lp m hq

2-pole resonant low-pass filter (biquad) 24kHz
Author: Johannes Taelman
License: BSD
Github: phi/filter/lp m hq.axo

Inlets

frac32buffer filter input

frac32 pitch

frac32 filter resonance

Outlets

frac32buffer filter output

Parameters

frac32.u.map.filterq reso

frac32.u.map.freq pitch

Declaration
biquad_state bs;
biquad_coefficients bc;
Init
biquad_clearstate(&bs);
Control Rate
int32_t freq;
MTOF(param_pitch + inlet_pitch, freq);
biquad_lp_coefs(&bc, freq,
                INT_MAX - (__USAT(inlet_reso + param_reso, 27) << 4));
biquad_dsp(&bs, &bc, inlet_in, outlet_out);

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