Oleksiy/WS-1.0-Firmwares
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Switched back to SVF bacause of the instability of Resonant Filter

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Oleksiy
2026-09-20 01:13:50 +03:00
parent 7e4c0c62b7
commit 75f3211629
1 changed files with 19 additions and 9 deletions
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28
Acid/Acid.ino
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@ -7,7 +7,6 @@
// This code is licenced under GPL v3 or later
// todo:
// debug accent handling that overloads the filter, also accent can be too short or too long if it's relying on midi note
// add overdrive
// frequency from CV (noteFreq) could be Q16n16 for consistency
@ -15,7 +14,8 @@
#include <MIDI.h>
#include <Oscil.h>
#include <MetaOscil.h>
#include <ResonantFilter.h>
//#include <ResonantFilter.h>
#include <StateVariable.h>
#include <Ead.h>
#include <Portamento.h>
#include <mozzi_midi.h>
@ -99,16 +99,20 @@ Oscil <SAW_MAX_8192_AT_16384_512_NUM_CELLS, MOZZI_AUDIO_RATE> aSaw8192(SAW_MAX_8
MetaOscil<SAW_MAX_138_AT_16384_512_NUM_CELLS, MOZZI_AUDIO_RATE, 16> aSaw {&aSaw138, &aSaw154, &aSaw182, &aSaw240, &aSaw292, &aSaw341, &aSaw390, &aSaw431, &aSaw512, &aSaw630, &aSaw744, &aSaw1170, &aSaw1638, &aSaw2730, &aSaw4096, &aSaw8192};
IntMap kMapNote( 0, 4095, 24 * pitchSubSteps, 84 * pitchSubSteps );
IntMap kMapCutoff( 0, 1023, 26, 100 );
//IntMap kMapCutoff( 0, 1023, 26, 100 ); //for lpf
//IntMap kMapResonance( 0, 1023, 0, 255 );
IntMap kMapCutoff( 0, 1023, 400, 3600 );
IntMap kMapResonance( 0, 1023, 200, 64 );
IntMap kMapEnvMod( 0, 1023, 0, 140 );
IntMap kMapResonance( 0, 1023, 0, 255 );
IntMap kMapDrive( 0, 1023, 0, 400 );
IntMap kMapAttack( 0, 1023, 1, 100 );
IntMap kMapDecay( 0, 1023, 100, 1500 );
IntMap kMapAccentLevel( 0, 1023, 0, 128 );
Ead kEnvelope(MOZZI_CONTROL_RATE);
LowPassFilter lpfr;
//LowPassFilter lpf;
StateVariable <LOWPASS> svf;
Portamento <MOZZI_CONTROL_RATE> kGlide;
//Global variables
@ -271,8 +275,11 @@ void updateControl(){
//Remap the values and assign to parameters
int accentLevel = kMapAccentLevel(knobSVal);
int baseCutoff = kMapCutoff(knob1Val);
int cutoff = accent? (baseCutoff + (((long)accentLevel * (100 - baseCutoff)) >> 7)) : baseCutoff;
int resonance = accent? (255 - (((long)(128 - accentLevel) * (255 - kMapResonance(knob2Val))) >> 7)) : kMapResonance(knob2Val);
//int cutoff = accent? (baseCutoff + (((long)accentLevel * (100 - baseCutoff)) >> 7)) : baseCutoff; //lpf version
int cutoff = accent? (baseCutoff + (((long)accentLevel * (3600 - baseCutoff)) >> 7)) : baseCutoff; //svf version
//int resonance = accent? (255 - (((long)(128 - accentLevel) * (255 - kMapResonance(knob2Val))) >> 7)) : kMapResonance(knob2Val); //lpf version
int baseResonance = kMapResonance(knob2Val);
int resonance = accent? (baseResonance - (((long)accentLevel * (baseResonance - 64)) >> 7)) : baseResonance;
int envMod = kMapEnvMod(knob3Val);
driveAmount = kMapDrive(knob4Val);
@ -319,7 +326,9 @@ void updateControl(){
gain = accent? constrain(env + (((long)env * accentLevel) >> 7), 0, 255) : env; //needs finetuning
lpfr.setCutoffFreqAndResonance(constrain(cutoff + (((long)env * envMod * cutoff)>>16), 0, 255), resonance);
//lpf.setCutoffFreqAndResonance(constrain(cutoff + (((long)env * envMod * cutoff)>>16), 0, 255), resonance);
svf.setCentreFreq(cutoff + (((long)env * envMod * cutoff)>>16));
svf.setResonance(resonance);
}
AudioOutput updateAudio(){
@ -329,7 +338,8 @@ AudioOutput updateAudio(){
} else {
signal = aSaw.next();
}
signal = lpfr.next(signal); //filter
//signal = lpf.next(signal); //filter
signal = svf.next(signal);
signal = (signal * gain); //envelope
//signal = softClip((signal * (127 + driveAmount)) >> 9); //overdrive
//signal = (signal * makeupGain) >> 7; //makeup gain compensation