The ConstantSourceNode()
constructor creates a new ConstantSourceNode
object instance, representing an audio source which constantly outputs samples whose values are always the same.
var constantSourceNode = new ConstantSourceNode(context, options);
context
AudioContext
representing the audio context you want the node to be associated with.options
ConstantSourceOptions
dictionary object defining the properties you want the ConstantSourceNode
to have: offset
: A read-only AudioParam
specifying the constant value generated by the source. The default is 1.0. The normal range is -1.0 to 1.0, but the value can be anywhere in the range from -Infinity
to +Infinity
.In this example, an audio context is created, then a ConstantSourceNode
is established with its offset
initialized to 0.5.
let audioContext = new AudioContext(); let myConstantSource = new ConstantSourceNode(audioContext, { offset: 0.5 });
Note: The new ConstantSourceNode
created by the constructor has a channelCount
of 2.
Specification | Status | Comment |
---|---|---|
Web Audio API The definition of 'ConstantSourceNode: ConstantSourceNode' in that specification. | Working Draft |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | No | ? | 52 | No | No | No |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | No | No | ? | 52 | No | No | No |
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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/ConstantSourceNode/ConstantSourceNode