@audio/stretch-pvoc
v1.2.1
Published
Phase vocoder time stretching — educational baseline without phase locking
Readme
@audio/stretch-pvoc
Plain phase vocoder. Each FFT bin's phase advances at its instantaneous frequency. Magnitudes preserved, but inter-harmonic phase coherence is lost — complex signals get a diffuse, "underwater" character. Educational baseline.
import pvoc from '@audio/stretch-pvoc'
let out = pvoc(data, { factor: 2 })| Param | Default | |
|---|---|---|
| factor | 1 | Time stretch ratio |
| frameSize | 2048 | FFT size (power of 2) |
| hopSize | frameSize/4 | Hop between frames |
Use when: learning the phase-vocoder algorithm, simple tonal signals.
Not for: general music — use @audio/stretch-pvoc-lock or @audio/stretch-transient.
Part of @audio/stretch.