Apply a biquad IIR filter with the given coefficients. Where b0, b1, b2 and a0, a1, a2 are the numerator and denominator coefficients respectively. and channels, c specify which channels to filter, by default all available are filtered.
Commands
This filter supports the following commands:
- a0, a1, a2, b0, b1, b2
-
Change biquad parameter. Syntax for the command is : "value"
- mix, m
-
How much to use filtered signal in output. Default is 1. Range is between 0 and 1.
- channels, c
-
Specify which channels to filter, by default all available are filtered.
- normalize, n
-
Normalize biquad coefficients, by default is disabled. Enabling it will normalize magnitude response at DC to 0dB.
- transform, a
-
Set transform type of IIR filter.
- di
- dii
- tdii
- latt
- svf
- precision, r
-
Set precison of filtering.
- auto
-
Pick automatic sample format depending on surround filters.
- s16
-
Always use signed 16-bit.
- s32
-
Always use signed 32-bit.
- f32
-
Always use float 32-bit.
- f64
-
Always use float 64-bit.