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
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 ignore any constraints they're unfamiliar with.
Because RTP doesn't include this information, tracks associated with a
will never include this property.
A Boolean value which is
true if the track has echo cancellation
functionality enabled or
false if echo cancellation is disabled.
See the Constraint exerciser example.
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