Polycom SoundStructure C16 Design Manual page 444

Stereo Virtual Channels
To leverage the stereo capabilities of the VSX8000 codec, it is possible to adjust the panning of the local
room microphones to create relative positional information based on the local talker location in the room.
This information can be transmitted as part of the stereo audio output signal to the remote participants by
adjusting the matrix crosspoint pan settings to reflect the position of the microphones relative to the camera
reference point.
Consider the room layout in the following figure that has microphone 1 located at one end of the table at site
1. This microphone has a relative position of being "right" of the camera from the camera's perspective as
shown by the dotted line from the microphone to the camera's left/right reference line. If you imagine
Polycom, Inc. 444