MediaStreamTrackAudioSourceNode

The MediaStreamTrackAudioSourceNode interface is a type of AudioNode which represents a source of audio data taken from a specific MediaStreamTrack obtained through the WebRTC or Media Capture and Streams APIs.

The audio itself might be input from a microphone or other audio sampling device, or might be received through a RTCPeerConnection, among other posible options.

A MediaStreamTrackAudioSourceNode has no inputs and exactly one output, and is created using the AudioContext.createMediaStreamTrackSource() method. This interface is similar to MediaStreamAudioSourceNode, except it lets you specifically state the track to use, rather than assuming the first audio track on a stream.

Number of inputs	`0`
Number of outputs	`1`
Channel count	defined by the first audio `MediaStreamTrack` passed to the `AudioContext.createMediaStreamTrackSource()` method that created it.

Constructor

new MediaStreamTrackAudioSourceNode(): Creates a new MediaStreamTrackAudioSourceNode object instance with the specified options.

Properties

The MediaStreamTrackAudioSourceNode interface has no properties of its own; however, it inherits the properties of its parent, AudioNode.

Methods

Inherits methods from its parent, AudioNode.

Example

See AudioContext.createMediaStreamSource() for example code that uses this object.

Specifications

Specification
Web Audio API # MediaStreamTrackAudioSourceNode

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`MediaStreamTrackAudioSourceNode`	No	No	68	No	No	No	No	No	68	No	No	No
`MediaStreamTrackAudioSourceNode`	No	No	68 Firefox 68 implements the updated standard's definition of the "first" audio track; now the first track is the one whose ID comes first lexicographically.	No	No	No	No	No	68 Firefox 68 implements the updated standard's definition of the "first" audio track; now the first track is the one whose ID comes first lexicographically.	No	No	No
`mediaStreamTrack`	No	No	68	No	No	No	No	No	68	No	No	No