Using Automatic Microphone Mixing - Polycom SoundStructure C16 Design Manual

Using Automatic Microphone Mixing

SoundStructure devices can use either gain sharing or gating styles of automatic microphone mixers and
support up to sixty-three different automixer groups. Microphones in the same group are part of the same
automixer and affect each others' gain or gating behavior. Each microphone input can be in one automixer
group. The default automixer style used is gain-sharing.
Defining Automixer Groups
Generally, all of the microphones in one room should be in the same group, and microphones in different
rooms should be in different groups. Even in zoned audio systems, all microphones should be in the same
automixer group.
In room division applications, microphones in different rooms should be in different automixer groups when
the rooms are divided. When the rooms are combined, they should be in the same automixer group.
Changing the group for microphones can be easily done by creating virtual channel groups of the
microphones in each room and when the rooms are combined, the am_group command can be used to set
the new automixer group for the virtual channel group associated with the individual room's microphones.
See Creating Advanced Applications for more information on room combining applications.
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