Effects

librosa.effects provides wrapper functions for time-series manipulation, harmonic-percussive source separation, and standard audio effects.

It also provides some basic functions for trimming, splitting, or splicing signals.

hpss	Decompose an audio time series into harmonic and percussive components.
harmonic	Extract harmonic elements from an audio time-series.
percussive	Extract percussive elements from an audio time-series.
time_stretch	Time-stretch an audio series by a fixed rate.
pitch_shift	Shift the pitch of a waveform by n_steps steps.
remix	Remix an audio signal by re-ordering time intervals.
trim	Trim leading and trailing silence from an audio signal.
split	Split an audio signal into non-silent intervals.
preemphasis	Pre-emphasize an audio signal with a first-order differencing filter:
deemphasis	De-emphasize an audio signal with the inverse operation of preemphasis():