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2025-12-25 22:25:37 -06:00
parent 97de073690
commit ce5c9e76a3
6 changed files with 81 additions and 72 deletions
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7
src/synth/Synth.cpp
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@@ -31,7 +31,6 @@ inline float Synth::noteToFrequency(uint8_t note) {
return SYNTH_PITCH_STANDARD * pow(2.0f, static_cast<float>(note - SYNTH_MIDI_HOME) / static_cast<float>(SYNTH_NOTES_PER_OCTAVE));
}
// TODO: stop popping on note-offs
void Synth::handleNoteEvent(const NoteEvent& event) {
if(event.type == NoteEventType::NoteOn) {
// add note to activeNotes list
@@ -73,8 +72,7 @@ void Synth::process(float* out, uint32_t nFrames, uint32_t sampleRate) {
for(auto& p : params_) p.update(); // TODO: profile this
// process all envelopes
//gainEnvelope_.set(0.05f, 0.2f, 0.7f, getParam(ParamId::Osc1VolumeEnvR));
gainEnvelope_.setRelease(getParam(ParamId::Osc1VolumeEnvR));
gainEnvelope_.set(getParam(ParamId::Osc1VolumeEnvA), getParam(ParamId::Osc1VolumeEnvD), getParam(ParamId::Osc1VolumeEnvS), getParam(ParamId::Osc1VolumeEnvR));
float gain = gainEnvelope_.process();
// skip if no active notes
@@ -90,8 +88,7 @@ void Synth::process(float* out, uint32_t nFrames, uint32_t sampleRate) {
// TODO: wavetables
// TODO: wavetables should be scaled by their RMS for equal loudness (prelim standard = 0.707)
float sineSample = std::sin(phase_);
float squareSample = -0.707f;
if(phase_ >= M_PI) squareSample = 0.707f;
float squareSample = (phase_ >= M_PI) ? 0.707f : -0.707f;
float sawSample = phase_ * 4.0f / M_PI * frequency_ / static_cast<float>(sampleRate);
sampleOut = sawSample * gain;