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Add distortion Symmetry and Tone knobs

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This commit is contained in:
Armin 2026-07-15 23:51:38 +02:00
commit 1abf4f4b60
2 changed files with 21 additions and 5 deletions
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21
Source/DSP/Distortion.h
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@ -8,10 +8,12 @@ class Distortion {
public:
void prepare(double /*sr*/) {}
void setParameters(DistortionType type, float amount, float mix) {
void setParameters(DistortionType type, float amount, float symmetry, float tone) {
distType = type;
distAmount = amount;
dryWet = mix;
distSymmetry = symmetry;
distTone = tone;
dryWet = 1.0f;
}
float process(float input) {
@ -58,7 +60,15 @@ public:
break;
}
if (distAmount < 0.001f)
// Asymmetry: bias the signal before/after shaping for even-harmonic grit
wet += distSymmetry * 0.5f;
// Tone: one-pole low-pass to tame harsh high harmonics
float lpCoeff = distTone * 0.9f + 0.05f;
toneState += lpCoeff * (wet - toneState);
wet = toneState;
if (distAmount < 0.001f && std::abs(distSymmetry) < 0.001f)
return input;
return input + (wet - input) * dryWet;
@ -67,5 +77,8 @@ public:
private:
DistortionType distType = DistortionType::SoftClip;
float distAmount = 0.0f;
float dryWet = 0.0f;
float distSymmetry = 0.0f;
float distTone = 1.0f;
float dryWet = 1.0f;
float toneState = 0.0f;
};

5
Source/PluginProcessor.cpp
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@ -43,6 +43,7 @@ juce::AudioProcessorValueTreeState::ParameterLayout ChromaFlockProcessor::create
juce::AudioProcessorValueTreeState::ParameterLayout layout;
auto zeroOne = juce::NormalisableRange<float>(0.0f, 1.0f, 0.01f);
auto minusOneOne = juce::NormalisableRange<float>(-1.0f, 1.0f, 0.01f);
// LFO1 depth: fine 0.001 step, with a skew of 2.0 (value = p^2) so the
// lower knob range resolves much finer and the 0.001 step only applies
@ -153,7 +154,9 @@ juce::AudioProcessorValueTreeState::ParameterLayout ChromaFlockProcessor::create
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"distAmount", 1}, "Dist Amount", zeroOne, 0.0f));
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"distMix", 1}, "Dist Mix", zeroOne, 0.0f));
juce::ParameterID{"distSymmetry", 1}, "Dist Symmetry", minusOneOne, 0.0f));
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"distTone", 1}, "Dist Tone", zeroOne, 1.0f));
// COMPRESSOR
layout.add(std::make_unique<juce::AudioParameterFloat>(