Polycom SoundStructure C16 Design Manual page 443

am_chairman Automixer Chairman Microphone
Argument Argument value
Channel Type Virtual Channel
Value Type Boolean
Read/Write Mode Read/Write
Phys Chans Conferencing Mic/Line Input, Sound Reinforcement Mic/Line
Input
Virt Chans Mono, Stereo
Default 0
Description
When this parameter is set to 1, the microphone is considered a chairman
microphone.
am_chan_bias Automixer Channel Bias
Argument Argument value
Channel Type Virtual Channel
Value Type Floating-Point
Read/Write Mode Read/Write
Phys Chans Conferencing Mic/Line Input, Sound Reinforcement Mic/Line
Input
Virt Chans Mono, Stereo
System Limits Minimum: -20.0, Maximum: 20.0, Resolution: 0.1
Default 0.0
User Limits No
Supported
Description
This parameter sets the channel bias (in dB) for the associated microphone. For
the purpose of determining activity status, this microphone is treated as
though its level were higher or lower (according to the setting of the
parameter) than its actual measured level.
Command Protocol Reference Guide
A - 101