{"json_modified": "2016-03-28T08:37:57.587642", "uuid": "286acb98-eb62-4df4-85e6-4a60302b784e", "title": "OfflineAudioContext.oncomplete", "url": "/en-US/docs/Web/API/OfflineAudioContext/oncomplete", "tags": ["API", "OfflineAudioContext", "oncomplete", "Reference", "Property", "R\u00e9f\u00e9rence", "Web Audio API"], "translations": [], "modified": "2015-02-22T10:07:50", "label": "OfflineAudioContext.oncomplete", "localization_tags": [], "locale": "en-US", "id": 127139, "last_edit": "2015-02-22T10:06:17", "summary": "In this simple example, we declare both an <a href=\"/en-US/docs/Web/API/AudioContext\" title=\"An AudioContext can be a target of events, therefore it implements the EventTarget interface.\"><code>AudioContext</code></a> and an <code>OfflineAudioContext</code> object. We use the <code>AudioContext</code> to load an audio track via XHR (<a href=\"/en-US/docs/Web/API/AudioContext/decodeAudioData\" title=\"This is the preferred method of creating an audio source for Web Audio API from an audio track.\"><code>AudioContext.decodeAudioData</code></a>), then the <code>OfflineAudioContext</code> to render the audio into an <a href=\"/en-US/docs/Web/API/AudioBufferSourceNode\" title=\"The AudioBufferSourceNode interface represents an audio source consisting of in-memory audio data, stored in an AudioBuffer. It is an AudioNode that acts as an audio source.\"><code>AudioBufferSourceNode</code></a> and play the track through. After the offline audio graph is set up, you need to render it to an <a href=\"/en-US/docs/Web/API/AudioBuffer\" title=\"Objects of these types are designed to hold small audio snippets, typically less than 45&#xA0;s. For longer sounds, objects implementing the MediaElementAudioSourceNode are more suitable. The buffer contains data in the following format:&#xA0; non-interleaved IEEE754 32-bit linear PCM with a nominal range between -1 and +1, that is, 32bits floating point buffer, with each samples between -1.0 and 1.0. If the AudioBuffer has multiple channels, they are stored in separate buffer.\"><code>AudioBuffer</code></a> using <a href=\"/en-US/docs/Web/API/OfflineAudioContext/startRendering\" title=\"The startRendering() method of the OfflineAudioContext Interface starts rendering the audio graph, taking into account the current connections and the current scheduled changes.\"><code>OfflineAudioContext.startRendering</code></a>.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Example", "title": "Example"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}, {"id": "See_also", "title": "See also"}], "slug": "Web/API/OfflineAudioContext/oncomplete", "review_tags": ["technical"]}