TUniquePtr< ISoundfieldTranscodeStream > Transcoder
If this child submix is a soundfield submix that we can read the output of, we may need to transcode it's audio output.
TUniquePtr< ISoundfieldTranscodeStream > Transcoder
If this child submix is a soundfield submix that we can read the output of, we may need to transcode it's audio output.