Apply a two-pole Butterworth band-pass filter with central frequency frequency, and (3dB-point) band-width width. The csg option selects a constant skirt gain (peak gain = Q) instead of the default: constant 0dB peak gain. The filter roll off at 6dB per octave (20dB per decade).
The filter accepts the following options:
- frequency, f
-
Set the filter’s central frequency. Default is
3000. - csg
-
Constant skirt gain if set to 1. Defaults to 0.
- width_type, t
-
Set method to specify band-width of filter.
- h
-
Hz
- q
-
Q-Factor
- o
-
octave
- s
-
slope
- k
-
kHz
- width, w
-
Specify the band-width of a filter in width_type units.
- channels, c
-
Specify which channels to filter, by default all available are filtered.
Commands
This filter supports the following commands:
- frequency, f
-
Change bandpass frequency. Syntax for the command is : "frequency"
- width_type, t
-
Change bandpass width_type. Syntax for the command is : "width_type"
- width, w
-
Change bandpass width. Syntax for the command is : "width"