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MediaStreamTrackAudioSourceNode

files/en-us/web/api/mediastreamtrackaudiosourcenode/index.md

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{{APIRef("Web Audio API")}}

The MediaStreamTrackAudioSourceNode interface is a type of {{domxref("AudioNode")}} which represents a source of audio data taken from a specific {{domxref("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 {{domxref("RTCPeerConnection")}}, among other possible options.

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

{{InheritanceDiagram}}

<table class="properties"> <tbody> <tr> <th scope="row">Number of inputs</th> <td><code>0</code></td> </tr> <tr> <th scope="row">Number of outputs</th> <td><code>1</code></td> </tr> <tr> <th scope="row">Channel count</th> <td> defined by the first audio {{domxref("MediaStreamTrack")}} passed to the {{domxref("AudioContext.createMediaStreamTrackSource()")}} method that created it. </td> </tr> </tbody> </table>

Constructor

  • {{domxref("MediaStreamTrackAudioSourceNode.MediaStreamTrackAudioSourceNode", "MediaStreamTrackAudioSourceNode()")}}
    • : Creates a new MediaStreamTrackAudioSourceNode object instance with the specified options.

Instance properties

The MediaStreamTrackAudioSourceNode interface has no properties of its own; however, it inherits the properties of its parent, {{domxref("AudioNode")}}.

Instance methods

Inherits methods from its parent, {{domxref("AudioNode")}}.

Example

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

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also