add week 9

content/docs/2023/code-design/9/examples/mozzi_reich/mozzi_reich.ino

@@ -0,0 +1,73 @@
+#include <MozziGuts.h>
+#include <mozzi_midi.h>
+#include <Oscil.h>
+#include <EventDelay.h>
+#include <ADSR.h>
+#include <tables/sin8192_int8.h>
+
+Oscil <8192, AUDIO_RATE> aOscil(SIN8192_DATA);//元となる音色
+Oscil <8192, AUDIO_RATE> aOscil2(SIN8192_DATA);//元となる音色
+ADSR <AUDIO_RATE, AUDIO_RATE> envelope_A;//エンベロープをかけるためのクラス
+ADSR <AUDIO_RATE, AUDIO_RATE> envelope_B;//エンベロープをかけるためのクラス
+unsigned int Dur, Atk, Dec, Sus, Rel;//ADSRの長さを入れておく変数
+
+//piano phaseのパターン
+unsigned int pattern[] = {64, 66, 71, 73, 74, 66, 64, 73, 71, 66, 74, 73};
+
+//二つのタイマーを用意
+int phase_A = 0;
+int phase_B = 0;
+EventDelay timer_B;
+EventDelay timer_A;
+
+void setup() {
+  startMozzi(1024);
+  Atk = 10;
+  Dec = 10;
+  Sus = 50;
+  Rel = 100;
+  envelope_A.setTimes(Atk, Dec, Sus, Rel);
+  envelope_A.setADLevels(255, 128);
+  envelope_B.setTimes(Atk, Dec, Sus, Rel);
+  envelope_B.setADLevels(255, 128);
+
+  timer_A.set(150);
+  timer_B.set(151);
+  timer_B.start();
+  timer_A.start();
+}
+
+void updateControl()
+{  
+  if (timer_A.ready())
+  {
+    int note = pattern[phase_A];
+    phase_A = (phase_A + 1) % 12;
+    aOscil.setFreq(mtof(note));
+    envelope_A.noteOn();
+    timer_A.start();
+  }
+
+  if (timer_B.ready())
+  {
+    int note = pattern[phase_B];
+    phase_B = (phase_B + 1) % 12;
+    aOscil2.setFreq(mtof(note));
+    envelope_B.noteOn();
+    timer_B.start();
+  }
+}
+
+int updateAudio()
+{
+  envelope_A.update();
+  envelope_B.update();
+  int A = (envelope_A.next() * aOscil.next()) >> 8;
+  int B = (envelope_B.next() * aOscil2.next()) >> 8;
+
+  return (A + B) / 2;
+}
+
+void loop() {
+  audioHook();
+}