Optional obj: Partial<AudioMixInputStreamChannel>Optional inputThe id of the input stream that should be used for mixing.
AudioMixInputStreamChannel
Optional outputNumber of this output channel. If type is 'CHANNEL_NUMBER', this must be set.
AudioMixInputStreamChannel
Optional outputAudioMixInputStreamChannel
Optional sourceList of source channels to be mixed
AudioMixInputStreamChannel
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AudioMixInputStreamChannel