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Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12
9 - 62
Finally, the reference for the table microphones can be set to include both the
lectern and wireless microphone references. Since two references can be con-
figured per microphone, the first reference will be set to “WirelessRef” and the
second reference will be set to “LecternRef”.
To further simplify the system with an eye towards in-room volume control,
another submix “RemoteAudio” will be created that contains just the remote
audio signals - the telephone and the program audio. This way the in-room
volume control can adjust the “RemoteAudio” submix to increase or decrease
the level of the remote audio into the local room. See the following figure for
how the new matrix will appear.
Keep in mind that the “RemoteAudio” channel should not be sent to the
“Phone Out” signal to prevent the “Phone In” channel from being routed to
the “Phone Out” signal causing a persistent electronic echo of the telephone
talker back to the telephone talker.