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@arion
Created May 11, 2017 05:31
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#include <MozziGuts.h>
#include <Oscil.h>
#include <tables/chum9_int8.h> // recorded audio wavetable
#include <tables/cos512_int8.h> // for filter modulation
#include <LowPassFilter.h>
#include <mozzi_rand.h> // for rand()
#include <EventDelay.h> // for scheduling events
#define CONTROL_RATE 64 // powers of 2 please
const int LDR0_PIN=A0;
const int LDR1_PIN=A1;
const int LDR2_PIN=A2;
const int LDR3_PIN=A8;
const int LDR4_PIN=A3;
Oscil<CHUM9_NUM_CELLS, AUDIO_RATE> aCrunchySound1(CHUM9_DATA); //audio oscillator
Oscil<CHUM9_NUM_CELLS, AUDIO_RATE> aCrunchySound2(CHUM9_DATA); //audio oscillator
Oscil<COS512_NUM_CELLS, CONTROL_RATE> kFilterMod1(COS512_DATA); // to modulate filter frequency
Oscil<COS512_NUM_CELLS, CONTROL_RATE> kFilterMod2(COS512_DATA); // to modulate filter frequency
LowPassFilter lpf1;
LowPassFilter lpf2;
EventDelay kWhoseTurnDelay;
int lastkv = 0;
int lastkv1 = 0;
int lastkv2 = 0;
int lastkv3 = 0;
int lastkv4 = 0;
int lastfv = 4;
int fvdir = 3;
unsigned int speed_lfo;
const unsigned int MILLIS_PER_SWEEP = 500;
void setup(){
startMozzi(CONTROL_RATE);
aCrunchySound1.setFreq(2.f);
aCrunchySound2.setFreq(1.f);
kFilterMod1.setFreq(1.3f);
kFilterMod2.setFreq(0.7f);
lpf1.setResonance(180);
lpf2.setResonance(220);
kWhoseTurnDelay.set(MILLIS_PER_SWEEP);
kWhoseTurnDelay.start();
Serial.begin(9600);
}
void updateControl(){
int knob1_value = mozziAnalogRead(LDR0_PIN);
knob1_value = map(knob1_value, 0, 800, 0, 255);
// map the modulation depth into the filter range, 0-255 to represent 0-8192 Hz
if(lastkv1 != knob1_value) {
lpf2.setResonance(knob1_value);
lastkv1 = knob1_value;
}
int knob2_value = mozziAnalogRead(LDR1_PIN);
knob2_value = map(knob2_value, 0, 800, 0, 255);
if(lastkv2 != knob2_value) {
lpf1.setResonance(knob2_value);
lastkv2 = knob2_value;
}
int knob3_value = mozziAnalogRead(LDR2_PIN);
knob3_value = map(knob3_value, 0, 800, 16.0f, 0.1f);
if(lastkv3 != knob3_value) {
kFilterMod1.setFreq(knob3_value);
lastkv3 = knob3_value;
}
int knob4_value = mozziAnalogRead(LDR3_PIN);
knob4_value = map(knob4_value, 0, 800, 16.0f, 0.1f);
if(lastkv4 != knob4_value) {
kFilterMod2.setFreq(knob4_value);
lastkv4 = knob4_value;
}
int knob_value = mozziAnalogRead(LDR4_PIN);
knob_value = map(knob_value, 250, 1024, 5, 250);
//Serial.println(knob_value);
// map the modulation depth into the filter range, 0-255 to represent 0-8192 Hz
if(lastkv != knob_value) {
//aCrunchySound1.setFreq(knob_value);
kWhoseTurnDelay.set(knob_value);
lastkv = knob_value;
}
if(kWhoseTurnDelay.ready()){
int freq_value = (byte) lastfv % 18;
if(lastfv%18>=15 || lastfv<=0) {
fvdir = -fvdir;
}
lastfv = lastfv + fvdir;
kWhoseTurnDelay.start();
aCrunchySound1.setFreq(freq_value);
}
byte cutoff_freq1 = 100 + kFilterMod1.next()/2; // 100 ± 63
lpf1.setCutoffFreq(cutoff_freq1);
// also update lpf2 cutoff
byte cutoff_freq2 = 70 + kFilterMod2.next()/4; // 70 ± 31
lpf2.setCutoffFreq(cutoff_freq2);
}
int updateAudio(){
return (((char)lpf1.next(aCrunchySound1.next()))>>1) + (char)lpf2.next(aCrunchySound2.next());
}
void loop(){
audioHook();
}
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