startWebAudio

chore function for starting web audio in mobile Safari

Installation

npm install start-web-audio

downloads:

• start-web-audio.js
• start-web-audio.min.js

API

• startWebAudio(audioContext, [ elem, requireUserAction, callback ]): void
  • attach event listeners to elem for starting Web Audio API
  • audioContext: AudioContext
  • elem: EventTarget
    • a target of event listener - default: window
  • requireUserAction: boolean
    • require user action - default: false
    • this option is useful, when want to use the same workflow in all devices.
  • callback: function
    • called when Web Audio API has been started - default: noop

Usage

var audioContext = new AudioContext();

startWebAudio(audioContext, function() {
  console.log("web audio is now available");
});

setInterval(function() {
  var oscillator = audioContext.createOscillator();

  oscillator.start(audioContext.currentTime);
  oscillator.stop(audioContext.currentTime + 0.1);
  oscillator.connect(audioContext.destination);
}, 1000);

License

MIT