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@audio/stretch-pvoc-lock

v1.3.1

Published

Phase-locked vocoder (Laroche & Dolson 1999) — eliminates phasiness of plain pvoc

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Links

Git

Maintainers

jamenjamendfcreativedfcreativedydy

Keywords

audiodsptime-stretchphase-vocoderpvocphase-lockingstft

Readme

@audio/stretch-pvoc-lock

Phase-locked vocoder (Laroche & Dolson, 1999). After propagating phases, locks non-peak bins to their nearest spectral peak's rotation — restores harmonic phase coherence and eliminates the phasiness of plain phase vocoder.

import pvocLock from '@audio/stretch-pvoc-lock'
let out = pvocLock(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: general music — tonal/ambient material. Not for: percussive material where attacks must stay sharp — use @audio/stretch-transient.

Part of @audio/stretch.

License

MIT · ॐ