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Fix iOS AudioContext on Safari not playing any audio. It needs to be "warmed up" from a user interaction, then you can play audio with it as normal throughout the rest of the life cycle of the page.
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| // Fix iOS Audio Context by Blake Kus https://gist.github.com/kus/3f01d60569eeadefe3a1 | |
| // MIT license | |
| (function() { | |
| window.AudioContext = window.AudioContext || window.webkitAudioContext; | |
| if (window.AudioContext) { | |
| window.audioContext = new window.AudioContext(); | |
| } | |
| var fixAudioContext = function (e) { | |
| if (window.audioContext) { | |
| // Create empty buffer | |
| var buffer = window.audioContext.createBuffer(1, 1, 22050); | |
| var source = window.audioContext.createBufferSource(); | |
| source.buffer = buffer; | |
| // Connect to output (speakers) | |
| source.connect(window.audioContext.destination); | |
| // Play sound | |
| if (source.start) { | |
| source.start(0); | |
| } else if (source.play) { | |
| source.play(0); | |
| } else if (source.noteOn) { | |
| source.noteOn(0); | |
| } | |
| } | |
| // Remove events | |
| document.removeEventListener('touchstart', fixAudioContext); | |
| document.removeEventListener('touchend', fixAudioContext); | |
| }; | |
| // iOS 6-8 | |
| document.addEventListener('touchstart', fixAudioContext); | |
| // iOS 9 | |
| document.addEventListener('touchend', fixAudioContext); | |
| })(); |
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Fix iOS Audio Context</title> | |
| <meta name="author" content="Blake Kus"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| </head> | |
| <body> | |
| <h1>iOS Safari AudioContext Demo</h1> | |
| <p>Load on iOS device without touching the screen and it will not play a noise after 3 seconds.</p> | |
| <p>Refresh the page touch the screen (within 3 seconds of it loading) and the audio and any other audio will play outside of a user generated event.</p> | |
| <p id="status">Waiting 3 seconds to play audio...</p> | |
| <script type="text/javascript"> | |
| // Fix iOS Audio Context by Blake Kus https://gist.github.com/kus/3f01d60569eeadefe3a1 | |
| // MIT license | |
| (function() { | |
| window.AudioContext = window.AudioContext || window.webkitAudioContext; | |
| if (window.AudioContext) { | |
| window.audioContext = new window.AudioContext(); | |
| } | |
| var fixAudioContext = function (e) { | |
| if (window.audioContext) { | |
| // Create empty buffer | |
| var buffer = window.audioContext.createBuffer(1, 1, 22050); | |
| var source = window.audioContext.createBufferSource(); | |
| source.buffer = buffer; | |
| // Connect to output (speakers) | |
| source.connect(window.audioContext.destination); | |
| // Play sound | |
| if (source.start) { | |
| source.start(0); | |
| } else if (source.play) { | |
| source.play(0); | |
| } else if (source.noteOn) { | |
| source.noteOn(0); | |
| } | |
| } | |
| // Remove events | |
| document.removeEventListener('touchstart', fixAudioContext); | |
| document.removeEventListener('touchend', fixAudioContext); | |
| }; | |
| // iOS 6-8 | |
| document.addEventListener('touchstart', fixAudioContext); | |
| // iOS 9 | |
| document.addEventListener('touchend', fixAudioContext); | |
| })(); | |
| var $status = document.querySelector('#status'); | |
| function playSound () { | |
| var path = '../sounds/laser.mp3'; | |
| var context = window.audioContext; | |
| var request = new XMLHttpRequest(); | |
| $status.innerHTML = 'Playing ' + path; | |
| request.open('GET', path, true); | |
| request.responseType = 'arraybuffer'; | |
| request.addEventListener('load', function (e) { | |
| context.decodeAudioData(this.response, function (buffer) { | |
| var source = context.createBufferSource(); | |
| source.buffer = buffer; | |
| source.connect(context.destination); | |
| source.start(0); | |
| }); | |
| }, false); | |
| request.send(); | |
| } | |
| setTimeout(playSound, 3000); | |
| </script> | |
| </body> | |
| </html> |
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