Polycom SoundStructure C16 Design Manual page 95

C-Series Input Processing
A/D
Mic or Line Analog Parametric Acoustic Echo
Converter
Input Gain Equalization Cancellation
meter will show less signal activity.
Since the level_pre meter position is before any processing has been applied to
the signal, even if the signal is muted within the SoundStructure device, the
level_pre input meter will show any signal activity on that input.
The level_post meter is after any processing as shown in the following figure.
In the example above, if the input signal is muted the level_post meter will not
show any signal activity.
The exact location of the meter in the signal processing path depends on the
type of signal that is viewed as described next.
Microphone level_post
Microphone channels post level will measure the signal level at the conferenc-
ing output of the input processing as shown in the following figure.
Microphone Post Processing Meter
Router
Non Linear
Noise
Processing
Cancellation
Feedback
Cancellation
ay Mute
ay
ay
ay
The fader on the bottom of the input channel can be used to adjust the gain of
the output of the input processing. The fader will change the level of all three
outputs going to the matrix. The meter activity will show the affect of any gain
AGC Dynamics Fader
Automatic Dynamics
Fader
Gain Control Processor
Automixer
Dynamics
Automatic
Automixer Fader
Processor
Gain Control
Automatic Dynamics
Automixer Fader
Gain Control Processor
Input to Recording/
Matrix
Ungated
Input to
Conferencing
Matrix
Sound
Input to
Matrix Reinforcement
level_post
Customizing SoundStructure Designs
Delay Mute
Input to Recording/
Delay
Matrix
Ungated
Input to
Conferencing
Delay
Matrix
Sound
Input to
Delay
Matrix Reinforcement
level_post
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