The ConstantSourceNode()
constructor creates a new ConstantSourceNode
object instance, representing an audio source which constantly outputs samples whose values are always the same.
Syntax
var constantSourceNode = new ConstantSourceNode(context, options);
Parameters
context
- An
AudioContext
representing the audio context you want the node to be associated with. options
- A
ConstantSourceOptions
dictionary object defining the properties you want theConstantSourceNode
to have:offset
: A read-onlyAudioParam
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
.
Example
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 });
Specifications
Specification | Status | Comment |
---|---|---|
Web Audio API The definition of 'ConstantSourceNode' in that specification. |
Working Draft |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | No | ? | 52 | No | No | No |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | No | No | ? | 52 | No | No | No |