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librosa.filters.constant_q_lengths¶

librosa.filters.constant_q_lengths(*, sr, fmin, n_bins=84, bins_per_octave=12, window='hann', filter_scale=1, gamma=0)[source]¶

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

Warning

This function is deprecated as of v0.9 and will be removed in 1.0. See librosa.filters.wavelet_lengths.

Parameters

srnumber > 0 [scalar]: Audio sampling rate
fminfloat > 0 [scalar]: Minimum frequency bin.
n_binsint > 0 [scalar]: Number of frequencies. Defaults to 7 octaves (84 bins).
bins_per_octaveint > 0 [scalar]: Number of bins per octave
windowstr or callable: Window function to use on filters
filter_scalefloat > 0 [scalar]: Resolution of filter windows. Larger values use longer windows.
gammanumber >= 0: Bandwidth offset for variable-Q transforms. gamma=0 produces a constant-Q filterbank.

Returns