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Code Issues Activity

clip bs412 and make it simpler to understand, both by me and the compiler

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This commit is contained in:
KubaPro010
2025-07-08 23:04:38 +02:00
parent dced0383d5
commit 58a37da27c
3 changed files with 10 additions and 9 deletions
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10
filter/bs412.c
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@@ -11,7 +11,8 @@ inline float deviation_to_dbr(float deviation) {
return 10.0f * (log2f(deviation) - LOG2_19000) * 0.30103f;
}
void init_bs412(BS412Compressor* mpx, float target_power, float attack, float release, int sample_rate) {
void init_bs412(BS412Compressor* mpx, float mpx_deviation, float target_power, float attack, float release, int sample_rate) {
mpx->mpx_deviation = mpx_deviation;
mpx->sample_counter = 0;
mpx->sample = 0;
mpx->sample_rate = sample_rate;
@@ -24,8 +25,8 @@ void init_bs412(BS412Compressor* mpx, float target_power, float attack, float re
#endif
}
float bs412_compress(BS412Compressor* mpx, float deviation) {
mpx->sample += deviation * deviation; // rmS
float bs412_compress(BS412Compressor* mpx, float sample) {
mpx->sample += sample * sample * mpx->mpx_deviation; // rmS
mpx->sample_counter++;
float inv_counter = 1.0f / mpx->sample_counter;
@@ -52,6 +53,5 @@ float bs412_compress(BS412Compressor* mpx, float deviation) {
else
mpx->gain = mpx->gain * mpx->release + (1.0f - mpx->release) * gain_target;
return deviation*mpx->gain;
return fminf(sample*mpx->gain, dbr_to_deviation(mpx->target*1.1f));
}

5
filter/bs412.h
View File

@@ -11,6 +11,7 @@
typedef struct
{
int mpx_deviation;
int sample_counter;
int sample_rate;
float target;
@@ -23,5 +24,5 @@ typedef struct
float dbr_to_deviation(float dbr);
float deviation_to_dbr(float deviation);
void init_bs412(BS412Compressor *mpx, float target_power, float attack, float release, int sample_rate);
float bs412_compress(BS412Compressor *mpx, float deviation);
void init_bs412(BS412Compressor *mpx, float mpx_deviation, float target_power, float attack, float release, int sample_rate);
float bs412_compress(BS412Compressor *mpx, float sample);