コミット: 48db01878cadbd04fb8b4272dbfdd9f3c6401d02 - PWMDAC_Synth (git)

ATMEGA328を搭載した Arduino Duemilanove 互換機で音をPWM D/A変換出力するシンセサイザーライブラリです。

コミットメタ情報

• リビジョン: 48db01878cadbd04fb8b4272dbfdd9f3c6401d02 (tree)
• 日時: 2017-05-11 00:00:36
• 作者: Akiyoshi Kamide <kamide@yk.r...>
• コミッター: Akiyoshi Kamide

ログメッセージ

スケッチの例をCAmiDionのスケッチから抜粋して大幅拡充

変更サマリ

• modified: examples/MIDI/MIDI.ino

差分

--- a/examples/MIDI/MIDI.ino
+++ b/examples/MIDI/MIDI.ino
@@ -1,6 +1,5 @@
 //
-// A simple MIDI synthesizer
-//	using MIDI library + PWM DAC Synth library
+// Example of MIDI synthesizer using MIDI library + PWM DAC Synth library
 //
 #include <MIDI.h>
 MIDI_CREATE_DEFAULT_INSTANCE();
@@ -9,12 +8,250 @@ MIDI_CREATE_DEFAULT_INSTANCE();
 #define PWMDAC_OUTPUT_PIN   3
 #include <PWMDAC_Synth.h>
 
+#define DRUM_MIDI_CHANNEL 10
+
 PWMDAC_CREATE_WAVETABLE(sineWavetable, PWMDAC_SINE_WAVE);
+PWMDAC_CREATE_WAVETABLE(sawtoothWavetable, PWMDAC_SAWTOOTH_WAVE);
+PWMDAC_CREATE_WAVETABLE(squareWavetable, PWMDAC_SQUARE_WAVE);
+PWMDAC_CREATE_WAVETABLE(triangleWavetable, PWMDAC_TRIANGLE_WAVE);
+
+PROGMEM const byte guitarWavetable[] = {
+23, 24, 24, 25, 25, 25, 26, 26,
+26, 27, 27, 28, 29, 30, 32, 33,
+34, 35, 36, 36, 36, 36, 36, 37,
+37, 37, 38, 39, 39, 40, 40, 40,
+40, 40, 39, 39, 40, 40, 40, 41,
+41, 41, 41, 40, 41, 41, 41, 41,
+42, 42, 42, 42, 41, 41, 41, 41,
+42, 41, 41, 40, 40, 40, 39, 39,
+38, 37, 37, 37, 37, 36, 36, 36,
+35, 34, 33, 32, 31, 30, 30, 30,
+30, 30, 30, 30, 30, 29, 28, 27,
+27, 27, 26, 26, 26, 26, 25, 24,
+24, 23, 23, 23, 23, 22, 22, 22,
+22, 21, 21, 21, 21, 21, 21, 21,
+20, 21, 20, 20, 19, 19, 18, 18,
+18, 18, 18, 18, 18, 18, 17, 16,
+16, 15, 14, 14, 15, 15, 16, 16,
+16, 16, 17, 17, 17, 17, 17, 17,
+18, 18, 18, 18, 17, 17, 17, 17,
+17, 17, 18, 18, 17, 17, 16, 15,
+15, 14, 14, 15, 15, 15, 16, 16,
+16, 16, 16, 16, 16, 16, 16, 16,
+16, 16, 16, 15, 15, 15, 15, 15,
+14, 14, 13, 12, 11, 10, 9,  9,
+9,  9,  8,  8,  8,  7,  6,  6,
+5,  4,  3,  2,  2,  3,  3,  3,
+3,  4,  4,  4,  4,  4,  3,  3,
+2,  2,  2,  2,  2,  1,  2,  2,
+3,  4,  4,  4,  5,  5,  5,  6,
+6,  7,  9,  10, 11, 11, 12, 12,
+13, 13, 14, 14, 14, 15, 15, 16,
+17, 17, 18, 19, 20, 21, 21, 22,
+};
+
+PROGMEM const byte randomWavetable[] = {
+39, 22, 21, 9,  23, 13, 28, 31,
+15, 30, 40, 8,  29, 26, 27, 8,
+34, 30, 4,  22, 39, 25, 35, 33,
+38, 17, 7,  38, 18, 24, 12, 9,
+8,  36, 27, 17, 33, 0,  13, 35,
+20, 15, 34, 0,  34, 6,  29, 38,
+30, 20, 16, 39, 26, 18, 28, 28,
+24, 38, 27, 31, 25, 14, 9,  25,
+31, 13, 3,  17, 29, 23, 18, 6,
+12, 20, 30, 27, 1,  40, 9,  19,
+26, 21, 4,  25, 1,  16, 11, 18,
+15, 23, 30, 7,  37, 23, 11, 19,
+30, 36, 7,  9,  17, 27, 8,  41,
+4,  9,  26, 0,  24, 18, 6,  15,
+30, 23, 7,  9,  9,  41, 1,  0,
+33, 9,  34, 18, 19, 22, 25, 16,
+22, 31, 41, 21, 27, 35, 38, 32,
+17, 16, 10, 39, 36, 9,  37, 13,
+16, 12, 10, 14, 21, 12, 19, 12,
+11, 19, 0,  32, 13, 27, 32, 10,
+18, 5,  22, 9,  6,  33, 29, 2,
+4,  2,  17, 0,  38, 14, 18, 16,
+25, 10, 8,  3,  3,  39, 3,  5,
+7,  22, 6,  11, 16, 23, 23, 5,
+3,  23, 22, 25, 17, 7,  19, 29,
+41, 0,  10, 15, 14, 41, 6,  40,
+8,  0,  19, 16, 30, 18, 2,  24,
+17, 37, 11, 6,  1,  33, 10, 31,
+33, 19, 20, 23, 24, 41, 4,  40,
+29, 12, 4,  11, 38, 17, 41, 8,
+15, 37, 19, 34, 36, 8,  19, 10,
+32, 14, 19, 1,  1,  35, 35, 3,
+};
+
+PROGMEM const Instrument DRUM_INSTRUMENT = {randomWavetable, {5, 0, 5, 0}};
 
 // {wavetableArray, {release, sustain, decay, attack}}
-PROGMEM const Instrument instrument = {sineWavetable, {9, 128, 8, 3}};
+PROGMEM const Instrument INSTRUMENTS[] = {
+// General MIDI instruments
+  // Piano
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {guitarWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 10, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {8, 0, 10, 4}},
+
+  // Chromatic Percussion
+  {sawtoothWavetable, {9, 0, 10, 4}},
+  {sineWavetable, {9, 0, 11, 4}},
+  {sineWavetable, {9, 0, 10, 3}},
+  {sineWavetable, {9, 0, 11, 4}},
+  {sineWavetable, {8, 0, 8, 4}},
+  {sineWavetable, {7, 0, 7, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 9, 4}},
+
+  // Organ
+  {guitarWavetable, {9, 255, 11, 4}},
+  {sawtoothWavetable, {9, 255, 11, 4}},
+  {guitarWavetable, {9, 255, 11, 4}},
+  {sawtoothWavetable, {9, 255, 11, 4}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 8}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+
+  // Guitar
+  {guitarWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {guitarWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {guitarWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 10, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {randomWavetable, {9, 8, 10, 4}},
+
+  // Bass
+  {guitarWavetable, {9, 0, 11, 4}},
+  {guitarWavetable, {9, 0, 11, 4}},
+  {guitarWavetable, {9, 192, 9, 3}},
+  {guitarWavetable, {9, 192, 9, 6}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 128, 10, 4}},
+  {sawtoothWavetable, {9, 192, 11, 4}},
+
+  // Strings
+  {sawtoothWavetable, {9, 255, 10, 6}},
+  {sawtoothWavetable, {9, 255, 10, 6}},
+  {sawtoothWavetable, {9, 255, 10, 6}},
+  {sawtoothWavetable, {9, 255, 10, 6}},
+  {guitarWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {8, 0, 8, 4}},
+  {sineWavetable, {9, 0, 11, 4}},
+  {randomWavetable, {9, 0, 10, 3}},
+
+  // Ensemble
+  {triangleWavetable, {9, 255, 11, 6}},
+  {triangleWavetable, {9, 255, 11, 9}},
+  {triangleWavetable, {9, 255, 11, 6}},
+  {triangleWavetable, {9, 255, 11, 7}},
+  {guitarWavetable, {9, 255, 11, 4}},
+  {sawtoothWavetable, {9, 128, 9, 4}},
+  {sineWavetable, {9, 255, 11, 4}},
+  {squareWavetable, {8, 0, 9, 3}},
+
+  // Brass
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {guitarWavetable, {9, 255, 11, 7}},
+  {sawtoothWavetable, {9, 128, 9, 5}},
+  {sawtoothWavetable, {9, 192, 9, 5}},
+  {guitarWavetable, {9, 192, 10, 5}},
+
+  // Reed
+  {guitarWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 4}},
+  {sawtoothWavetable, {9, 255, 11, 4}},
+  {triangleWavetable, {9, 255, 11, 5}},
+
+  // Pipe
+  {guitarWavetable, {9, 255, 11, 6}},
+  {guitarWavetable, {9, 255, 11, 7}},
+  {sineWavetable, {9, 255, 11, 6}},
+  {triangleWavetable, {9, 255, 11, 7}},
+  {randomWavetable, {9, 128, 10, 6}},
+  {triangleWavetable, {9, 255, 11, 7}},
+  {sineWavetable, {9, 255, 11, 7}},
+  {sineWavetable, {9, 255, 11, 7}},
+
+  // Synth Lead
+  {squareWavetable, {9, 255, 11, 3}},
+  {sawtoothWavetable, {9, 255, 11, 3}},
+  {triangleWavetable, {9, 255, 11, 5}},
+  {triangleWavetable, {9, 128, 8, 6}},
+  {sawtoothWavetable, {9, 192, 8, 5}},
+  {sawtoothWavetable, {9, 192, 8, 5}},
+  {guitarWavetable, {9, 192, 11, 5}},
+  {sawtoothWavetable, {9, 255, 11, 3}},
+
+  // Synth Pad
+  {guitarWavetable, {9, 255, 11, 5}},
+  {guitarWavetable, {9, 255, 11, 9}},
+  {guitarWavetable, {4, 192, 9, 4}},
+  {guitarWavetable, {9, 255, 11, 6}},
+  {guitarWavetable, {9, 192, 10, 8}},
+  {sawtoothWavetable, {9, 255, 11, 10}},
+  {guitarWavetable, {9, 255, 11, 8}},
+  {sawtoothWavetable, {9, 255, 11, 10}},
+
+  // Synth Effects
+  {guitarWavetable, {9, 128, 9, 4}},
+  {sawtoothWavetable, {9, 128, 10, 10}},
+  {triangleWavetable, {9, 192, 8, 4}},
+  {guitarWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {10, 0, 11, 3}},
+  {triangleWavetable, {9, 0, 11, 10}},
+  {guitarWavetable, {9, 255, 11, 4}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
 
-PWMDAC_CREATE_INSTANCE(&instrument);
+  // Ethnic
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {9, 0, 9, 4}},
+  {sawtoothWavetable, {9, 0, 11, 4}},
+  {sawtoothWavetable, {8, 0, 8, 4}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+  {sawtoothWavetable, {9, 255, 11, 6}},
+
+  // Percussive
+  {squareWavetable, {9, 64, 9, 4}},
+  {sawtoothWavetable, {8, 0, 8, 4}},
+  {guitarWavetable, {9, 0, 11, 5}},
+  {sineWavetable, {8, 0, 8, 4}},
+  {randomWavetable, {8, 0, 8, 4}},
+  {triangleWavetable, {8, 0, 8, 4}},
+  {randomWavetable, {8, 0, 8, 4}},
+  {randomWavetable, {8, 255, 7, 12}},
+
+  // Sound Effects
+  {randomWavetable, {8, 0, 8, 4}},
+  {randomWavetable, {8, 0, 8, 4}},
+  {randomWavetable, {10, 64, 12, 12}},
+  {sineWavetable, {9, 255, 11, 4}},
+  {randomWavetable, {9, 255, 11, 4}},
+  {randomWavetable, {9, 255, 11, 12}},
+  {randomWavetable, {10, 255, 10, 11}},
+  {randomWavetable, {9, 0, 10, 3}},
+};
+
+PWMDAC_CREATE_INSTANCE(INSTRUMENTS);
 
 void HandleNoteOn(byte channel, byte pitch, byte velocity) { 
   if( velocity == 0 ) {
@@ -24,22 +261,66 @@ void HandleNoteOn(byte channel, byte pitch, byte velocity) {
   PWMDACSynth::noteOn(channel,pitch,velocity);
 }
 
+void HandleProgramChange(byte channel, byte number) {
+  if( channel == DRUM_MIDI_CHANNEL ) return;
+  PWMDACSynth::getChannel(channel)->programChange(INSTRUMENTS + number);
+}
+
+void HandleSystemReset() {
+  PWMDACSynth::systemReset();
+  // In PWMDAC Synth lib, All MIDI channel will be reset to same waveform/envelope even ch#10.
+  // So ensure to set drum instrument to ch#10.
+  PWMDACSynth::getChannel(DRUM_MIDI_CHANNEL)->programChange(&DRUM_INSTRUMENT);
+}
+
+// System Exclusive to reset, without first byte(0xF0)/last byte(0xF7)
+PROGMEM const byte GM_SYSTEM_ON[] = {
+  0x7E, // Universal
+  0x7F, 0x09, 0x01
+};
+PROGMEM const byte GS_SYSTEM_ON[] = {
+  0x41, // Roland
+  0x00, 0x42, 0x12, 0x40, 0x00, 0x7F, 0x00, 0x41
+};
+PROGMEM const byte XG_SYSTEM_ON[] = {
+  0x43, // YAMAHA
+  0x10, 0x4C, 0x00, 0x00, 0x7E, 0x00
+}; 
+void HandleSystemExclusive(byte *array, unsigned size) {
+  array++; size -= 2;
+  if( memcmp_P(array, GM_SYSTEM_ON, size) == 0 ) {
+    HandleSystemReset(); return;
+  }
+  array[1] &= 0xF0; // Clear lower 4-bits of device ID (0x1n -> 0x10)
+  if( memcmp_P(array, XG_SYSTEM_ON, size) == 0 ) {
+    HandleSystemReset(); return;
+  }
+  array[1] = 0; // Clear device ID (0xnn -> 0x00)
+  if( memcmp_P(array, GS_SYSTEM_ON, size) == 0 ) {
+    HandleSystemReset(); return;
+  }
+}
+
 void setup() {
   PWMDACSynth::setup();
-  MIDI.begin(MIDI_CHANNEL_OMNI); // receives all MIDI channels
-  MIDI.turnThruOff(); // Disable MIDI IN -> MIDI OUT mirroring
   MIDI.setHandleNoteOff(PWMDACSynth::noteOff);
   MIDI.setHandleNoteOn(HandleNoteOn);
   MIDI.setHandlePitchBend(PWMDACSynth::pitchBend);
   MIDI.setHandleControlChange(PWMDACSynth::controlChange);
+  MIDI.setHandleSystemReset(HandleSystemReset);
+  MIDI.setHandleProgramChange(HandleProgramChange);
+  MIDI.setHandleSystemExclusive(HandleSystemExclusive);
+  MIDI.begin(MIDI_CHANNEL_OMNI); // receives all MIDI channels
+  MIDI.turnThruOff(); // Disable MIDI IN -> MIDI OUT mirroring
   pinMode(MIDI_ENABLE_PIN,OUTPUT);
   digitalWrite(MIDI_ENABLE_PIN,HIGH); // enable MIDI port
+  PWMDACSynth::getChannel(DRUM_MIDI_CHANNEL)->programChange(&DRUM_INSTRUMENT);
 }
 
 void loop() {
   static byte tick=0;
   MIDI.read();
-  if( ++tick >= 16 ) {
+  if( ++tick >= 8 ) {
     tick = 0;
     PWMDACSynth::update();
   }