@audio/midi

Symbolic ↔ audio bridge — SMF parse/write, roundtrip-tested.

Package	Status	What
@audio/midi-parse	✔	SMF → {tracks, tempos, notes, duration}
@audio/midi-write	✔	notes → SMF format-0 bytes
@audio/midi-soundfont	deferred	render via SF2 or midi-js-soundfonts banks — needs an asset-strategy decision first (real SF2 engine vs. ~100 MB/instrument pre-rendered banks, neither belongs in an npm atom as-is)

import { parse, write } from '@audio/midi'

let smf = write(notes, { bpm: 120 })          // notes → SMF bytes
let { notes, tempos, duration } = parse(smf)  // SMF bytes → notes

Render through any synth voice today, no soundfont needed:

import { parse } from '@audio/midi'
import poly from '@audio/synth-poly'

let audio = poly(parse(smf).notes, { voice: pluck })

Consumers: singing-to-midi tool (site todo), signal/strudel-style editors, @audio/note for pitch math.