Polycom SoundStructure C16 Design Manual page 634

Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12
A - 118
fb_filter_bandwidth
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: 0.03, Maximum: 1.0, Resolution: 0.01
Default 0.1
User Limits No
Supported
Event Source No
Description
This parameter sets the bandwidth (in octaves) for all the filters of the feedback
reduction algorithm.
fb_filter_decay_en
Algorithm
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
Event Source No
Description
This parameter enables (1) or disables (0) filter decay mode for the feedback
reduction algorithm. If filter decay mode is enabled, the adaptive notch filters
can slowly decay to 0 dB if no singing is detected at that frequency. This mode
is useful in rooms with high noise or where there is a lot of motion.
Feedback Reduction filter Bandwidth
Enable Filter Decay Mode In Feedback Reduction