AudioBuildMultichannelMessage Field Type Repeated Description message oneOf ⮑subscription Subscription ⮑initial_config AudioBuildMultichannelConfiguration ⮑update_channels AudioBuildMultichannelUpdateChannels Argument of Method Description CreateTransformAudioBuildMultichannel Aggregate many single-channel audio streams into a stream with the specified channel layout. The streams must all have the same sample format and sample rate. The order of the streams provided for the channels is important. AudioBuildMultichannelEvent AudioBuildMultichannelSource