mml-emitter

MML(Music Macro Language) event emitter for Web Audio API

Installation

$ npm install mml-emitter

downloads:

• mml-emitter.js
• mml-emitter.min.js

API

MMLEmitter

• constructor(source: string, config = {})

Instance methods

Also implements methods from the interface EventEmitter.

• start([ t0: number ]): void
• stop([ t0: number ]): void

Events

• note
  • type: "note"
  • playbackTime: number
  • trackNumber: number
  • noteNumber: number
  • duration: number
  • velocity: number
  • quantize: number
• end
  • type: "end"
  • playbackTime: number
  • trackNumber: number
• end:all
  • type: "end:all"
  • playbackTime: number

Example

import MMLEmitter from "mml-emitter";

let mml = "t200 o6 l8 e g > e c d g";
let config = { context: audioContext };
let mmlEmitter = new MMLEmitter(mml, config);

mmlEmitter.on("note", (e) => {
  console.log("NOTE: " + JSON.stringify(e));
});
mmlEmitter.on("end:all", (e) => {
  console.log("END : " + JSON.stringify(e));
  mmlEmitter.stop();
});

mmlEmitter.start();

Demo

• http://mohayonao.github.io/mml-emitter/

See Also

• MML Syntax
  • MMLIterator / MML(Music Macro Language) Iterator
• Configuration
  • WebAudioScheduler / Event Scheduler for Web Audio API
• NoteNumber to Frequency
  • mtof = m => 440 * Math.pow(2, (m - 69) / 12)

License

MIT