A collection of generative music pieces for generative.fm.
Each piece is available via npm under the @generative-music scope.
For example, the piece "Observable Streams" can be installed like so:
npm i @generative-music/piece-observable-streamsIMPORTANT: The pieces use audio files hosted on samples.generative.fm, which does not support requests from unrecognized origins.
The default export of every piece is a function which takes an object parameter and returns a promise which resolves with a cleanup function once the piece is ready.
The object parameter passed to the exported function of a piece should have three properties:
audioContext: An instantiated implementation of the Web Audio APIAudioContextinterface.destination: AnAudioNodeto which the piece's own nodes will be connected.preferredFormat: A string containing the audio format to use for any audio files. Currently accepted values areoggandmp3.
Currently, all pieces use Tone.js which is required to control a piece.
import Tone from 'tone';
import makePiece from '@generative-music/piece-observable-streams';
// Detect ogg support, otherwise use mp3
const preferredFormat = document.createElement('audio').canPlayType('audio/ogg') !== '' ? 'ogg' : 'mp3';
makePiece({ audioContext: Tone.context, destination: Tone.Master, preferredFormat }).then(cleanUp => {
// Starting the piece
// Make sure you follow the Chrome Autoplay policy: https://developers.google.com/web/updates/2017/09/autoplay-policy-changes#webaudio
Tone.Transport.start();
// Stopping the piece
Tone.Transport.stop(); // stop Transport events
Tone.Transport.cancel(); // remove all Transport events
cleanUp(); // dispose of audio nodes created by the piece
})