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using single set of coeffs for smoothing in bw_svf

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This commit is contained in:
Stefano D'Angelo 2022-11-26 11:40:42 +01:00
parent dbabc619d7
commit 0f474d88b1
1 changed files with 10 additions and 16 deletions
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26
include/bw_svf.h
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@ -131,9 +131,8 @@ static inline void bw_svf_set_Q(bw_svf_coeffs *BW_RESTRICT coeffs, float value);
struct _bw_svf_coeffs {
// Sub-components
bw_one_pole_coeffs smooth_cutoff_coeffs;
bw_one_pole_coeffs smooth_coeffs;
bw_one_pole_state smooth_cutoff_state;
bw_one_pole_coeffs smooth_Q_coeffs;
bw_one_pole_state smooth_Q_state;
// Coefficients
@ -158,19 +157,15 @@ struct _bw_svf_state {
};
static inline void bw_svf_init(bw_svf_coeffs *BW_RESTRICT coeffs) {
bw_one_pole_init(&coeffs->smooth_cutoff_coeffs);
bw_one_pole_set_tau(&coeffs->smooth_cutoff_coeffs, 0.05f);
bw_one_pole_set_sticky_thresh(&coeffs->smooth_cutoff_coeffs, 1e-3f);
bw_one_pole_init(&coeffs->smooth_Q_coeffs);
bw_one_pole_set_tau(&coeffs->smooth_Q_coeffs, 0.05f);
bw_one_pole_set_sticky_thresh(&coeffs->smooth_Q_coeffs, 1e-3f);
bw_one_pole_init(&coeffs->smooth_coeffs);
bw_one_pole_set_tau(&coeffs->smooth_coeffs, 0.05f);
bw_one_pole_set_sticky_thresh(&coeffs->smooth_coeffs, 1e-3f);
coeffs->cutoff = 1e3f;
coeffs->Q = 0.5f;
}
static inline void bw_svf_set_sample_rate(bw_svf_coeffs *BW_RESTRICT coeffs, float sample_rate) {
bw_one_pole_set_sample_rate(&coeffs->smooth_cutoff_coeffs, sample_rate);
bw_one_pole_set_sample_rate(&coeffs->smooth_Q_coeffs, sample_rate);
bw_one_pole_set_sample_rate(&coeffs->smooth_coeffs, sample_rate);
coeffs->t_k = 3.141592653589793f / sample_rate;
}
@ -181,11 +176,11 @@ static inline void _bw_svf_do_update_coeffs(bw_svf_coeffs *BW_RESTRICT coeffs, c
const char Q_changed = force || coeffs->Q != Q_cur;
if (cutoff_changed || Q_changed) {
if (cutoff_changed) {
cutoff_cur = bw_one_pole_process1_sticky_rel(&coeffs->smooth_cutoff_coeffs, &coeffs->smooth_cutoff_state, coeffs->cutoff);
cutoff_cur = bw_one_pole_process1_sticky_rel(&coeffs->smooth_coeffs, &coeffs->smooth_cutoff_state, coeffs->cutoff);
coeffs->t = bw_tanf_3(coeffs->t_k * cutoff_cur);
}
if (Q_changed) {
Q_cur = bw_one_pole_process1_sticky_abs(&coeffs->smooth_Q_coeffs, &coeffs->smooth_Q_state, coeffs->Q);
Q_cur = bw_one_pole_process1_sticky_abs(&coeffs->smooth_coeffs, &coeffs->smooth_Q_state, coeffs->Q);
coeffs->k = bw_rcpf_2(Q_cur);
}
const float kpt = coeffs->k + coeffs->t;
@ -196,10 +191,9 @@ static inline void _bw_svf_do_update_coeffs(bw_svf_coeffs *BW_RESTRICT coeffs, c
}
static inline void bw_svf_reset_coeffs(bw_svf_coeffs *BW_RESTRICT coeffs) {
bw_one_pole_reset_coeffs(&coeffs->smooth_cutoff_coeffs);
bw_one_pole_reset_state(&coeffs->smooth_cutoff_coeffs, &coeffs->smooth_cutoff_state, coeffs->cutoff);
bw_one_pole_reset_coeffs(&coeffs->smooth_Q_coeffs);
bw_one_pole_reset_state(&coeffs->smooth_Q_coeffs, &coeffs->smooth_Q_state, coeffs->Q);
bw_one_pole_reset_coeffs(&coeffs->smooth_coeffs);
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_cutoff_state, coeffs->cutoff);
bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_Q_state, coeffs->Q);
_bw_svf_do_update_coeffs(coeffs, 1);
}