Polycom SoundStructure C16 Design Manual page 27

following figure. You can use the bypass version for minimal audio processing on an input signal. This
version of the signal has no acoustic echo cancellation processing and consequently includes any acoustic
echo signal that may be present at the microphones.
SoundStructure C-Series Recording/Ungated–Bypass Path
UNGATED - Bypass
Mic or Line A/D Parametric
Analog
Converter
Input Gain Equalization
Processing Recording/Ungated–Line Input
The recording/ungated line input includes equalization, automatic gain control, and the dynamics
processing as well as fader gain control, input delay, and input mute, as shown in the following figure. This
processing path is typically used by line input signals such as program audio.
SoundStructure C-Series Recording Ungated–Line Input Path
UNGATED - Line Input Processing
Mic or Line A/D Parametric
Analog
Input Gain Converter Equalization
Parametric
Equalization
Processing Recording/Ungated–Conferencing
The recording/ungated conferencing processed input includes acoustic echo and noise cancellation, as
shown in the following figure. This path is used for the recording of conference microphones as it includes
all the acoustic echo cancellation but not the automatic microphone mixer processing.
Polycom, Inc.
Non Linear
Acoustic Echo Noise
Processing
Cancellation Cancellation
Feedback
Cancellation
Non Linear
Acoustic Echo Noise
Processing
Cancellation Cancellation
Feedback
Cancellation
AGC Dynamics
Automatic Dynamics
Gain Control Processor
Automixer
Automatic Dynamics
Automixer
Processor
Gain Control
Automatic Dynamics
Automixer
Gain Control Processor
AGC Dynamics
Automatic Dynamics
Gain Control Processor
Automixer
Automatic Dynamics
Automixer
Gain Control Processor
Automatic Dynamics
Automixer
Gain Control Processor
Dynamics
Automatic
Gain Control Processor
Fader Delay Mute
Input to
Fader Delay
Matrix
Input to
Fader Delay
Matrix
Input to
Fader Delay
Matrix
Fader Delay Mute
Fader Delay Mute
Input to
Fader Delay
Matrix
Input to
Fader Delay
Matrix
Input to
Fader Delay
Matrix
Fader Delay Mute
Recording/
Ungated
Conferencing
Sound
Reinforcement
Recording/
Ungated
Conferencing
Sound
Reinforcement
27