librosa.octs_to_hz

librosa.octs_to_hz(octs, *, tuning=0.0, bins_per_octave=12)[source]

Convert octaves numbers to frequencies.

Octaves are counted relative to A.

Parameters:
octsnp.ndarray [shape=(n,)] or float

octave number for each frequency

tuningfloat

Tuning deviation from A440 in (fractional) bins per octave.

bins_per_octaveint > 0

Number of bins per octave.

Returns:
frequenciesnumber or np.ndarray [shape=(n,)]

scalar or vector of frequencies

See also

hz_to_octs

Examples

>>> librosa.octs_to_hz(1)
55.
>>> librosa.octs_to_hz([-2, -1, 0, 1, 2])
array([   6.875,   13.75 ,   27.5  ,   55.   ,  110.   ])