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change bs412 implementation

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This commit is contained in:
kuba
2025-07-10 18:59:39 +02:00
parent e82c617dab
commit 9df5eeb47a
1 changed files with 12 additions and 6 deletions
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filter/bs412.c
+12 -6
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@@ -48,12 +48,18 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
mpx->average_counter = 1; mpx->average_counter = 1;
} }
float gain_target = powf(10.0f, (mpx->target - modulation_power) / 20.0f); if (modulation_power > mpx->target) {
if (gain_target > mpx->gain) { float excess_power = modulation_power - mpx->target;
mpx->gain = mpx->gain * mpx->attack + (1.0f - mpx->attack) * gain_target;
} else { if (excess_power > 0.0f && excess_power < 10.0f) {
mpx->gain = mpx->gain * mpx->release + (1.0f - mpx->release) * gain_target; float target_gain = dbr_to_deviation(-excess_power) / config.mpx_deviation;
}
target_gain = fmaxf(target_gain, 0.1f);
target_gain = fminf(target_gain, 1.0f);
mpx->gain = mpx->attack * mpx->gain + (1 - mpx->attack) * target_gain;
}
} else mpx->gain = fminf(1.0f, mpx->release * mpx->gain + (1 - mpx->release) * 1.0f);
mpx->gain = fminf(mpx->max, mpx->gain); mpx->gain = fminf(mpx->max, mpx->gain);
mpx->gain = fmaxf(0.0f, mpx->gain); mpx->gain = fmaxf(0.0f, mpx->gain);