fix high resonance collapsing to mono

SynthstromAudible · Nov 9, 2023 · 7e1d2fb · 7e1d2fb
1 parent c95ef24
commit 7e1d2fb
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Showing 2 changed files with 3 additions and 5 deletions.
diff --git a/src/deluge/dsp/filter/hpladder.cpp b/src/deluge/dsp/filter/hpladder.cpp
@@ -100,10 +100,10 @@ void HpLadderFilter::doFilterStereo(q31_t* startSample, q31_t* endSample) {
 
 	// Only saturate / anti-alias if lots of resonance
 	if (hpfProcessedResonance > 900000000) { // 890551738
-		a = getTanHAntialiased(a, &hpfLastWorkingValue, 1);
+		a = getTanHAntialiased(a, &state.hpfLastWorkingValue, 1);
 	}
 	else {
-		hpfLastWorkingValue = (uint32_t)lshiftAndSaturate<2>(a) + 2147483648u;
+		state.hpfLastWorkingValue = (uint32_t)lshiftAndSaturate<2>(a) + 2147483648u;
 		if (hpfProcessedResonance > 750000000) { // 400551738
 			a = getTanHUnknown(a, 2);
 		}

diff --git a/src/deluge/dsp/filter/hpladder.h b/src/deluge/dsp/filter/hpladder.h
@@ -41,7 +41,7 @@ class HpLadderFilter : public Filter<HpLadderFilter> {
 		BasicFilterComponent hpfHPF1;
 		BasicFilterComponent hpfLPF1;
 		BasicFilterComponent hpfHPF3;
-
+		uint32_t hpfLastWorkingValue;
 		void reset() {
 			hpfHPF1.reset();
 			hpfLPF1.reset();
@@ -50,8 +50,6 @@ class HpLadderFilter : public Filter<HpLadderFilter> {
 	};
 	[[gnu::always_inline]] inline q31_t doHPF(q31_t input, HPLadderState& state);
 
-	//config
-	uint32_t hpfLastWorkingValue;
 	bool hpfDoingAntialiasingNow;
 	int32_t hpfDivideByTotalMoveabilityLastTime;
 	int32_t hpfDivideByProcessedResonanceLastTime;