Optional
autoOptional
channelthe channel count or range of channel counts which are acceptable and/or required
Optional
deviceA ConstrainDOMString object specifying a device ID or an array of device IDs which are acceptable and/or required.
Optional
echowhether or not echo cancellation is preferred and/or required
Optional
latencythe latency or range of latencies which are acceptable and/or required.
Optional
noisewhether noise suppression is preferred and/or required.
Optional
processorinitialize the track with a given processor
Optional
samplethe sample rate or range of sample rates which are acceptable and/or required.
Optional
samplesample size or range of sample sizes which are acceptable and/or required.
specifies whether automatic gain control is preferred and/or required