@audio/envelope
Status calibrated
npm1.1.3licenseMIT
ADSR envelope generator — gain contour for amplitude/filter modulation
ADSR contour generator (one-shot, known length)
import adsr from '@audio/synth-envelope'
ADSR gain-contour generator — attack/decay linear, sustain flat, release exponential-ish. Returns a Float32Array contour to multiply onto any source (gain, filter cutoff, amplitude); one-shot, whole envelope rendered up front (known total length, unlike a gate-driven realtime ADSR).
adsr({ attack: 0.01, decay: 0.1, sustain: 0.7, release: 0.3, duration: 1 })
| Param | Default | |
|---|---|---|
attack |
0.01 |
Seconds |
decay |
0.1 |
Seconds |
sustain |
0.7 |
Sustain level, 0..1 |
release |
0.3 |
Seconds |
duration |
1 |
Note-on length, seconds (release starts here) |
fs |
44100 |
Sample rate |
Use when: shaping any generator's amplitude or a filter cutoff — used internally by synth-voice.
Part of @audio/synth — the synth family umbrella.
MIT © audiojs