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Plays notes, a chord, and sweeps through a few MIDI CC parameters
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John Edgar Park
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1 changed files with 153 additions and 0 deletions
153
DSP-G1_Synth_Parameters_Demo/DSP-G1_Synth_Parameters_Demo.ino
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153
DSP-G1_Synth_Parameters_Demo/DSP-G1_Synth_Parameters_Demo.ino
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//DSP-G1_Synth_Parameters_Demo
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//Feather M0 Express connected to DSP-G1 voice chip over TX pin
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#include <MIDI.h>
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MIDI_CREATE_DEFAULT_INSTANCE();
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static const unsigned LED = 13; // LED pin on the Feather
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void setup() {
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Serial.begin(115200);
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pinMode(LED, OUTPUT);
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MIDI.begin(1);
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/////////////DSP-G1 CC Parameter Settings
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//arguments are CC number, followed by value, and MIDI out channel
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MIDI.sendControlChange( 7, 120, 1); //volume
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MIDI.sendControlChange( 1, 0, 1); //LFO mod
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MIDI.sendControlChange(16, 6, 1); //LFO rate
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MIDI.sendControlChange(20, 0, 1); //LFO waveform 0-63 sine, 64-127 S/H
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MIDI.sendControlChange(74, 80, 1); //DC Filter cutoff - higher number lets more harmonics through
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MIDI.sendControlChange(71, 0, 1); //DC Filter resonance
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MIDI.sendControlChange(82, 32, 1); //DC Filter envelope Attack
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MIDI.sendControlChange(83, 38, 1); //DC Filter envelope Decay
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MIDI.sendControlChange(28, 64, 1); //DC Filter envelope Sustain
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MIDI.sendControlChange(29, 32, 1); //DC Filter envelope Release
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MIDI.sendControlChange(81, 57, 1); //DC Filter envelope modulation
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MIDI.sendControlChange(76, 100, 1); //DC Oscillator waveform* 100
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MIDI.sendControlChange( 4, 0, 1); //DC Oscillator wrap
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MIDI.sendControlChange(21, 0, 1); //DC Oscillator range
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MIDI.sendControlChange(93, 4, 1); //DC Oscillator detune
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MIDI.sendControlChange(73, 5, 1); //DC Oscillator envelope Attack
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MIDI.sendControlChange(75, 12, 1); //DC Oscillator envelope Decay
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MIDI.sendControlChange(31, 60, 1); //DC Oscillator envelope Sustain
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MIDI.sendControlChange(72, 80, 1); //DC Oscillator envelope Release
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// Wavforms: 0 tri, 25 squarish, 50 pulse, 75 other squarish, 100 saw
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}
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void loop() {
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digitalWrite(LED, HIGH);
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Serial.println("Playing notes");
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//Play a C
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MIDI.sendNoteOn(24,127,1); //note 24 is C1, velocity 127, channel 1)
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//Velocity isn't implemented, but it's a good habit to specify it
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delay(1000);
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//Play an E
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MIDI.sendNoteOff(24,0,1); // note 24, velocity 0, channel 1
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delay(250);
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MIDI.sendNoteOn(28,127,1); //note E1
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delay(1000);
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//Play a G
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MIDI.sendNoteOff(28,0,1);
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delay(250);
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MIDI.sendNoteOn(31,127,1); //note G1
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delay(1000);
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//Play an A#
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MIDI.sendNoteOff(31,0,1);
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delay(250);
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MIDI.sendNoteOn(34,127,1); //note G1
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delay(1000);
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MIDI.sendNoteOff(34,0,1);
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//rest
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delay(500);
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//chord
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MIDI.sendNoteOn(12,127,1); //C0
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MIDI.sendNoteOn(28,127,1); //E2
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MIDI.sendNoteOn(31,127,1); //G2
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MIDI.sendNoteOn(34,127,1); //A#2
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MIDI.sendNoteOn(48,127,1); //C3
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//hold
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delay(4000);
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//filter cutoff frequency sweep
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sweepFilterCutoff(1,15); //turn the filter cutoff knob to the right
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sweepFilterCutoff(0,15); //turn the filter cutoff knob to the left
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//filter cutoff and resonance sweeps
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sweepFilterCutoff(1,15); //turn the filter cutoff knob to the right
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sweepFilterResonance(1,15); //turn the filter resonance peak knob to the right
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sweepFilterCutoff(0,15); //turn down the cutoff
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sweepFilterResonance(0,15); //and turn down the resonance
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//hold here
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delay(2000);
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//oscillator detune
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sweepDetune(1,15); //turn up the detune
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//hold to listen to that detune
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delay(3000);
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sweepDetune(0, 15); //turn it back down
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delay(2000);
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digitalWrite(LED, LOW);
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Serial.println("Notes off");
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MIDI.sendNoteOff(12,0,1);
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MIDI.sendNoteOff(28,0,1);
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MIDI.sendNoteOff(31,0,1);
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MIDI.sendNoteOff(34,0,1);
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MIDI.sendNoteOff(48,0,1);
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delay(200);
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}
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void sweepFilterCutoff(int dir,int rate){ //dir 0 down, dir 1 up. rate in ms, e.g. 30
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if(dir==1){ //sweep up
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for(int i = 0; i < 128; i++){
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MIDI.sendControlChange(74,i,1);
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delay(rate);
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Serial.print("Filter cutoff: "); Serial.println(i);
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}
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}
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else{ //sweep down
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for(int i = 127; i >=0 ; i--){
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MIDI.sendControlChange(74,i,1);
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delay(rate);
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Serial.print("Filter cutoff: "); Serial.println(i);
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}
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}
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}
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void sweepDetune(int dir,int rate){ //dir 0 down, dir 1 up. rate in ms, e.g. 30
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if(dir==1){ //sweep up
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for(int i = 0; i < 128; i++){
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MIDI.sendControlChange(93,i,1);
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delay(rate);
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Serial.print("Detune: "); Serial.println(i);
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}
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}
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else{ //sweep down
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for(int i = 127; i >=0 ; i--){
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MIDI.sendControlChange(93,i,1);
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delay(rate);
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Serial.print("Detune: "); Serial.println(i);
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}
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}
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}
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void sweepFilterResonance(int dir,int rate){ //dir 0 down, dir 1 up. rate in ms, e.g. 30
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if(dir==1){ //sweep up
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for(int i = 0; i < 100; i++){ //127 has loads of feedback
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MIDI.sendControlChange(71,i,1);
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delay(rate);
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Serial.print("Filter resonance: "); Serial.println(i);
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}
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}
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else{ //sweep down
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for(int i = 127; i >=0 ; i--){
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MIDI.sendControlChange(71,i,1);
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delay(rate);
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Serial.print("Filter resonance: "); Serial.println(i);
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}
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}
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}
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