librosa.filters.constant_q_lengths¶

librosa.filters.constant_q_lengths(sr, fmin, n_bins=84, bins_per_octave=12, tuning=0.0, window=’hann’, filter_scale=1)[source]¶

Return length of each filter in a constant-Q basis.

Parameters:

sr : number > 0 [scalar]: Audio sampling rate
fmin : float > 0 [scalar]: Minimum frequency bin.
n_bins : int > 0 [scalar]: Number of frequencies. Defaults to 7 octaves (84 bins).
bins_per_octave : int > 0 [scalar]: Number of bins per octave
tuning : float in [-0.5, +0.5) [scalar]: Tuning deviation from A440 in fractions of a bin
window : str or callable: Window function to use on filters
filter_scale : float > 0 [scalar]: Resolution of filter windows. Larger values use longer windows.

Returns: