Polycom SoundStructure C16 Design Manual page 610

Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12
A - 94
Description
This parameter sets the frequency (in Hz) of the low-pass filter. For Butter-
worth filters this is the 3 dB frequency, but for Linkwitz-Riley filters, this is the
6 dB frequency.
lpf_order
Argument Argument value
Channel Type Virtual Channel
Value Type Integer
Read/Write Mode Read/Write
Conferencing Mic/Line Input, Conferencing Line Output,
Sound Reinforcement Mic/Line Input, Sound Reinforcement
Phys Chans Line Output, Analog Telephony Input, Analog Telephony
Output, Submix, ConferenceLink Aux Input, ConferenceLink
Aux Output
Virt Chans Mono, Stereo
System Limits Minimum: 1, Maximum: 8
Default 2
User Limits No
Supported
Event Source No
Description
This parameter sets the order of the low-pass filter. Linkwitz-Riley filters only
support even orders. If an odd order is specified for a Linkwitz-Riley filter, it
will be internally rounded up to an even number.
lpf_type
Argument Argument value
Channel Type Virtual Channel
Value Type List
Read/Write Mode Read/Write
Conferencing Mic/Line Input, Conferencing Line Output,
Sound Reinforcement Mic/Line Input, Sound Reinforcement
Phys Chans Line Output, Analog Telephony Input, Analog Telephony
Output, Submix, ConferenceLink Aux Input, ConferenceLink
Aux Output
Order Of Low-Pass Filter
Type Of Low-Pass Filter