Understanding C-Series Input Processing - Polycom SoundStructure C16 Design Manual

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Audio and video conferencing are typical applications of the SoundStructure C-series conferencing products

where two or more remote locations are conferenced together. The typical connections in a conference

room are shown in the following figure.

Typical SoundStructure Video and Audio Connections in a Conference Room

SoundStructure Installation

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Before designing with SoundStructure products, the details of the SoundStructure signal processing

capabilities are presented.

Understanding C-Series Input Processing

The input processing on the SoundStructure C-series devices is designed to help you create conferencing

solutions with or without sound reinforcement. The audio input processing on a SoundStructure C-series

device is shown in the following table.

SoundStructure Input Processing

Input Processing

Up to 8th order highpass and lowpass

1st or 2nd order high shelf and low shelf

10-band parametric equalization

Acoustic echo cancellation, 20-22kHz 200 msec tail-time, monaural or stereo

Automatic gain control: +15 to -15dB

Dynamics processing: gate, expander, compressor, limiter, peak limiter

Feedback Eliminator: 10 adaptive filters

Noise cancellation: 0-20dB noise reduction

Automixer: gain sharing or gated mixer

Signal fader gain: +20 to -100 dB

Signal delay to 1000 msec

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