added examples

software/lib/MMM/examples/Music/_7_spaghetti_tones/_7_spaghetti_tones.ino

@@ -0,0 +1,60 @@
+// The Music and Midi objects are automatically instantiated when the header file is included.
+// Make calls to the Music and Midi objects with "Music.function(args)" and "Midi.function(args)"
+// You still need to call Music.init() and Midi.init() in the setup() function below.
+#include <Music.h>
+
+// variables for this sketch
+float gain = 1.0;
+float c = 220; // center frequency
+float f1 = 1;
+float f2 = 1;
+float f3 = 1;
+float m1 = 1.0011;
+float m2 = 1.0012;
+float m3 = 1.0013;
+
+
+void setup() {
+
+  // We initialise the sound engine by calling Music.init() which outputs a tone
+  Music.init();
+  
+  // Choosing the sine wave oscillator (optional since this is already the default).
+  Music.setWaveform(0);
+  
+  // Setting the initial frequency for all three oscillators.
+  Music.setFrequency(c);
+  
+  // Detuning the three oscillators slightly to create movement in the sound.
+  Music.setDetune(0.002);  
+  
+}
+
+void loop() {
+  
+  // This short routine creates a
+
+    Music.setFrequency1(c*f1);
+    Music.setFrequency2(c*f2);
+    Music.setFrequency3(c*f3);
+    
+    f1 *= m1;
+    f2 *= m2;
+    f3 *= m3;
+    
+    if(f1 > 4.0) m1 = 0.9745;
+    if(f2 > 4.0) m2 = 0.9852;
+    if(f3 > 4.0) m3 = 0.9975;
+    
+    if(f1 < 0.25) m1 = 1.0754;
+    if(f2 < 0.25) m2 = 1.0573;
+    if(f3 < 0.25) m3 = 1.0386;
+      
+    if(millis() > 10000) {
+      Music.setGain(gain);
+      gain *= 0.999;
+    }
+    
+
+}
+