The createOscillator() method of the BaseAudioContext interface creates an OscillatorNode, a source representing a periodic waveform. It basically generates a constant tone.
Note: The OscillatorNode() constructor is the recommended way to create a OscillatorNode; see Creating an AudioNode.
createOscillator()
An OscillatorNode.
The following example shows basic usage of an AudioContext to create an oscillator node. For applied examples/information, check out our Violent Theremin demo (see app.js for relevant code); also see our OscillatorNode page for more information.
// create web audio api context var audioCtx = new (window.AudioContext || window.webkitAudioContext)(); // create Oscillator node var oscillator = audioCtx.createOscillator(); oscillator.type = 'square'; oscillator.frequency.setValueAtTime(3000, audioCtx.currentTime); // value in hertz oscillator.connect(audioCtx.destination); oscillator.start();
| Specification |
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| Web Audio API # dom-baseaudiocontext-createoscillator |
| Desktop | Mobile | |||||||||||
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| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
createOscillator |
20
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12
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25
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No
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15
|
6
|
≤37
|
25
|
25
|
14
|
6
|
1.5
|
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext/createOscillator
| Name | Web APIs |
| Version | |
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| Last Updated | 2022-04-27T09:33:08Z |