125Airborne compressional branch changes root at 495 Hz495 Hz495.9 Hz±1%0.9 Hz18 %
CumpleAllard & Atalla2eSect. 6.5.4 (Biot model output), pp. 124-125Frame-borne velocity ratio Re(mu_b) at 1500 Hz (see ERRATA)0.820.811±2%-0.00955 %
CumpleAllard & Atalla2eSect. 6.6.3 (Biot model output), p. 129Surface-impedance peak of a 5,6 cm layer, Hz860 Hz863.5 Hz±2%3.5 Hz20 %
CumpleAllard & Atalla2eSect. 11.3.4 (rigid-frame limit)Stiff, heavy frame recovers the JCA layer (max rel deviation)00.0000000034±0.00000010.00000000343.4 %
CumpleAllard & Atalla2eEq. (6.107) vs Sect. 11.5 assemblyTwo independent derivations of Zs (max rel deviation)08.93e-16±0.00000000018.93e-160.0 %
Slow-sound perfect absorbers (Jimenez et al. Appl. Sci. 2017)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleJimenez et al. Appl. Sci.2017Eq. (9)Critical coupling: alpha at the design frequency (300 Hz, normal)11±0.00100.0 %
CumplePoiseuille limit (Stinson1991)Slit: j w rho_s -> 12 eta / h^2 as w -> 0 (h = 1.2 mm)153.3 Pa·s/m²153.3 Pa·s/m²±0.1%6.41e-7 Pa·s/m²0.0 %
CumplePoiseuille limit (Stinson1991)Square duct: j w rho -> 28.454 eta / w^2 as w -> 0 (w = 3 mm)58.2 Pa·s/m²58.2 Pa·s/m²±0.2%0.000409 Pa·s/m²0.4 %
Program loudness (ITU-R BS.1770 / EBU R 128)8/8
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleITU-R BS.1770-5Annex 1997 Hz sine at 0 dB FS on the left channel, LKFS-3.01 LKFS-3.01 LKFS±0.01 LKFS-0.000280 LKFS2.8 %
CumpleEBU Tech3341:2023 Table 1 case 1Integrated loudness of the -23 dBFS stereo sine, LUFS-23 LUFS-22.99 LUFS±0.1 LUFS0.007 LUFS7.0 %
CumpleEBU Tech3341:2023 Table 1 case 5Gated integrated loudness of the -26/-20/-26 dBFS steps, LUFS-23 LUFS-22.98 LUFS±0.1 LUFS0.021 LUFS21 %
CumpleEBU Tech3341:2023 Table 1 case 6Integrated loudness of the 5.0-channel sine (Table 3 weights), LUFS-23 LUFS-23.02 LUFS±0.1 LUFS-0.016 LUFS16 %
CumpleEBU Tech3341:2023 Table 1 case 15True-peak level of the fs/4 sine at 0.5 FFS, dBTP-6 dBTP (+0.2/-0.4 dB)-6.02 dBTP[-0.4, 0.2] dBTP-0.015 dBTP28 %
CumpleEBU Tech3341:2023 Table 1 case 19True-peak level of the fs/4 sine at 1.41 FFS, dBTP3 dBTP (+0.2/-0.4 dB)3 dBTP[-0.4, 0.2] dBTP0.001 dBTP34 %
CumpleEBU Tech3342:2023 Table 1 case 1Loudness range of the -20/-30 dBFS tone steps, LU10 LU10 LU±1 LU-3.17e-10 LU0.0 %
CumpleEBU Tech3342:2023 Table 1 case 3Loudness range of the -40/-20 dBFS tone steps, LU20 LU20 LU±1 LU2.39e-11 LU0.0 %
Quasi-peak meter (ITU-R BS.468-4)12/12
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleITU-R BS.468-4Table 2Single 1 ms 5 kHz burst (5 periods), % of the steady reading13.5 to 21.4 %16.85 %-+1.928 dB-
CumpleITU-R BS.468-4Table 2Single 2 ms 5 kHz burst (10 periods), % of the steady reading22.4 to 31.6 %26.72 %-+1.458 dB-
CumpleITU-R BS.468-4Table 2Single 5 ms 5 kHz burst (25 periods), % of the steady reading34 to 46 %40.29 %-+1.151 dB-
CumpleITU-R BS.468-4Table 2Single 10 ms 5 kHz burst (50 periods), % of the steady reading41 to 55 %47.73 %-+1.231 dB-
CumpleITU-R BS.468-4Table 2Single 20 ms 5 kHz burst (100 periods), % of the steady reading44 to 60 %52.58 %-+1.146 dB-
CumpleITU-R BS.468-4Table 2Single 50 ms 5 kHz burst (250 periods), % of the steady reading50 to 68 %58.78 %-+1.266 dB-
CumpleITU-R BS.468-4Table 2Single 100 ms 5 kHz burst (500 periods), % of the steady reading58 to 78 %66.98 %-+1.251 dB-
CumpleITU-R BS.468-4Table 2Single 200 ms 5 kHz burst (1000 periods), % of the steady reading68 to 92 %80.41 %-+1.170 dB-
CumpleITU-R BS.468-4Table 35 ms 5 kHz bursts at 2 per second, % of the steady reading43 to 53 %48.11 %-+0.840 dB-
CumpleITU-R BS.468-4Table 35 ms 5 kHz bursts at 10 per second, % of the steady reading72 to 82 %75.70 %-+0.435 dB-
CumpleITU-R BS.468-4Table 35 ms 5 kHz bursts at 100 per second, % of the steady reading94 to 100 %97.11 %-+0.255 dB-
CumpleITU-R BS.468-4clause 2.6Steady 1 kHz sine at 0.775 V r.m.s., dBqps0 dBqps-5.88e-14 dBqps±0.000001 dBqps-5.88e-14 dBqps0.0 %
Broadcast Wave metadata (EBU Tech 3285 / ITU-R BS.2088)14/14
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleEBU Tech3285:2011 (2.3)bext fixed part: every field at its cumulative offset, 602 bytes15 fields byte-identical at offsets 0..422, fixed part 602 B15/15 byte-identical, 602 B + CodingHistory---
CumpleEBU Tech3285:2011 (2.3)bext round trip: written metadata returns identically through the reader13 fields identical, CodingHistory extended13/13 identical, history extended---
CumpleEBU Tech3285:2011 (2.4)Loudness int16 = 100 x value, ties away from zero: negative examples-22.644 -> F728h (-2264), -22.645 -> F727h (-2265), -22.646 -> F727h (-2265)F728h (-2264), F727h (-2265), F727h (-2265)---
CumpleEBU Tech3285:2011 (2.4)Loudness int16 = 100 x value, ties away from zero: positive examples12.764 -> 04FCh (1276), 12.765 -> 04FDh (1277), 12.766 -> 04FDh (1277)04FCh (1276), 04FDh (1277), 04FDh (1277)---
CumpleEBU Tech3285:2011 (2.4)Unused loudness parameters: 7FFFh on disk, None through the reader7FFFh x 5 on disk; None x 5 reread7FFFh, 7FFFh, 7FFFh, 7FFFh, 7FFFh; None x 5---
CumpleEBU Tech3285:2011 (2.4)Out-of-range loudness clamps to 7FFEh/8000h, never the 7FFFh sentinel327.9 -> 7FFEh (not the sentinel); -inf -> 8000h7FFEh; 8000h---
CumpleEBU Tech3285:2011 (2.3)TimeReference: 64-bit first-sample count split low/high at 338/342low 370632704 @ 338, high 1 @ 342 (13:30:00 at 96 kHz = 4665600000 samples)low 370632704, high 1 -> 4665600000 samples, reread equal---
CumpleEBU Tech3285:2011 (2.3): CodingHistory row per EBU R 98 Appendix 1Appended row is A=PCM,F=48000,W=16,M=stereo,T=... + CR/LF (Example 1)A=PCM,F=48000,W=16,M=stereo,T=(free text, no commas) + CR/LFA=PCM,F=48000,W=16,M=stereo,T=(free text) + CR/LF---
CumpleEBU Tech3285:2011 (2.3): CodingHistory row per EBU R 98 Appendix 1Prior coding row preserved verbatim, new row added beneath it2 rows: Example 2's A/D row intact above, the writer's beneath2 rows, prior row byte-identical---
CumpleEBU Tech3285:2011 (1.1/2.3)UMID exists from v1 (64 of the 254 reserved bytes): v0 refused, v1 at 348v0+UMID refused; v1: Version=0001h, UMID verbatim at 348v0 refused; v1: Version=0001h, UMID verbatim---
CumpleEBU Tech3285:2011 (1.1/2.3)Loudness exists from v2 (10 of the 190 reserved bytes): v1 refused/zeroedv1+loudness refused; v1 writes 10 zero bytes, reads None; v2 carriesv1 refused; bytes zeroed, None reread, v2 carries---
CumpleITU-R BS.2088-2Annex 1 (4.1/4.2)ds64 first after WAVE: bw64Size/dataSize u64 pairs at 0/8, table at 24ds64 first, >= 28 B: riffSize 24883200072, dataSize 24883200000, tableLength 0ds64 @ 12, 28 B: riffSize 24883200072, dataSize 24883200000, tableLength 0---
CumpleITU-R BS.2088-2Annex 1 (3.2/2.4)Promoted header: FFFFFFFFh sentinel in the outer and data size fieldsouter size = data size = FFFFFFFFh, form type WAVEouter FFFFFFFFh, data FFFFFFFFh, WAVE---
CumpleITU-R BS.2088-2Annex 1 (2.4/3.1)Reader resolves the data size through ds64; BW64 and RF64 fourccs alikeRF64: 48 frames, BW64: 48 frames (via ds64 dataSize = 96 B)RF64 read as RF64, 48 frames; BW64 read as BW64, 48 frames---
2D FDTD wave simulation (Attenborough & Van Renterghem 2021, Ch. 4)4/4
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleRigid rectangular box eigenfrequencyMode (1,1) of a 1.0 x 0.7 m rigid box, f = (c/2)*sqrt(1/lx^2 + 1/ly^2), Hz299.06 Hz298.91 Hz±1.5 Hz-0.153 Hz10 %
CumpleFree-field pulse arrival delayProbe-to-probe delay of a pulse over 0.6 m of air, (r2 - r1)/c, ms1.749 ms1.756 ms±0.05 ms0.007 ms14 %
Cumple2D Kirchhoff-Helmholtz NTFF: monopole directivityFar-field pattern ripple of an enclosed line source, dB0 dB0.044 dB±0.2 dB0.044 dB22 %
Cumple2D Kirchhoff-Helmholtz NTFF: monopole levelNTFF far-field level vs the 2D Green function A sqrt(2/(pi k)), dB0 dB0.106 dB±0.3 dB0.106 dB35 %
Swept-sine distortion & phase utilities (Farina / Novak)7/7
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleFarina2000/ Novak et al. 2015 (Chebyshev identity)3rd-harmonic response H3 magnitude of a cubic polynomial, re a3/40.050.05001±0.00050.000012.0 %
CumpleNovak et al.2015JAES 63(10), Eqs. 18/49Synchronized-sweep phase of H3 (Chebyshev: -sin(3wt)), rad3.1416 rad3.1411 rad±0.005 rad-0.0005 rad10 %
CumpleFarina2000AES 108th Conv. (THD from one sweep)THD(1 kHz) of the polynomial vs sqrt((a2/2)^2+(a3/4)^2)/(1+3a3/4)0.061490.06159±0.0010.000110 %
CumpleFarina2000(distortion rejected from the linear IR)THD floor of a purely linear path (gain 0.5), max over 100-2000 Hz00.00033±0.0010.0003333 %
CumpleBendat & Piersol, Random Data4eSec. 13.1.4 (Hilbert relation)Min-phase reconstruction of a strictly min-phase biquad, max err, rad0 rad1.30e-15 rad±1.00e-9 rad1.30e-15 rad0.0 %
CumpleFirst-order allpass closed form (1-a^2)/(1+2a cos w+a^2)Group delay of the a = 0.5 allpass at w = pi/2, samples0.60.6±0.000017.53e-80.8 %
CumpleAll-pass decomposition of a pure latency (B&PSec. 13.1.4)Excess group delay of a biquad delayed 7.25 samples, samples7.257.25±0.000001001.84e-130.0 %
Spherical ground & barriers (Attenborough / Salomons / Bies)7/7
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleAttenborough2eEq. (2.40c) (spherical Q, hard-ground limit)abs(Q) as Z grows large (Rp -> 1 so (1 - Rp) -> 0 and Q -> 1)11±0.000001-2.82e-110.0 %
CumpleSalomons2001Sec. 3.4 (two-ray field over a rigid ground)dL enhancement at small path difference (constructive, +6 dB)6.0206 dB6.0205 dB±0.1 dB-0.0001 dB0.1 %
CumpleSalomons2001Eq. (D.59) (plane-wave Rp, grazing incidence)Re(Rp) at grazing (hs, hr -> 0, cos(theta) -> 0 so Rp -> -1)-1-1±0.0010.00004804.8 %
CumpleSalomons2001Fig. D.3 (grassland ground dip, sigma = 200 kPa s/m2)Minimum dL for hs = hr = 2 m, r = 100 m (dip near 395 Hz), dB-12.7 dB-12.72 dB±0.3 dB-0.022 dB7.3 %
CumpleBies5eEq. (5.138) (Kurze-Anderson, N -> 0)Barrier attenuation at the shadow boundary N = 05 dB5 dB±1.00e-9 dB0 dB0.0 %
CumpleBies5eEq. (5.138) (Kurze-Anderson, large-N slope)Delta(N=10) - Delta(N=1) vs the 10 lg(10) = 10 dB decade growth10 dB9.8845 dB±0.5 dB-0.1155 dB23 %
CumpleAttenborough2eEqs. (9.19)-(9.20) (rigid half-plane, shadow boundary)Exact thin-screen insertion loss at grazing (field halved, 6 dB)6.0206 dB5.7932 dB±0.6 dB-0.2274 dB38 %
Panel & aperture sound insulation (Bies / Hopkins / Cremer)17/17
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBies5eEq. 7.40 (mass law)6 dB per octave (500 -> 1000 Hz)6.0206 dB6.02 dB±0.01 dB-0.0006 dB6.0 %
CumpleBies5eEq. 7.40 (mass law)6 dB per doubling of mass6.0206 dB6.02 dB±0.01 dB-0.0006 dB6.0 %
CumpleBies5eEq. 7.42 (field incidence)One-third-octave correction 5.5 dB5.5 dB5.5 dB±0.001 dB0 dB0.0 %
CumpleHopkinsEq. 2.201 / Bies Eq. 7.3Coincidence frequency, 6 mm glass2079 Hz2107.3639 Hz±3%28.3639 Hz45 %
CumpleCremerTable 5.1Thin-plate point impedance Z = 8 sqrt(B' m'')2529.8221 N·s/m2529.8221 N·s/m±0.00000100 N·s/m0 N·s/m0.0 %
CumpleCremerTable 5.1Infinite-beam mobility phase -45 deg-45 deg-45 deg±0.00000100 deg0 deg0.0 %
CumpleHopkinsEq. 2.229 (Leppington/Maidanik)Radiation efficiency at f = 2 fc1.41421.4142±1.00e-92.22e-160.0 %
CumpleBiesEq. 7.62 / Hopkins Eq. 4.73Mass-air-mass resonance f0, empty cavity76.9484 Hz76.8521 Hz±0.5%-0.0962 Hz25 %
CumpleBiesEq. 7.64 (double wall)Below f0 = mass law of the combined mass11.6144 dB11.6144 dB±0.00000100 dB0 dB0.0 %
CumpleHopkinsEq. 4.92 (composite)1 % open area caps R at 10 lg(S/Sa)20 dB19.9996 dB±0.05 dB-0.0004 dB0.8 %
CumpleVigran Building AcousticsEq. (3.109), printed p. 96Flat 1 mm steel plate 1 m x 1 m, f(1,1)4.9 Hz4.93 Hz±0.05 Hz0.033 Hz66 %
CumpleVigranEqs. (3.113)/(3.115), printed p. 96Corrugated 1 mm steel plate (H = 10 mm, L = 100 mm), f(2,2)102 Hz102.09 Hz±0.1 Hz0.092 Hz92 %
CumpleBies5eEq. (7.59) / Vigran Eq. (6.112)Heckl coincidence-branch constant, dB (rho c = 414)-13.2 dB-13.217 dB±0.02 dB-0.017 dB85 %
CumpleBies5eEq. (7.60) / Vigran Eq. (6.112)Heckl recovery-branch constant, dB (rho c = 414)-23 dB-23.16 dB±0.2 dB-0.16 dB80 %
CumpleVigranEq. (6.111) / Bies Eq. (7.38)Orthotropic diffuse integral below fc1 vs its exact mass-law form6.287723 dB6.287723 dB±0.000001 dB-1.40e-8 dB1.4 %
CumpleHopkinsTable A2, printed p. 608h.fc products of 25 building-material rows, worst deviation0 m·Hz0.0476 m·Hz±0.06 m·Hz0.0476 m·Hz79 %
CumpleHopkinsEq. 4.99/4.101 (Gomperts slit)Transmission maximum at first resonance1544.9615 Hz1542.9615 Hz±15 Hz-2 Hz13 %
Bending-wave plate-junction transmission (Cremer / Craik / Hopkins)6/6
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleHopkinsEq. 5.12 (identical plates)X-junction corner tau12(0 deg) = 1/80.1250.125±1.00e-900.0 %
CumpleHopkinsEqs 5.12 + 5.6 (identical plates)X-junction corner angular average = 1/120.08330.0833±0.0000010000.0 %
CumpleHopkinsEqs 5.12 + 5.6 (identical plates)L-junction corner angular average = 1/30.33330.3333±0.0000010000.0 %
CumpleHopkinsEq. 5.14 (identical plates)In-line junction tau12(0 deg) = 111±1.00e-900.0 %
CumpleHopkinsEq. 5.7 (SEA consistency)X-junction reciprocity tau_bar_12 / tau_bar_21 = chi1.51.5±0.000001006.66e-160.0 %
CumpleHopkinsEq. 5.116 (identical plates, fc_j = f_ref)X-junction vibration reduction index = 10 lg(12)10.7918 dB10.7918 dB±0.00000100 dB0 dB0.0 %
Atmospheric refraction (Salomons rays / GFPE)3/3
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleSalomonsSec. 4.4 (ray turning height, linear profile)Turning height of a 10 deg ray vs Rc(1 - cos theta0) (circular arc), m26.457 m26.457 m±0.1 m-3.94e-7 m0.0 %
CumpleSalomonsEq. (3.4) (GFPE vs spherical-wave ground effect, homogeneous)PE relative level at 500 m over grassland vs Weyl-Van der Pol, dB-16.368 dB-16.402 dB±0.5 dB-0.035 dB7.0 %
CumpleSalomonsEq. (3.4) (GFPE hard ground vs two-ray, homogeneous)PE relative level at 500 m over a rigid ground vs the coherent two-ray, dB5.997 dB5.593 dB±0.6 dB-0.405 dB68 %
Electroacoustics9/9
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBeranek & Mellow2eEq. (13.117)Piston resistance R1(x) = 1 - 2 J1(x)/x at x = 2ka = 20.4232750.423275±0.000011.92e-71.9 %
CumpleBeranek & Mellow2eEq. (13.118)Piston reactance X1(x) = 2 H1(x)/x at x = 2ka = 20.6467640.646764±0.00001-2.72e-72.7 %
CumpleBeranek & Mellow2eEq. (13.117) (low-frequency limit)R1 -> (ka)^2/2 as ka -> 0 (x = 0.02, ka = 0.01)0.000050.00005±0.01%-8.33e-1017 %
CumpleBeranek & Mellow2eEq. (4.151)Radiation mass M = 8 rho a^3 / 3 (a = 0.1 m, rho = 1.206)0.003216 kg0.003216 kg±1.00e-9 kg0 kg0.0 %
CumpleBeranek & Mellow2eEq. (13.102), Table 14.1First directivity null at ka sin(theta) = 3.8317 (first zero of J1)0-4.87e-17±0.000001-4.87e-170.0 %
CumpleBeranek & Mellow2e§4.19 (half-space baffle)Directivity index DI -> 10 lg 2 = 3.01 dB as ka -> 03.0103 dB3.0103 dB±0.001 dB2.48e-7 dB0.0 %
CumpleLong, Architectural Acoustics2eEq. (18.21)Omnidirectional mic at Zs = -6 dB: L(H-M) <= L(H-L) - 4 dB76 dB76 dB±1.00e-9 dB0 dB0.0 %
CumpleLong, Architectural Acoustics2eEq. (18.22)Cardioid mic (DM = -2 dB) at Zs = -6 dB: L(H-M) <= L(H-L) - 2 dB78 dB78 dB±1.00e-9 dB0 dB0.0 %
CumpleLong, Architectural Acoustics2eEq. (18.23)Number-of-open-microphones correction 10 lg Nm at Nm = 46.0206 dB6.0206 dB±1.00e-12 dB0 dB0.0 %
Industrial noise control22/22
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleBies5eEq. (8.111)Expansion-chamber peak TL = 10 lg[1 + (1/4)(m - 1/m)^2], m = 4 at kL = pi/26.5472 dB6.5472 dB±0.00000100 dB0 dB0.0 %
CumpleBies5eEq. (8.111)Expansion-chamber trough TL = 0 at kL = pi (chamber transparent)0 dB0 dB±1.00e-9 dB0 dB0.0 %
CumpleBies5eEq. (8.44) / Example 8.1Quarter-wave tube tuning f = c/(4 l_e), l_e = 1.516 m -> 56.6 Hz56.6 Hz56.6 Hz±0.1 Hz0.003 Hz3.0 %
CumpleBies5eEq. (8.46)Helmholtz resonance f0 = (c/2pi) sqrt(S/(l_e V)) (S=1e-4, l_e=0.02, V=1e-3)122.067 Hz122.067 Hz±0.00000100 Hz0 Hz0.0 %
CumpleBies5eEq. (8.73)Side-branch TL = 20 lg abs(1 + rho c/(2 Sd Zb)) (QWT branch, closed form)0.1638 dB0.1638 dB±1.00e-9 dB8.33e-17 dB0.0 %
CumpleBies5eEqs. (8.141)/(8.148) (four-pole insertion loss)Insertion loss = transmission loss for the anechoic reference Zs=Zr=rho c/S6.2498 dB (= TL)6.2498 dB±1.00e-9 dB0 dB0.0 %
CumpleBies5eEq. (8.275) (Wells' plenum method)Plenum TL = -10 lg[S_out(cos0/pi r^2 + (1-a)/(Sw a))] (S_out=.1,r=1,Sw=20,a=.2)12.8541 dB12.8541 dB±0.00000100 dB0 dB0.0 %
CumpleBies5eTable 8.14 (ASHRAE end reflection, flush)Duct end reflection D = 200 mm at 125 Hz = 10 dB (table node)10 dB10 dB±0.00000100 dB0 dB0.0 %
CumpleLong2eEq. 13.1 with Table 13.5 (ASHRAE 1987 fan model)Forward-curved fan at Q_REF, P_REF, peak efficiency -> K_F + C_BFI at 500 Hz38 dB38 dB±1.00e-9 dB0 dB0.0 %
CumpleLong2eEq. 14.12 with Table 14.2 (Reynolds lined rectangular duct)18 x 12 in duct, 6 ft, 1 in lining at 1 kHz -> 1.77 (10/3)^0.695 6 dB24.5203 dB24.5203 dB±1.00e-9 dB3.55e-15 dB0.0 %
CumpleLong2eTable 14.4 (ASHRAE 1995 lined flexible duct)8 in diameter, 9 ft long -> 6/8/16/25/28/28/18 dB (table node)0 dB (max |diff| over the 7 bands)0 dB±1.00e-9 dB0 dB0.0 %
CumpleLong2eEq. 14.17 (branch power division)25 per cent split with area-matched branches -> -10 lg 0.25 = 6.02 dB6.0206 dB6.0206 dB±1.00e-9 dB0 dB0.0 %
CumpleLong2eTable 14.9 (worked duct-borne sheet, supply path)Fan to room, 8 octave bands -> 52/42/30/18/9/-2/-2/-1 dB at the receiver0 dB +/-1 (max |diff| over the 8 bands)1 dB±1 dB1 dB100 %
CumpleLong2eEqs. 13.27-13.33 (Reynolds diffuser self-noise)24 x 24 in rectangular diffuser, 312 cfm, 0.05 in pd -> the 33/32/29/23/15 dB row of Table 14.90 dB +/-1 (max |diff| over the five bands)0.8853 dB±1 dB0.8853 dB89 %
CumpleASHRAE 2019Applications Ch. 49 Table 9Max neck velocity of a supply outlet for design RC(30) -> 2.2 m/s2.2 m/s2.2 m/s±1.00e-9 m/s0 m/s0.0 %
CumpleNorton & Karczub2eEqs. 7.6/7.8/7.9 (problem 7.1 answer)254 mm duct, steam, 200 m/s: (1,0) cut-on 812 Hz and k_x = -8.23 1/m0 +/-1 (Hz, and 1/m x100)0.591±10.59159 %
CumpleNorton & Karczub2eEq. 7.10 (problem 7.2 answer)0.65 x 0.4 m duct, 15 m/s: first three cut-on 264 / 428 / 503 Hz0 Hz (max |diff| over the 3 modes)0 Hz±1.00e-9 Hz0 Hz0.0 %
CumpleBies5eEqs. (7.103), (7.111) (enclosure, fully absorbing limit)Enclosure correction C -> 10 lg 0.3 = -5.23 dB as alpha_i -> 1-5.2288 dB-5.2288 dB±0.001 dB0.0000174 dB1.7 %
CumpleNorton & Karczub2eEq. (4.101) (problem 4.21 answer)Double brick wall into an 8 x 9 x 3 m room -> NR 37.5/40.8/49.0/62.8/65.3/65.9 dB0 dB +/-0.05 (max |diff| over the 6 bands)0.0308 dB±0.05 dB0.0308 dB62 %
CumpleNorton & Karczub2e4.6/4.9 (problem 4.18 answer)Blower in a plant room to the operator room -> 72.3/60.4/41.4/41.0/33.8/30.7 dB0 dB +/-0.1 (max |diff| over the 6 bands)0.0682 dB±0.1 dB0.0682 dB68 %
CumpleNorton & Karczub2eEq. (4.115) (problem 4.16 answer)Lined compressor enclosure against NC-45 -> required TL 14.4/25.2/28.9/34.4/35.2/34.7/34.7/31.6 dB0 dB +/-0.15 (max |diff| over the 8 bands)0.1099 dB±0.15 dB0.1099 dB73 %
CumpleNorton & Karczub2eTable 4.5 (constant-volume source power)Source in the intersection of two flat surfaces (Q = 4) -> +10 lg 4 = 6.02 dB6.0206 dB6.0206 dB±1.00e-9 dB8.88e-16 dB0.0 %
HVAC noise (VDI 2081)57/57
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 63 Hz, dB90.4 dB90.41 dB±0.05 dB0.006 dB12 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 125 Hz, dB88.8 dB88.82 dB±0.05 dB0.022 dB44 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 250 Hz, dB86.3 dB86.32 dB±0.05 dB0.019 dB38 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 500 Hz, dB82.9 dB82.91 dB±0.05 dB0.01 dB20 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 1000 Hz, dB78.6 dB78.59 dB±0.05 dB-0.006 dB12 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 2000 Hz, dB73.4 dB73.37 dB±0.05 dB-0.027 dB54 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 4000 Hz, dB67.2 dB67.24 dB±0.05 dB0.045 dB90 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan sound power at 8000 Hz, dB60.2 dB60.21 dB±0.05 dB0.011 dB22 %
CumpleVDI 2081Blatt 1:2001 Eq. (13)Fan sound power level L_W4 from the duty, dB96 dB96.041 dB±0.05 dB0.041 dB82 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan total sound power level, dB94.1 dB94.124 dB±0.05 dB0.024 dB48 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 1Supply fan A-weighted sound power level, dB84.5 dB84.511 dB±0.05 dB0.011 dB22 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 5Rectangular duct 500 x 400 mm over 4 m, worst octave deviation, dB0 dB0 dB±0.00000100 dB0 dB0.0 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 13Round duct 160 mm over 1 m, worst octave deviation, dB0 dB0 dB±0.00000100 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Eq. (34)Limit frequency of a 160 mm round duct, Hz1245 Hz1245.2 Hz±0.5 Hz0.25 Hz50 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 14Round bend 160 mm, Table 7 shifted onto its limit frequency, worst octave deviation, dB0 dB0 dB±0.00000100 dB0 dB0.0 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction into 0.3 m2 of 1.08 m2 total, dB5.6 dB5.563 dB±0.05 dB-0.037 dB74 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 7Junction into 0.049 m2 of 0.147 m2 total, dB4.8 dB4.771 dB±0.05 dB-0.029 dB58 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 16Junction into 0.02 m2 of 0.04 m2 total, dB3 dB3.01 dB±0.05 dB0.01 dB20 %
CumpleVDI 2081Blatt 1:2001 Eq. (16)Flow noise of a straight duct, overall sound power level, dB38 dB38.31 dB±0.5 dB0.306 dB61 %
CumpleVDI 2081Blatt 1:2001 Eq. (17)Flow noise of a straight duct, A-weighted sound power level, dB22 dB21.62 dB±0.5 dB-0.376 dB75 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 63 Hz, dB39.1 dB39.09 dB±0.05 dB-0.011 dB22 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 125 Hz, dB33.5 dB33.53 dB±0.05 dB0.031 dB62 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 250 Hz, dB27.4 dB27.36 dB±0.05 dB-0.039 dB78 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 500 Hz, dB20.7 dB20.72 dB±0.05 dB0.021 dB42 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 1000 Hz, dB13.7 dB13.67 dB±0.05 dB-0.034 dB68 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 2000 Hz, dB6.2 dB6.24 dB±0.05 dB0.038 dB76 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 4000 Hz, dB-1.5 dB-1.53 dB±0.05 dB-0.028 dB56 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 3Junction flow noise at 8000 Hz, dB-9.6 dB-9.61 dB±0.05 dB-0.006 dB12 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 14Bend flow noise, worst octave deviation, dB0 dB0.0496 dB±0.05 dB0.0496 dB99 %
CumpleVDI 2081Blatt 1:2001 Eq. (49)Splitter silencer self-noise, A-weighted sound power level, dB52 dB52.099 dB±0.5 dB0.099 dB20 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 63 Hz, dB62.7 dB62.74 dB±0.05 dB0.036 dB72 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 125 Hz, dB58.3 dB58.26 dB±0.05 dB-0.038 dB76 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 250 Hz, dB53.7 dB53.72 dB±0.05 dB0.019 dB38 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 500 Hz, dB49.4 dB49.39 dB±0.05 dB-0.005 dB10.0 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 1000 Hz, dB45.4 dB45.43 dB±0.05 dB0.026 dB52 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 2000 Hz, dB41.9 dB41.85 dB±0.05 dB-0.046 dB92 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 4000 Hz, dB38.6 dB38.62 dB±0.05 dB0.017 dB34 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 2Splitter silencer self-noise at 8000 Hz, dB35.6 dB35.56 dB±0.05 dB-0.041 dB82 %
CumpleVDI 2081Blatt 2:2005 Table 2, element 18End reflection of a 200 mm nozzle in a ceiling, worst octave deviation, dB0 dB0.0449 dB±0.05 dB0.0449 dB90 %
CumpleVDI 2081Blatt 2:2005 Section 1.1Spectral assessment correction K_A, worst octave deviation, dB0 dB0 dB±1.00e-9 dB0 dB0.0 %
CumpleVDI 2081Blatt 2:2005 Table 1, elements 1 to 3Chained level after fan, silencer and junction, worst octave deviation, dB0 dB0.0719 dB±0.1 dB0.0719 dB72 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 20Room attenuation of a ceiling diffuser, worst octave deviation, dB0 dB0.0467 dB±0.05 dB0.0467 dB93 %
CumpleVDI 2081Blatt 1:2001 Eq. (36)Room attenuation of a hemispherical outlet, dB5.7 dB5.675 dB±0.05 dB-0.025 dB50 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 20Sound pressure level in room 102, worst octave deviation, dB0 dB0.4913 dB±0.5 dB0.4913 dB98 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 20Total sound pressure level in room 102, dB51.4 dB51.384 dB±0.05 dB-0.016 dB32 %
CumpleVDI 2081Blatt 2:2005 Table 1, element 20A-weighted sound pressure level in room 102, dB40 dB40.037 dB±0.05 dB0.037 dB74 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 0.05, dB7.4135 dB7.4135 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 0.1, dB4.8073 dB4.8073 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 0.2, dB2.5527 dB2.5527 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 0.5, dB0.5115 dB0.5115 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 1, dB0 dB0 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 2, dB0.5115 dB0.5115 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 5, dB2.5527 dB2.5527 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 7, dB3.5902 dB3.5902 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Reflection at a section change of ratio 10, dB4.8073 dB4.8073 dB±0.05 dB0 dB0.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3, Figure 26Bands a sudden increase still reflects in, of eight22±0.500.0 %
CumpleVDI 2081Blatt 1:2001 Section 6.3Ceiling VDI 3733 recommends for a section change, dB5 dB5 dB±0.05 dB0 dB0.0 %
CNOSSOS-EU railway source (Directive 2002/49/EC Annex II)8/8
EstadoNormaMagnitudEsperado (norma)CalculadoLímiteDesviaciónConsumido
CumpleCIRCABC CNOSSOS-EUrailway emission test setLine power of the 123 committed cases of the published test set, both source heights, 8 octave bands each, dB re 1 pW/m<= 0.01 dB on 984 published band levels (123 cases)0.0055 dB±0.01 dB0.0055 dB55 %
CumpleAppendix GTables G-1a and G-1b (roughness)Wheel roughness by brake type (3 x 32) and rail roughness by class (2 x 35), dB166 coefficients identical166/166 coefficients±000.0 %
CumpleDirective (EU)2021/1226 Annex pt (20)(b), Table G-2Contact filter A3 for 5 wheel load and diameter combinations x 35 wavelengths, dB175 coefficients identical175/175 coefficients±000.0 %
CumpleAppendix GTable G-3 (transfer functions)Track transfer (8 x 24), wheel transfer (4 x 24) and superstructure transfer (24), dB per axle312 coefficients identical312/312 coefficients±000.0 %
CumpleAppendix GTables G-4 to G-7Impact roughness (35), traction (5 x 2 x 24), aerodynamic (2 x 24) and bridge (2 x 24), dB371 coefficients identical371/371 coefficients±000.0 %
CumpleDirective 2002/49/ECAnnex II 2.3.2, formula (2.3.15)Horizontal dipole directivity along the track: 10 lg(0,01) at phi = 0-20 dB-20 dB±1.00e-12 dB0 dB0.0 %
CumpleDirective 2002/49/ECAnnex II 2.3.2, formulae (2.3.13) and (2.3.14)Aerodynamic speed law at v0 = 300 km/h reduces to Table G-6 verbatim50 lg 2 = 15.051 dB on every band1.07e-14 dB±1.00e-12 dB1.07e-14 dB1.1 %
CumpleDirective 2002/49/ECAnnex II 2.3.2, formula (2.3.12)Impact roughness at the tabulated joint density n_l = 0,01 per mTable G-4 verbatim0 dB±1.00e-12 dB0 dB0.0 %