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bow using one pole for smoothing bw_vol

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Stefano D'Angelo 2022-11-29 18:23:30 +01:00
parent b4324f675f
commit 7034a5d85a
1 changed files with 10 additions and 10 deletions
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20
include/bw_vol.h
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@ -20,7 +20,7 @@
/*! /*!
* module_type {{{ dsp }}} * module_type {{{ dsp }}}
* version {{{ 0.2.0 }}} * version {{{ 0.2.0 }}}
* requires {{{ bw_config bw_common bw_slew_lim bw_math }}} * requires {{{ bw_config bw_common bw_math bw_one_pole }}}
* description {{{ * description {{{
* Volume control for an arbitrary number of channels. * Volume control for an arbitrary number of channels.
* }}} * }}}
@ -110,12 +110,12 @@ static inline void bw_vol_set_volume(bw_vol_coeffs *BW_RESTRICT coeffs, float va
* change at any time in future versions. Please, do not use it directly. */ * change at any time in future versions. Please, do not use it directly. */
#include <bw_math.h> #include <bw_math.h>
#include <bw_slew_lim.h> #include <bw_one_pole.h>
struct _bw_vol_coeffs { struct _bw_vol_coeffs {
// Sub-components // Sub-components
bw_slew_lim_coeffs smooth_coeffs; bw_one_pole_coeffs smooth_coeffs;
bw_slew_lim_state smooth_state; bw_one_pole_state smooth_state;
// Coefficients // Coefficients
float k; float k;
@ -125,18 +125,18 @@ struct _bw_vol_coeffs {
}; };
static inline void bw_vol_init(bw_vol_coeffs *BW_RESTRICT coeffs) { static inline void bw_vol_init(bw_vol_coeffs *BW_RESTRICT coeffs) {
bw_slew_lim_init(&coeffs->smooth_coeffs); bw_one_pole_init(&coeffs->smooth_coeffs);
bw_slew_lim_set_max_rate(&coeffs->smooth_coeffs, 1.f / 0.2f); bw_one_pole_set_tau(&coeffs->smooth_coeffs, 0.05f);
coeffs->volume = 1.f; coeffs->volume = 1.f;
} }
static inline void bw_vol_set_sample_rate(bw_vol_coeffs *BW_RESTRICT coeffs, float sample_rate) { static inline void bw_vol_set_sample_rate(bw_vol_coeffs *BW_RESTRICT coeffs, float sample_rate) {
bw_slew_lim_set_sample_rate(&coeffs->smooth_coeffs, sample_rate); bw_one_pole_set_sample_rate(&coeffs->smooth_coeffs, sample_rate);
bw_slew_lim_reset_coeffs(&coeffs->smooth_coeffs); bw_one_pole_reset_coeffs(&coeffs->smooth_coeffs);
} }
static inline void bw_vol_reset_coeffs(bw_vol_coeffs *BW_RESTRICT coeffs) { static inline void bw_vol_reset_coeffs(bw_vol_coeffs *BW_RESTRICT coeffs) {
bw_slew_lim_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->volume); bw_one_pole_reset_state(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->volume);
} }
static inline void bw_vol_update_coeffs_ctrl(bw_vol_coeffs *BW_RESTRICT coeffs) { static inline void bw_vol_update_coeffs_ctrl(bw_vol_coeffs *BW_RESTRICT coeffs) {
@ -144,7 +144,7 @@ static inline void bw_vol_update_coeffs_ctrl(bw_vol_coeffs *BW_RESTRICT coeffs)
static inline void bw_vol_update_coeffs_audio(bw_vol_coeffs *BW_RESTRICT coeffs) { static inline void bw_vol_update_coeffs_audio(bw_vol_coeffs *BW_RESTRICT coeffs) {
// tracking parameter changes is more trouble than it's worth // tracking parameter changes is more trouble than it's worth
float v = bw_slew_lim_process1(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->volume); float v = bw_one_pole_process1(&coeffs->smooth_coeffs, &coeffs->smooth_state, coeffs->volume);
coeffs->k = v * v * v; coeffs->k = v * v * v;
} }