#include #include // oscillator #include // table for Oscils to play #include #include // maps unpredictable inputs to a range #include #define CONTROL_RATE 64 bool gate = 0; // desired carrier frequency max and min, for AutoMap const int MIN_CARRIER_FREQ = 22; const int MAX_CARRIER_FREQ = 440; const int MIN = 1; const int MAX = 10; const int MIN_2 = 1; const int MAX_2 = 15; // desired intensity max and min, for AutoMap, note they're inverted for reverse dynamics const int MIN_INTENSITY = 700; const int MAX_INTENSITY = 10; // desired mod speed max and min, for AutoMap, note they're inverted for reverse dynamics const int MIN_MOD_SPEED = 10000; const int MAX_MOD_SPEED = 1; AutoMap kMapCarrierFreq(0,1023,MIN_CARRIER_FREQ,MAX_CARRIER_FREQ); AutoMap kMapIntensity(0,1023,MIN_INTENSITY,MAX_INTENSITY); AutoMap kMapModSpeed(0,1023,MIN_MOD_SPEED,MAX_MOD_SPEED); AutoMap mapThis(0,1023,MIN,MAX); AutoMap mapThisToo(0,1023,MIN_2,MAX_2); //Mapping the knob pins const int CONTROLL1 = 0; const int CONTROLL2 = 1; const int CONTROLL3 = 2; const int CONTROLL4 = 3; Oscil aCarrier(COS2048_DATA); Oscil aModulator(COS2048_DATA); Oscil kIntensityMod(COS2048_DATA); int mod_ratio = 5; // brightness (harmonics) long fm_intensity; // carries control info from updateControl to updateAudio // smoothing for intensity to remove clicks on transitions float smoothness = 0.95f; Smooth aSmoothIntensity(smoothness); const float notefreqs[128] = {8.176, 8.662, 9.177, 9.723, 10.301, 10.913, 11.562, 12.25, 12.978, 13.75, 14.568, 15.434, 16.352, 17.324, 18.354, 19.445, 20.602, 21.827, 23.125, 24.5, 25.957, 27.5, 29.135, 30.868, 32.703, 34.648, 36.708, 38.891, 41.203, 43.654, 46.249, 48.999, 51.913, 55, 58.27, 61.735, 65.406, 69.296, 73.416, 77.782, 82.407, 87.307, 92.499, 97.999, 103.826, 110, 116.541, 123.471, 130.813, 138.591, 146.832, 155.563, 164.814, 174.614, 184.997, 195.998, 207.652, 220, 233.082, 246.942, 261.626, 277.183, 293.665, 311.127, 329.628, 349.228, 369.994, 391.995, 415.305, 440, 466.164, 493.883, 523.251, 554.365, 587.33, 622.254, 659.255, 698.456, 739.989, 783.991, 830.609, 880, 932.328, 987.767, 1046.502, 1108.731, 1174.659, 1244.508, 1318.51, 1396.913, 1479.978, 1567.982, 1661.219, 1760, 1864.655, 1975.533, 2093.005, 2217.461, 2349.318, 2489.016, 2637.02, 2793.826, 2959.955, 3135.963, 3322.438, 3520, 3729.31, 3951.066, 4186.009, 4434.922, 4698.636, 4978.032, 5274.041, 5587.652, 5919.911, 6271.927, 6644.875, 7040, 7458.62, 7902.133, 8372.018, 8869.844, 9397.273, 9956.063, 10548.08, 11175.3, 11839.82, 12543.85}; int carrier_freq = 440; void noteOn(byte channel, byte note, byte velocity) { carrier_freq = notefreqs[(int) note]; gate = 1; } void noteOff(byte channel, byte note, byte velocity) { gate = 0; } void setup(){ startMozzi(); pinMode(LED_BUILTIN_TX,INPUT); //switch rx and tx leds of, so they don't blink on midi pinMode(LED_BUILTIN_RX,INPUT); } void updateControl(){ midiEventPacket_t rx; do { rx = MidiUSB.read(); if (rx.header == 0x09) { noteOn(rx.byte1, rx.byte2, rx.byte3); } else if (rx.header == 0x08) { noteOff(rx.byte1, rx.byte2, rx.byte3); } } while (rx.header != 0); int freqVal = mozziAnalogRead(CONTROLL3); // value is 0-1023 int FRQ = mapThis(freqVal); int knob2 = mozziAnalogRead(CONTROLL4); // value is 0-1023 int knob2Val = mapThis(knob2); //calculate the modulation frequency to stay in ratio int mod_freq = carrier_freq * mod_ratio * FRQ; // set the FM oscillator frequencies aCarrier.setFreq(carrier_freq); aModulator.setFreq(mod_freq); // read the light dependent resistor on the width Analog input pin int LDR1_value= mozziAnalogRead(CONTROLL1); // value is 0-1023 int LDR1_calibrated = kMapIntensity(LDR1_value); // calculate the fm_intensity fm_intensity = ((long)LDR1_calibrated * knob2Val * (kIntensityMod.next()+128))>>8; // shift back to range after 8 bit multiply // read the light dependent resistor on the speed Analog input pin int LDR2_value= mozziAnalogRead(CONTROLL2); // value is 0-1023 // use a float here for low frequencies float mod_speed = (float)kMapModSpeed(LDR2_value)/1000; kIntensityMod.setFreq(mod_speed); } int updateAudio(){ long modulation = aSmoothIntensity.next(fm_intensity) * aModulator.next(); if (gate == 1) { return aCarrier.phMod(modulation);//(int)(envelope.next() * aCarrier.phMod(modulation))>>8; } } void loop(){ audioHook(); }