Polycom SoundStructure C16 Design Manual page 653

Enable Noise Fill—aec_noise_fill
Argument Argument value
Channel Type Virtual Channel
Value Type Boolean
Read/Write Mode Read/Write
Phys Chans Conferencing Mic/Line Input
Virt Chans Mono, Stereo
Default 1
Event Source No
Description
This parameter enables (1) or disables (0) the noise fill algorithm in the AEC.
AEC Reference—aec_ref
Argument Argument value
Channel Type Virtual Channel
Value Type String
Read/Write Mode Read/Write
Phys Chans Conferencing Mic/Line Input
Virt Chans Mono, Stereo
Indices 1-2 : Left or right
System Limits Max String Length: 256
Default
Event Source No
Description
This parameter is used to set the AEC references for an given virtual channel. The string argument specifies the name
of the virtual channel that will be the AEC reference. The string argument must be a valid virtual channel name for a
currently defined virtual channel that is a conferencing line output (cr_line_out), sound reinforcement line output
(sr_line_out), or submix output (submix).
The index is used to specify the left (1) or right (2) reference channels. If neither the left nor the right channel have
references specified, then the AEC is disabled. If only the left channel is specified, then the mono AEC algorithm is
used. If both the left and right channel are specified, then the stereo AEC algorithm is used.
Polycom, Inc. 653