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mpx seperation

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KubaPro010
2026-02-15 18:18:54 +01:00
parent 743df55b00
commit 73396a6cba
5 changed files with 20 additions and 16 deletions
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10
filter/bs412.c
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@@ -30,7 +30,9 @@ void init_bs412(BS412Compressor* mpx, uint32_t mpx_deviation, float target_power
#endif
}
float bs412_compress(BS412Compressor* mpx, float sample) {
float bs412_compress(BS412Compressor* mpx, float audio, float sample_mpx) {
float combined = audio + sample_mpx;
mpx->avg_power += mpx->alpha * ((mpx->last_output * mpx->last_output * mpx->mpx_deviation * mpx->mpx_deviation) - mpx->avg_power);
float avg_deviation = sqrtf(mpx->avg_power);
@@ -44,7 +46,7 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
}
#endif
mpx->sample_counter++;
return sample;
return combined;
}
if(mpx->sample_counter > mpx->sample_rate) {
@@ -65,7 +67,7 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
if(mpx->can_compress == 0) {
mpx->sample_counter++;
return sample;
return combined;
}
float target_gain = powf(10.0f, (mpx->target - modulation_power) / 10.0f);
@@ -77,7 +79,7 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
mpx->gain = fmaxf(0.0f, fminf(2.0f, mpx->gain));
float output_sample = sample * mpx->gain;
float output_sample = (audio * mpx->gain) + mpx;
if(deviation_to_dbr(avg_deviation * mpx->gain) > mpx->target && deviation_to_dbr(avg_deviation) < mpx->target) {
// Gain is too much, reduce
float overshoot_dbr = deviation_to_dbr(avg_deviation * mpx->gain) - mpx->target;

4
filter/bs412.h
View File

@@ -27,8 +27,8 @@ typedef struct
float last_output;
} BS412Compressor;
float dbr_to_deviation(float dbr);
// float dbr_to_deviation(float dbr);
float deviation_to_dbr(float deviation);
void init_bs412(BS412Compressor *mpx, uint32_t mpx_deviation, float target_power, float attack, float release, uint32_t sample_rate);
float bs412_compress(BS412Compressor *mpx, float average);
float bs412_compress(BS412Compressor *mpx, float audio, float sample_mpx);