@audio/synth-poly

N-voice allocator — oldest-note steal with 5 ms fade, {freq|midi} notes, any pitched generator as voice

npm install @audio/synth-poly

import poly from '@audio/synth-poly'

Polyphonic voice allocator: renders a list of note events through any voice function with N-voice polyphony and oldest-note stealing (5 ms fade at the steal point, no click). The voice contract is the family's generator shape — (freq, {fs, duration, velocity, ...voiceOpts}) => Float32Array — every pitched @audio/synth generator satisfies it (osc, pluck, fm, modal, drum's membrane/metal, bell, epiano, risset, wavetable…). Extra per-voice config (fm's ratio/index, modal's model, wavetable's tables) rides in via voiceOpts.

import osc from '@audio/synth-osc'
poly([{ time: 0, freq: 440, duration: 0.5 }, { time: 0.2, midi: 64 }], { voice: osc, voices: 8 })

| Param | Default | | |---|---|---| | notes | — | [{time, freq\|midi, duration=0.5, velocity=1}] (positional) | | voice | — | Required — (freq, opts) => Float32Array voice function | | voiceOpts | {} | Extra options forwarded to every voice call | | voices | 16 | Max simultaneous notes — oldest is stolen with a 5ms fade | | duration | — | Total seconds; default: end of last note + 0.5 | | fs | 44100 | Sample rate |

Use when: hosting any pitched generator polyphonically, or rendering MIDI: poly(parse(smf).notes, { voice: pluck }) — see @audio/midi.

Part of @audio/synth — the synth family umbrella.

MIT © audiojs