added glide, but still needs debugging
This commit is contained in:
Oleksiy
130
Acid/Acid.ino
130
Acid/Acid.ino
@ -7,18 +7,17 @@
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// This code is licenced under GPL v3 or later
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// todo:
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// add glide handling
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// make a glide on/off swithc instead of drone, both for MIDI and CV (sample pitch on gate)
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// debug glide (slides down from lower notes?)
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// add accent handling
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// bring back manual triggering (test conflicts with midi)
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#include <Mozzi.h>
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#include <MIDI.h>
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#include <Oscil.h>
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#include <MetaOscil.h>
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//#include <StateVariable.h>
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#include <ResonantFilter.h>
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//#include <ADSR.h>
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#include <Ead.h>
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#include <Portamento.h>
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#include <mozzi_midi.h>
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#include <IntMap.h>
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#include <FixMath.h>
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@ -101,42 +100,57 @@ MetaOscil<SAW_MAX_138_AT_16384_512_NUM_CELLS, MOZZI_AUDIO_RATE, 16> aSaw {&aSaw1
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IntMap kMapNote( 0, 4095, 24 * pitchSubSteps, 84 * pitchSubSteps );
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IntMap kMapResonance( 0, 1023, 0, 255 );
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IntMap kMapCutoff( 0, 1023, 20, 127 );
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IntMap kMapCutoff( 0, 1023, 26, 100 );
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IntMap kMapAttack( 0, 1023, 3, 100 );
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IntMap kMapDecay( 0, 1023, 200, 2000 );
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IntMap kMapEnvMod( 0, 1023, 0, 255 );
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IntMap kMapEnvMod( 0, 1023, 0, 160 );
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IntMap kMapDrive( 0, 1023, 0, 400 );
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//ADSR <MOZZI_CONTROL_RATE, MOZZI_CONTROL_RATE> envelope;
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Ead kEnvelope(MOZZI_CONTROL_RATE);
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//StateVariable <LOWPASS> lpf;
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LowPassFilter lpfr;
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Portamento <MOZZI_CONTROL_RATE> glide;
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//Global variables
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byte gain;
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bool MIDINotePlaying;
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bool gateIsHigh = false;
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float noteFreq;
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Q16n16 noteFreq;
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bool envSwitchVal;
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bool droneSwitchVal;
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byte MIDIChannel;
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byte memCode = "a"; //a = MIDI Channel stored in 1023
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int driveAmount;
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byte notePlaying;
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// long debugMaxSignal = 0;
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// long debugMinSignal = 0;
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void MIDINoteOn(byte channel, byte note, byte velocity) {
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noteFreq = mtof((int) note);
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kEnvelope.start();
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//envelope.noteOn();
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notePlaying = note;
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noteFreq = Q16n16_mtof((int) note);
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if (!MIDINotePlaying || !droneSwitchVal) {
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glide.setTime(0);
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glide.start(note);
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kEnvelope.start();
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} else {
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glide.setTime(GLIDE_TIME);
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glide.start(note);
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}
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MIDINotePlaying = true;
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digitalWrite(LED, LOW);
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}
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void MIDINoteOff(byte channel, byte note, byte velocity) {
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//envelope.noteOff();
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MIDINotePlaying = false;
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digitalWrite(LED, HIGH);
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if (note == notePlaying || !droneSwitchVal) {
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MIDINotePlaying = false;
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digitalWrite(LED, HIGH);
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glide.setTime(0);
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}
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}
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long softClip(long input) {
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int threshold = 2048;
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int threshold = 24000;
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if (input < -threshold) {
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return -threshold + (input + threshold) / 4;
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} else if (input > threshold) {
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@ -153,7 +167,7 @@ void setup(){
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pinMode(DroneSwitch, INPUT_PULLUP);
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//MIDI Channel setup
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if(!digitalRead(GateIn)) { //&& !digitalRead(DroneSwitch) && !digitalRead(EnvSwitch)) { //MIDI setup mode, first knob you rotate = MIDI channel
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if(!digitalRead(GateIn)) { //MIDI setup mode, first knob you rotate = MIDI channel
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int knob1Orig = analogRead(Knob1);
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int knob2Orig = analogRead(Knob2);
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int knob3Orig = analogRead(Knob3);
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@ -161,7 +175,7 @@ void setup(){
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int knobAOrig = analogRead(KnobA);
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int knobDROrig = analogRead(KnobDR);
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int knobSOrig = analogRead(KnobS);
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int threshhold = 50; //To reduce noise from the input, needs testing and fine-tuning
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int threshhold = 50; //To reduce noise from the input
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while(true) {
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if(abs(analogRead(Knob1) - knob1Orig) > threshhold) {
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MIDIChannel = 1;
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@ -227,9 +241,6 @@ void setup(){
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startMozzi();
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//envelope.setAttackLevel(255);
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kEnvelope.setAttack(3);
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digitalWrite(LED, HIGH);
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}
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@ -247,74 +258,79 @@ void updateControl(){
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int knobAVal = mozziAnalogRead(KnobA);
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int knobDRVal = mozziAnalogRead(KnobDR);
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int knobSVal = mozziAnalogRead(KnobS);
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bool droneSwitchVal = digitalRead(DroneSwitch);
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droneSwitchVal = digitalRead(DroneSwitch);
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envSwitchVal = digitalRead(EnvSwitch);
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bool gateInVal = !digitalRead(GateIn);
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int CVInVal = mozziAnalogRead(CVIn);
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//Remap the values and assign to parameter
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//Remap the values and assign to parameters
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int cutoff = kMapCutoff(knob1Val);
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int resonance = kMapResonance(knob2Val);
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int envMod = kMapEnvMod(knob3Val);
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driveAmount = kMapDrive(knob4Val);
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//Set pitch and play notes on trigger
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if (!MIDINotePlaying) {
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noteFreq = mtof((float) kMapNote(CVInVal << 2) / pitchSubSteps);
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digitalWrite(LED, !gateInVal);
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if (gateInVal && !gateIsHigh) {
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gateIsHigh = true;
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kEnvelope.start();
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//envelope.noteOn();
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} else if (!gateInVal && gateIsHigh) {
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gateIsHigh = false;
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//envelope.noteOff();
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}
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} /*else if (MIDINotePlaying && !envelope.playing()) {
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MIDINotePlaying = false;
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}*/
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//Update Filter settings
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//lpf.setResonance(resonance);
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// if (!MIDINotePlaying) {
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// noteFreq = mtof((float) kMapNote(CVInVal << 2) / pitchSubSteps);
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// digitalWrite(LED, !gateInVal);
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// if (gateInVal && !gateIsHigh) {
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// gateIsHigh = true;
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// kEnvelope.start();
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// } else if (!gateInVal && gateIsHigh) {
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// gateIsHigh = false;
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// }
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// }
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//Update Envelope Settings
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int attackTime = kMapAttack(knobAVal);
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int decayReleaseTime = kMapDecay(knobDRVal);
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//int sustainLevel = kMapSustain(knobSVal);
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kEnvelope.setDecay(decayReleaseTime);
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kEnvelope.setAttack(attackTime);
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//envelope.setDecayLevel(sustainLevel);
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//envelope.setTimes(attackTime, decayReleaseTime, 30000, decayReleaseTime); //30000 is so the note will sustain 30 seconds unless a noteOff comes
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//Calculate makeup Gain
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//makeupGain = (256L * 127) / (127 + driveAmount); // Q8 fixed-point compensation factor
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//Set Oscilator Frequency
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float oscFreq = noteFreq;
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aSquare.setFreq(oscFreq);
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aSaw.setFreq(oscFreq);
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Q16n16 oscFreq;
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oscFreq = glide.next();
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aSquare.setFreq_Q16n16(oscFreq);
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aSaw.setFreq_Q16n16(oscFreq);
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//envelope.update();
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//int env = envelope.next();
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int env = kEnvelope.next();
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if(!droneSwitchVal) {
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//if(!droneSwitchVal) {
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gain = env;
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} else {
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gain = 255;
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}
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//lpf.setCentreFreq(constrain(cutoff + (((long) env * envMod) >> 8), 20, 4096));
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//} else {
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// gain = 255;
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//}
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lpfr.setCutoffFreqAndResonance(constrain(cutoff + (((long)env * envMod * cutoff)>>16), 0, 255), resonance);
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// static int debugCounter = 0;
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// if (++debugCounter >= 100) { // adjust to taste - print every ~100 control cycles
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// Serial.print("min: "); Serial.print(debugMinSignal);
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// Serial.print(" max: "); Serial.println(debugMaxSignal);
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// debugMaxSignal = 0;
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// debugMinSignal = 0;
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// debugCounter = 0;
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// }
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}
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AudioOutput updateAudio(){
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long signal;
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if(envSwitchVal) {
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signal = (aSquare.next() * 3) >> 2;// 0.75 gain to ~ match saw level
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signal = (aSquare.next() * 3) >> 2; // tricky way to set 0.75 gain to ~ match saw level
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} else {
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signal = aSaw.next();
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}
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signal = lpfr.next(signal); //filter
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signal = (signal * gain); //envelope
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//signal = softClip((signal * (127 + driveAmount)) >> 6); //overdrive
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//signal = softClip((signal * (127 + driveAmount)) >> 9); //overdrive
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//signal = (signal * makeupGain) >> 7; //makeup gain compensation
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// if (signal > debugMaxSignal) debugMaxSignal = signal;
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// if (signal < debugMinSignal) debugMinSignal = signal;
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return MonoOutput::fromNBit(17, signal).clip();
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}
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@ -1,8 +1,7 @@
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//Settings
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const int pitchSubSteps = 16; //set how many steps are there between semitones. set to 1 to quantize to semitones
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const int driveAmount = 250;
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const bool oversamplingEnabled = false; //makes V/OCT tracking more precise, but adds a little portamento
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#define MOZZI_CONTROL_RATE 256
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#define GLIDE_TIME 150
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//Hardware Definitions
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#define Knob1 A6 //Intensity
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