Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12
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submixes to achieve the desired behavior when a particular HDX video codec
is muted or has volume adjusted. If the virtual channel names “Mics” and
“Amplifier” are not defined, then nothing will be muted and no volume will
be adjusted on the SoundStructure when one of the HDX video codecs has its
mute status changed or volume adjusted.