Web/API/MediaTrackSettings/echoCancellation

The MediaTrackSettings dictionary's echoCancellation property is a Boolean value whose value indicates whether or not echo cancellation is enabled on an audio track. This lets you determine what value was selected to comply with your specified constraints for this property's value as described in the MediaTrackConstraints.echoCancellation property you provided when calling either getUserMedia() or MediaStreamTrack.applyConstraints().

Echo cancellation is a feature which attempts to prevent echo effects on a two-way audio connection by attempting to reduce or eliminate crosstalk between the user's output device and their input device. For example, it might apply a filter that negates the sound being produced on the speakers from being included in the input track generated from the microphone.

If needed, you can determine whether or not this constraint is supported by checking the value of MediaTrackSupportedConstraints.echoCancellation as returned by a call to MediaDevices.getSupportedConstraints(). However, typically this is unnecessary since browsers will simply ignore any constraints they're unfamiliar with.

Because RTP doesn't include this information, tracks associated with a WebRTC RTCPeerConnection will never include this property.

Syntax

var echoCancellation = MediaTrackSettings.echoCancellation;

Value

A Boolean value which is true if the track has echo cancellation functionality enabled or false if echo cancellation is disabled.

Example

See Example: Constraint exerciser in Capabilities, constraints, and settings for an example.

Specifications

Specification	Status	Comment
Media Capture and StreamsThe definition of 'echoCancellation' in that specification.	Candidate Recommendation	Initial specification.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`echoCancellation`	Chrome Full support Yes	Edge Full support ≤79	Firefox Full support 50	IE No support No	Opera Full support Yes	Safari ?	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 50	Opera Android Full support Yes	Safari iOS ?	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown