metrology.frequencies

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Frequency calculation logic according to ANSI/IEC standards.

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getansifrequencies

getansifrequencies(
    fraction: float,
    limits: list[float] | None = None,
) -> tuple[list[float], list[float], list[float], list[str]]

nominal_frequencies(
    fraction: float,
    limits: list[float] | None = None,
) -> tuple[list[float], list[float], list[float], list[str]]

Calculate frequencies according to ANSI/IEC standards.

Parameters

Name	Description
`fraction`	Bandwidth fraction (e.g., 1, 3).
`limits`	[f_min, f_max] limits.

Returns: Tuple of (center_freqs, lower_edges, upper_edges, nominal_labels).

normalized_frequencies(fraction: int) -> list[float]

Get standardized IEC center frequencies.

Parameters

Name	Description
`fraction`	1 or 3 (Octave or 1/3 Octave).

Returns: List of standard frequencies.

normalizedfreq(fraction: int) -> list[float]