radio95/fm95
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Code Issues Activity

set target to -100 to disable it

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KubaPro010
2025-12-30 21:14:08 +01:00
parent 966fa2a64c
commit a5149126c0
1 changed files with 15 additions and 6 deletions
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21
filter/bs412.c
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@@ -41,12 +41,6 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
float avg_deviation = sqrtf(avg_power) * sqrtf(2); float avg_deviation = sqrtf(avg_power) * sqrtf(2);
float modulation_power = deviation_to_dbr(avg_deviation); float modulation_power = deviation_to_dbr(avg_deviation);
#ifdef BS412_DEBUG
if(mpx->average_counter % mpx->sample_rate == 0) {
debug_printf("MPX power: %.2f dBr with gain %.2fx (%.2f dBr)\n", modulation_power, mpx->gain, deviation_to_dbr(avg_deviation * mpx->gain));
}
#endif
if (mpx->average_counter >= mpx->sample_rate * 60) { if (mpx->average_counter >= mpx->sample_rate * 60) {
#ifdef BS412_DEBUG #ifdef BS412_DEBUG
debug_printf("Resetting MPX power measurement\n"); debug_printf("Resetting MPX power measurement\n");
@@ -55,6 +49,21 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
mpx->average_counter = 1; mpx->average_counter = 1;
} }
if(mpx->target <= -100.0f) {
#ifdef BS412_DEBUG
if(mpx->average_counter % mpx->sample_rate == 0) {
debug_printf("MPX power: %.2f dBr (%.1f Hz)\n", modulation_power, avg_deviation);
}
#endif
return sample;
}
#ifdef BS412_DEBUG
if(mpx->average_counter % mpx->sample_rate == 0) {
debug_printf("MPX power: %.2f dBr with gain %.2fx (%.2f dBr)\n", modulation_power, mpx->gain, deviation_to_dbr(avg_deviation * mpx->gain));
}
#endif
float target_gain = powf(10.0f, (mpx->target - modulation_power) / 10.0f); float target_gain = powf(10.0f, (mpx->target - modulation_power) / 10.0f);
if (modulation_power > mpx->target) { if (modulation_power > mpx->target) {
mpx->gain = mpx->attack * mpx->gain + (1.0f - mpx->attack) * target_gain; mpx->gain = mpx->attack * mpx->gain + (1.0f - mpx->attack) * target_gain;