Polycom SoundStructure C16 Design Manual page 377

Command
set trim "Program Audio"
1 2
set trim "Program Audio"
2 -3
trim Gain Trim For Virtual Channels
Argument
Channel Type
Value Type
Read/Write Mode
Phys Chans
Virt Chans
Indices
System Limits
Default
User Limits
Supported
Description
This parameter applies gain (in the analog domain) to the individual
components of a virtual channel. The index indicates to which physical
channel of the virtual channel the trim will be applied. For example, indices 1
and 2 correspond to the left and right physical channels of a stereo virtual
channel.
Examples
Response
val trim "Program Audio"
1 2
val trim "Program Audio"
2 -3
Argument value
Virtual Channel
Floating-Point
Read/Write
Conferencing Mic/Line Input, Conferencing Line Output,
Sound Reinforcement Mic/Line Input, Sound Reinforcement
Line Output
Stereo
1-32: Physical channel
Minimum: -20.0, Maximum: 20.0, Resolution: 0.5
0.0
No
Description
Sets the trim value of the left channel (channel 1) of the
stereo virtual channel "Program Audio" to 2dB.
Sets the trim value of the right channel (channel 2) of the
stereo virtual channel "Program Audio" to -3dB.
Command Protocol Reference Guide
A - 35