Polycom SoundStructure C16 Design Manual page 643

Expander Threshold—dp_exp_thresh
Argument Argument value
Channel Type Virtual Channel
Value Type Floating-Point
Read/Write Mode Read/Write
Phys Chans Conferencing Mic/Line Input, Conferencing Line Output, Sound Reinforcement Mic/Line
Input, Sound Reinforcement Line Output, Analog Telephony Input, Analog Telephony Output,
Submix, ConferenceLink Aux Input, ConferenceLink Aux Output
Virt Chans Mono, Stereo
System Limits Minimum: -100.0, Maximum: 0.0, Resolution: 0.1
Default -100
User Limits No
Supported
Event Source No
Description
This parameter sets the RMS level (in dBFS) of the input signal below which the expander engages.
Polycom, Inc. 643