vcf
2-pole resonant low-pass filter (biquad), filter updated at k-rate
Inlets
frac32buffer filter input
frac32 cutoff frequency
frac32 filter resonance
Outlets
frac32buffer filter output
Declaration
data_filter_biquad_A fd;
Init
init_filter_biquad_A(&fd);
Control Rate
int32_t freq;
MTOF(inlet_frequency, freq);
f_filter_biquad_A(&fd, inlet_in, outlet_out, freq,
INT_MAX - (__USAT(inlet_reso, 27) << 4));