@audio/sms
Status calibrated
npm1.2.2licenseMIT
Sinusoidal Modeling Synthesis time stretching — harmonic/tonal material
Overview
- Install
- Updated
- Family
- stretch, 10 packages under it
- Tags
- time & pitch
Sinusoidal Modeling Synthesis (Serra 1989, McAulay-Quatieri 1986). Decomposes audio into individually tracked sinusoidal partials and resynthesizes at the new time rate — frequency and magnitude of each partial interpolated independently, no bin-by-bin smearing.
import sms from '@audio/stretch-sms'
sms(data, { factor: 2 })
sms(data, { factor: 0.5, maxTracks: 80 })
| Param | Default | |
|---|---|---|
factor |
1 |
Time stretch ratio |
frameSize |
2048 |
FFT frame size |
hopSize |
frameSize/4 |
Hop between frames |
maxTracks |
60 |
Max simultaneous sinusoidal tracks |
minMag |
1e-4 |
Peak detection threshold (linear) |
freqDev |
3 |
Max frequency deviation (bins) for track continuation |
residualMix |
1 |
Stochastic residual blended into output |
Use when: harmonic / tonal content — instruments, chords, vocals — where the phase vocoder smears.
Not for: noise-dominated material.
Part of @audio/stretch.
License
MIT · ॐ