Polycom SoundStructure C16 Design Manual page 114

Conferencing as the Ungated Signal Path for Program Audio
The ungated conferencing signal path is shown in the following figure. Notice that the noise cancellation
processing is now in the signal path along with the automatic gain control, dynamics processing, fader,
delay, and mute. The acoustic echo canceller is also in this signal path but is not enabled for
non-microphone audio sources.
Polycom, Inc. 114