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Add brickwall limiter FX section

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Armin 2026-07-15 23:49:51 +02:00
commit 6cd7d4f3ba
4 changed files with 161 additions and 49 deletions
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27
Source/PluginProcessor.cpp
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@ -180,6 +180,19 @@ juce::AudioProcessorValueTreeState::ParameterLayout ChromaFlockProcessor::create
juce::NormalisableRange<float>(0.05f, 20.0f, 0.01f, 0.4f), 2.0f));
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"autoPanDepth", 1}, "Pan Depth", zeroOne, 0.0f));
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"autoPanPhase", 1}, "Pan Phase", zeroOne, 0.0f));
// LIMITER
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"limiterThreshold", 1}, "Limiter Threshold",
juce::NormalisableRange<float>(0.0f, 1.0f, 0.001f, 0.3f), 1.0f));
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"limiterCeiling", 1}, "Limiter Ceiling",
juce::NormalisableRange<float>(0.0f, 1.0f, 0.001f, 0.3f), 0.9f));
layout.add(std::make_unique<juce::AudioParameterFloat>(
juce::ParameterID{"limiterRelease", 1}, "Limiter Release",
juce::NormalisableRange<float>(1.0f, 500.0f, 0.1f), 50.0f));
// LFO 1
layout.add(std::make_unique<juce::AudioParameterFloat>(
@ -256,6 +269,7 @@ void ChromaFlockProcessor::prepareToPlay(double sampleRate, int samplesPerBlock)
synth.setCurrentPlaybackSampleRate(sampleRate);
distortion.prepare(sampleRate);
compressor.prepare(sampleRate);
limiter.prepare(sampleRate);
delay.prepare(sampleRate);
reverbFX.prepare(sampleRate);
autoPanPhase = 0.0f;
@ -402,6 +416,13 @@ void ChromaFlockProcessor::processBlock(juce::AudioBuffer<float>& buffer, juce::
}
delay.setParameters(delayTimeMs, getParam("delayFeedback"), getParam("delayMix"));
reverbFX.setParameters(getParam("reverbSize"), getParam("reverbDamping"), 0.8f, getParam("reverbMix"));
limiter.setParameters(getParam("limiterThreshold"), getParam("limiterCeiling"),
getParam("limiterRelease"));
// Master fader applies a natural (perceptual) taper and is the final gain
// stage, so it always controls output level regardless of the limiter.
float masterValue = getParam("masterLevel");
float masterGain = masterValue * masterValue;
// FX processing: distortion → compression → auto-pan
int numSamples = buffer.getNumSamples();
@ -421,9 +442,13 @@ void ChromaFlockProcessor::processBlock(juce::AudioBuffer<float>& buffer, juce::
left = compressor.process(left);
right = compressor.process(right);
// Brickwall limiter (stereo)
left = limiter.process(left);
right = limiter.process(right);
// Auto-pan
if (panDepth > 0.001f) {
float panLfo = std::sin(autoPanPhase * twoPi);
float panLfo = std::sin((autoPanPhase + autoPanPhaseOffset) * twoPi);
float leftGain = 1.0f - panDepth * 0.5f * (1.0f + panLfo);
float rightGain = 1.0f - panDepth * 0.5f * (1.0f - panLfo);
left *= leftGain;