Fork fakebitpolytechnic/cheapsynth

1 files changed, 0 insertions, 434 deletions

diff --git a/WaveClass4PolyPlusLPF_BETA/WaveClass4PolyPlusLPF_BETA.ino b/WaveClass4PolyPlusLPF_BETA/WaveClass4PolyPlusLPF_BETA.ino
deleted file mode 100644
index 8469753..0000000
--- a/WaveClass4PolyPlusLPF_BETA/WaveClass4PolyPlusLPF_BETA.ino
+++ /dev/null
@@ -1,434 +0,0 @@
-
-/*  Example of a sound being triggered by MIDI input.
- *
- *  Demonstrates playing notes with Mozzi in response to MIDI input,
- *  using the standard Arduino MIDI library:
- *  http://playground.arduino.cc/Main/MIDILibrary
- *
- *  Mozzi help/discussion/announcements:
- *  https://groups.google.com/forum/#!forum/mozzi-users
- *
- *  Tim Barrass 2013.
- *  This example code is in the public domain.
- *
- *  sgreen - modified to use standard Arduino midi library, added saw wave, lowpass filter
- *  Audio output from pin 9 (pwm)
- *  Midi plug pin 2 (centre) to Arduino gnd, pin 5 to RX (0)
- *  http://www.philrees.co.uk/midiplug.htm
- *  Now with drums! (still has all this code in there, commented out : )
-
-S Green: 
-mod controller/ribbon is low pass filter cut-off
-big button switches between tri/rectangle/noise/saw 
-(noise is at constant frequency)
-
-NB think mostly fixed, but may still be possible to crash filter with loud sounds, hit reset!
- 
- */
-
-
-#include <MIDI.h>
-#include <MozziGuts.h>
-#include <Oscil.h> // oscillator template
-#include <Line.h> // for envelope
-#include <Sample.h>
-#include <mozzi_utils.h>
-#include <mozzi_analog.h>
-
-#include <tables/sin2048_int8.h> // sine table for oscillator
-//#include <tables/saw2048_int8.h>
-//#include <tables/triangle2048_int8.h>
-
-#include <mozzi_midi.h>
-#include <ADSRslow.h>
-#include <fixedMath.h>
-#include <LowPassFilter.h>
-#include "Wave.h"
-#include <WaveShaper.h>
-#include <tables/waveshape_compress_512_to_488_int16.h>
-
-#define MAX_NOTES 4
-//Dave G: now seems to do 4 note polyphony without clicking (higher notes are a bit grainy)
-int threshold=255/MAX_NOTES;
-
-#define DRUM_SAMPLES 0
-
-/*
-#if DRUM_SAMPLES
-#include "kick909.h"
-#include "snare909.h"
-#include "hihatc909.h"
-#include "hihato909.h"
-#endif
-*/
-
-// use #define for CONTROL_RATE, not a constant
-#define CONTROL_RATE 128 // powers of 2 please
-
-#define ENABLE_MIDI 1
-#define DEBUG 0
-#define BPM 120
-#define STEPS_PER_BEAT 4
-
-unsigned long stepCounter = 0;
-unsigned long ticksPerStep = (60*CONTROL_RATE) / (BPM*STEPS_PER_BEAT);
-
-// audio sinewave oscillator
-//Oscil <SIN2048_NUM_CELLS, AUDIO_RATE> osc(SIN2048_DATA);
-//Oscil <SAW2048_NUM_CELLS, AUDIO_RATE> osc(SAW2048_DATA);
-//Oscil <TRIANGLE2048_NUM_CELLS, AUDIO_RATE> osc(TRIANGLE2048_DATA);
-//Wave myosc;
-//Wave lfo;
-Oscil <SIN2048_NUM_CELLS, AUDIO_RATE> lfo(SIN2048_DATA);
-WaveShaper <int> aCompress(WAVESHAPE_COMPRESS_512_TO_488_DATA); // to compress instead of dividing by 2 after adding signals
-
-struct Channel {
-  Wave osc;
-  //Oscil <TRIANGLE2048_NUM_CELLS, AUDIO_RATE> osc;
-  ADSR <CONTROL_RATE> env;  
-  byte note;
-  byte gain;
-};
-Channel chan[MAX_NOTES];
-byte currentChan = 0;
-
-// envelope generator
-//ADSR <CONTROL_RATE> envelope;
-LowPassFilter lpf;
-int crushCtrl = 0;
-int gain = 32;
-float octave = 1.0f;
-
-boolean enableDrums = false;
-
-int step = 0;
-int waveType = 1;
-
-int button0_old = 0;
-int button1_old = 0;
-
-#if DRUM_SAMPLES
-// drums
-Sample <kick909_NUM_CELLS, AUDIO_RATE> kickSamp(kick909_DATA);
-Sample <snare909_NUM_CELLS, AUDIO_RATE> snareSamp(snare909_DATA);
-Sample <hihatc909_NUM_CELLS, AUDIO_RATE> hihatcSamp(hihatc909_DATA);
-Sample <hihato_NUM_CELLS, AUDIO_RATE> hihatoSamp(hihato_DATA);
-#endif
-
-byte pattern[4][16] = {
-  //0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
-    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  // 0 hhc
-    0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0,  // 1 hho
-    0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,  // 2 s
-    1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1   // 3 k
-};
-
-// pin defines
-#define LED 13 // to see if MIDI is being recieved
-#define BUTTON0_PIN 2
-#define BUTTON1_PIN 3
-
-// forward declarations
-void HandleNoteOn(byte channel, byte note, byte velocity);
-void HandleNoteOff(byte channel, byte note, byte velocity);
-void HandleControlChange (byte channel, byte number, byte value);
-void HandlePitchBend (byte channel, int bend);
-
-void setup() {
-  // init IO pins
-  pinMode(LED, OUTPUT);
-
-#if 0  
-  pinMode(BUTTON0_PIN, INPUT);
-  digitalWrite(BUTTON0_PIN, HIGH);  // turn on pull-up resistor
-
-  pinMode(BUTTON1_PIN, INPUT);
-  digitalWrite(BUTTON1_PIN, HIGH);  // turn on pull-up resistor
-#endif
-
-#if DEBUG
-  Serial.begin(57600);  // for debugging
-#endif
-
-#if ENABLE_MIDI
-  // Initiate MIDI communications, listen to all channels
-  MIDI.begin(MIDI_CHANNEL_OMNI);
-
-  // Connect the HandleNoteOn function to the library, so it is called upon reception of a NoteOn.
-  MIDI.setHandleNoteOn(HandleNoteOn);  // Put only the name of the function
-  MIDI.setHandleNoteOff(HandleNoteOff);  // Put only the name of the function
-  MIDI.setHandleControlChange(HandleControlChange);
-  MIDI.setHandlePitchBend(HandlePitchBend);
-  MIDI.setHandleContinue(HandleContinue); 
-  MIDI.setHandleStop(HandleStop);   
-#endif
-
-#if 0
-  //osc.setFreq(440u); // default frequency
-  //myosc.setFreq(440.0f);
-  myosc.setFreq(440.0f*4.0f);
-  myosc.setPulseWidth(32);
-
-  envelope.setADLevels(255, 200);
-  envelope.setTimes(50, 200, 65535, 200);
-#endif
-  
-  for(int i=0; i<MAX_NOTES; i++)
-  {
-    chan[i].osc.setType(WAVE_TRI);
-    //chan[i].osc.setTable(TRIANGLE2048_DATA);
-    chan[i].osc.setPulseWidth(16);
-    chan[i].env.setADLevels(128, 100);
-    chan[i].env.setTimes(100, 200, 65535, 200);
-  }
- 
-  //lfo.setType(WAVE_TRI);
-  lfo.setFreq(10.0f);
-
-  lpf.setResonance(128);
-  lpf.setCutoffFreq(255);
-
-#if DRUM_SAMPLES
-  kickSamp.setFreq((float) kick909_SAMPLERATE / (float) kick909_NUM_CELLS);
-  snareSamp.setFreq((float) snare909_SAMPLERATE / (float) snare909_NUM_CELLS);
-  hihatcSamp.setFreq((float) hihatc909_SAMPLERATE / (float) hihatc909_NUM_CELLS);
-  hihatoSamp.setFreq((float) hihato_SAMPLERATE / (float) hihato_NUM_CELLS);
-  //snareSamp.start();
-#endif
-
-  //setupFastAnalogRead(); // optional  
-  adcEnableInterrupt();  // for analog reads
-
-  startMozzi(CONTROL_RATE); 
-}
-
-void HandleNoteOn(byte channel, byte note, byte velocity) {
-  //osc.setFreq(mtof(note)); // simple but less accurate frequency
-  //osc.setFreq_Q16n16(Q16n16_mtof(Q8n0_to_Q16n16(note))); // accurate frequency
-  //myosc.setFreq(mtof(note)); // accurate frequency
-  //envelope.noteOn();
- 
-   // start note on next channel - NB no "note priority" at this stage
-  chan[currentChan].note = note;
-  chan[currentChan].osc.setFreq( mtof(note) ); // accurate frequency
-  chan[currentChan].env.noteOn();
-  currentChan = (currentChan + 1) % MAX_NOTES;  // just wraps around for now
-  
-  digitalWrite(LED,HIGH);
-}
-
-void HandleNoteOff(byte channel, byte note, byte velocity) { 
-  //envelope.noteOff();
-  
-  // find which channel was playing this note
-  for(int i=0; i<MAX_NOTES; i++) {
-    if (chan[i].note == note) {
-      // kill it
-      chan[i].env.noteOff();
-    } 
-  }
-  
-  digitalWrite(LED,LOW);
-}
-
-void HandleControlChange (byte channel, byte number, byte value)
-{
-  // http://www.indiana.edu/~emusic/cntrlnumb.html
-  switch(number) {
-  case 1:      // modulation wheel
-    //gain = value*2;
-    lpf.setCutoffFreq( int(value*1.5f) );  // control messages are in [0, 127] range
-    break;
-/*    
-  case 105:
-    lpf.setCutoffFreq(value*2);  // control messages are in [0, 127] range
-    break;
-*/
-  case 106:
-    //lpf.setResonance(value*2);
-    crushCtrl = value;
-    break;
-  }
-}
-
-// pitchbend = control strip + button on Keytar
-void HandlePitchBend (byte channel, int bend)
-{
-  //bend value from +/-8192
-  //lfo.setFreq((unsigned int) (bend+8192)>>7);
-  for(int i=0; i<MAX_NOTES; i++) {
-    chan[i].osc.setPulseWidth((bend+8192) >> 8); 
-  }
-  
-}
-
-void HandleStop () { //this is the Back button on the Xbox keyboard
-//  octave *= 2.0f;
-//  if (octave > 16.0f) octave = 1.0f;
-//Dave G: no longer used : )
-}
-
-void HandleContinue () { // the big round button on all keytars
-
-  // change wave
-  waveType = (waveType + 1) & 3;
-
-  for(int i=0; i<MAX_NOTES; i++)
-  {
-#if 0
-    switch(waveType) {
-    case 0:
-      chan[i].osc.setTable(TRIANGLE2048_DATA);
-      break;
-    case 1:
-      chan[i].osc.setTable(SAW2048_DATA);
-      break;
-    case 2:
-      chan[i].osc.setTable(SIN2048_DATA);
-      break;
-    }
-#else
-    for(int i=0; i<MAX_NOTES; i++)
-    {
-      chan[i].osc.setType((WaveType) waveType);
-    }
-#endif
-  }
-}
-
-void updateControl(){
-#if ENABLE_MIDI
-  MIDI.read();
-#endif
-
-  //envelope.update();
-  
-  // update playing envelopes
-  for(int i=0; i<MAX_NOTES; i++) {
-    chan[i].env.update(); 
-    chan[i].gain=chan[i].env.next();
-    if (chan[i].gain>threshold) {chan[i].gain=threshold;}
-    // threshold=255/MAX_NOTES, genuinely not sure if this is best approach but stops crashes :)
-  }
-
-#if 0
-  // push buttons
-  int button0 = !digitalRead(BUTTON0_PIN);  // active low
-  int button1 = !digitalRead(BUTTON1_PIN);
-  
-  /*
-  if (button0) {
-    // trigger
-    //envelope.noteOn();
-    //lpf.reset();
-    digitalWrite(LED, HIGH);    
-  } else {
-    digitalWrite(LED, LOW);    
-  }
-  */
-  
-  if (button0 && !button0_old) {
-    lfo.setType((WaveType) ((((int) lfo.getType()) + 1) % 3));    
-  }
-  button0_old = button0;
-
-  if (button1 & !button1_old) {
-    waveType = (waveType + 1) & 3;
-    //myosc.setType((WaveType) waveType);
-    for(int i=0; i<MAX_NOTES; i++)
-    {
-      chan[i].osc.setType((WaveType) waveType);
-    }
-  }
-  button1_old = button1;
-#endif
-
-#if DRUM_SAMPLES
-  if (enableDrums) { 
-    // drums  
-    stepCounter++;
-    if (stepCounter > ticksPerStep) {
-      step = (step+1) & 0xf;
-      stepCounter = 0;
-      if (pattern[0][step]) hihatcSamp.start();
-      if (pattern[1][step]) hihatoSamp.start();
-      if (pattern[2][step]) snareSamp.start();
-      if (pattern[3][step]) kickSamp.start();
-    }
-  }
-#endif
-
-#if 0  
-  // knobs
-  int knob0 = adcGetResult(0);  // [0, 1023]
-  int knob1 = adcGetResult(1);
-  //lpf.setCutoffFreq(knob0>>2);
-  //lpf.setResonance(knob1>>2);
-
-  //crushCtrl = knob1>>7;  
-  lfo.setFreq((float) knob0);
-  //myosc.setFreq((float) knob1);
-  //myosc.setFreq((unsigned int) knob0*20);
-  //myosc.setPulseWidth((unsigned char) (knob1>>2));
-
-  // start the next read cycle in the background
-  adcReadAllChannels();
-#endif
-
-#if DEBUG  
-  Serial.println(knob0);
-#endif
-}
-
-// strip the low bits off!
-int bitCrush(int x, int a)
-{
-  return (x>>a)<<a;
-}
-
-int updateAudio()
-{
-  //int x = (int) (envelope.next() * osc.next())>>8;
-  //int x = (int) (envelope.next() * myosc.next())>>8;
-  //int x = (int) (envelope.next() * (lfo.next() * myosc.next())>>8)>>8;
-  //int x = (int) lfo.next();
-  //int x = (int) (lfo.next() * myosc.next())>>8;  
-  //int x = (int) (envelope.next() * lpf.next(myosc.next()))>>8;
-  //int x = (envelope.next() * lpf.next(osc.next()))>>8; 
-  //x = bitCrush(x, crushCtrl>>4);
-  //x = bitCrush(x, crushCtrl);
-  //x = (x * crushCtrl)>>4;  // simple gain
-  //x = x>>2;
-  //x = lpf.next(x);
-
-  // sum up channels
-  int x = 0;
-  for(int i=0; i<MAX_NOTES; i++) {
-    x += (int) (chan[i].gain * chan[i].osc.next())>>8;
-  }
-//Dave G: helps crash less if goes through some sort of waveshaper here?
-  x = aCompress.next(256u + x);
-
-  //x = (x*gain)>>8;
-  //x = (x * lfo.next())>>8;  
-  x = lpf.next(x);
-
-#if DRUM_SAMPLES
-  if (enableDrums) { 
-    // drums please!
-    int drums = kickSamp.next() + snareSamp.next() + hihatcSamp.next() + hihatoSamp.next();
-    //drums = (drums>>4)<<4;  
-    x += drums*2;
-  }
-#endif
-  
-  return x;
-}
-
-
-void loop() {
-  audioHook(); // required here
-} 
-
-
-