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add bs412 max

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This commit is contained in:
KubaPro010
2026-02-15 18:47:39 +01:00
parent 1e2a82db92
commit d820603da8
3 changed files with 14 additions and 8 deletions
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5
filter/bs412.c
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@@ -13,7 +13,7 @@ inline float deviation_to_dbr(float deviation) {
return 10*log10f((deviation*deviation)/SQRT19000);
}
void init_bs412(BS412Compressor* comp, uint32_t mpx_deviation, float target_power, float attack, float release, uint32_t sample_rate) {
void init_bs412(BS412Compressor* comp, uint32_t mpx_deviation, float target_power, float attack, float release, float max_gain, uint32_t sample_rate) {
comp->mpx_deviation = mpx_deviation;
comp->avg_power = 0.0f;
comp->alpha = 1.0f / (BS412_TIME * sample_rate);
@@ -25,6 +25,7 @@ void init_bs412(BS412Compressor* comp, uint32_t mpx_deviation, float target_powe
comp->can_compress = 0;
comp->second_counter = 0;
comp->last_output = 0.0f;
comp->max_gain = max_gain;
#ifdef BS412_DEBUG
debug_printf("Initialized MPX power measurement with sample rate: %d\n", sample_rate);
#endif
@@ -82,7 +83,7 @@ float bs412_compress(BS412Compressor* comp, float audio, float sample_mpx) {
float overshoot_dbr = deviation_to_dbr(avg_deviation * comp->gain) - comp->target;
float reduction_factor = powf(10.0f, -overshoot_dbr / 10.0f);
comp->gain *= reduction_factor;
comp->gain = fmaxf(0.01f, fminf(2.82f, comp->gain));
comp->gain = fmaxf(0.01f, fminf(comp->max_gain, comp->gain));
}
comp->sample_counter++;