Effects

Harmonic-percussive source separation

hpss(y, *[, kernel_size, power, mask, ...])	Decompose an audio time series into harmonic and percussive components.
harmonic(y, *[, kernel_size, power, mask, ...])	Extract harmonic elements from an audio time-series.
percussive(y, *[, kernel_size, power, mask, ...])	Extract percussive elements from an audio time-series.

Time and frequency

time_stretch(y, *, rate, **kwargs)	Time-stretch an audio series by a fixed rate.
pitch_shift(y, *, sr, n_steps[, ...])	Shift the pitch of a waveform by n_steps steps.

Miscellaneous

remix(y, intervals, *[, align_zeros])	Remix an audio signal by re-ordering time intervals.
trim(y, *[, top_db, ref, frame_length, ...])	Trim leading and trailing silence from an audio signal.
split(y, *[, top_db, ref, frame_length, ...])	Split an audio signal into non-silent intervals.
preemphasis(y, *[, coef, zi, return_zf])	Pre-emphasize an audio signal with a first-order differencing filter:
deemphasis(y, *[, coef, zi, return_zf])	De-emphasize an audio signal with the inverse operation of preemphasis():