bandpass

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"