Enable drones

patches.h

@@ -5,6 +5,23 @@
 
 // Waveform, offset, multiplier, delay, attack, holdAmp, hold, decay, sustainAmp, release
 FMPatch Bank[] = {
+  {
+    "Pumpkin",
+    ALG_OPL2_1(0.3),
+    {
+      // Waveform       offs   mult dely  attk  hldA   hld decy  susA rels
+      {WAVEFORM_SAWTOOTH,  0,  1.00,   0, 10.5,  0.8, 10.5,  10, 0.50,   5},
+      {WAVEFORM_SINE,      0,  2.00,   0, 10.5,  0.4, 10.5,  10, 0.01,   5},
+    },
+  },
+  {
+    "Sawtooth",
+    ALG_SIMPLE,
+    {
+      // Waveform     offs   mult dely  attk  hldA   hld decy  susA rels
+      {WAVEFORM_SAWTOOTH,  0,  1.00,   0, 10.5,  0.8, 10.5,  10, 0.50,   5},
+    },
+  },
   {
     "Square",
     ALG_SIMPLE,

synth.cpp

@@ -5,6 +5,7 @@ void FMVoiceLoadPatch(FMVoice *v, FMPatch *p) {
   for (int i=0; i<NUM_OPERATORS; i++) {
     FMOperator op = p->operators[i];
 
+    v->oscillators[i].frequencyModulation(1);
     v->oscillators[i].begin(op.waveform);
     v->envelopes[i].delay(op.delayTime);
     v->envelopes[i].attack(op.attackTime);
@@ -35,10 +36,12 @@ void FMVoiceNoteOn(FMVoice *v, float freq) {
   for (int i=0; i<4; i++) {
     v->envelopes[i].noteOn();
   }
+  v->playing = true;
 }
 
 void FMVoiceNoteOff(FMVoice *v) {
   for (int i=0; i<4; i++) {
     v->envelopes[i].noteOff();
   }
+  v->playing = false;
 }

synth.h

@@ -86,6 +86,7 @@ typedef struct FMVoice {
   AudioEffectEnvelope envelopes[NUM_OPERATORS];
   AudioMixer4 outputMixer;
   FMPatch *patch;
+  bool playing;
 } FMVoice;
 
 /** FMOperatorWiring outputs AudioConnection initializers to wire one FM Operator

uilleann.ino

@@ -112,6 +112,18 @@ void setup() {
   AudioProcessorUsageMaxReset();
   AudioMemoryUsageMaxReset();
 
+  // Turn on drones
+  for (int i=0; i<3; i++) {
+    FMVoiceLoadPatch(&Drones[i], &Bank[0]);
+    FMVoiceNoteOn(&Drones[i], JustPitches[NOTE_D4 - 12*i] + i);
+  }
+
+  // Turn on all mixer channels
+  for (int i=0; i<4; i++) {
+    mixL.gain(i, 0.5);
+    mixR.gain(i, 0.6);
+  }
+  
 #ifdef DEBUG
   debug.amplitude(0.1);
   mixL.gain(3, 0.1);
@@ -125,11 +137,11 @@ void setup() {
 #define BUTTON_VOLUME 25
 
 #define INIT_PITCH_ADJUST 0
-#define INIT_GAIN 0.1
+#define INIT_GAIN 0.7
 #define INIT_PATCH 0
 
 int16_t pitchAdjust;
-float gain;
+float chanterGain;
 int patch;
 
 void updateTunables(uint8_t buttons, int note) {
@@ -156,22 +168,22 @@ void updateTunables(uint8_t buttons, int note) {
     // Volume adjust if playing G
     switch (buttons) {
     case 3:
-      gain = INIT_GAIN;
+      chanterGain = INIT_GAIN;
       break;
     case 2:
-      gain = min(gain+0.005, 1.0);
+      chanterGain = min(chanterGain+0.005, 1.0);
       break;
     case 1:
-      gain = max(gain-0.005, 0.0);
+      chanterGain = max(chanterGain-0.005, 0.0);
       break;
     }
   }
 
   for (int i=0; i<3; i++) {
-    mixL.gain(i, gain);
-    mixR.gain(i, gain);
+    mixL.gain(i, chanterGain);
+    mixR.gain(i, chanterGain);
   }
-  trellis.setPixelColor(BUTTON_VOLUME, trellis.ColorHSV(uint16_t(gain * 65535), 255, 80));
+  trellis.setPixelColor(BUTTON_VOLUME, trellis.ColorHSV(uint16_t(chanterGain * 65535), 255, 80));
 
   if (!note || (note == NOTE_CS5)) {
     if (buttons == 3) {
@@ -270,7 +282,6 @@ void loop() {
 
   if (silent) {
     FMVoiceNoteOff(&Chanter);
-    playing = false;
   } else {
     // Calculate pitch, and glissando pitch
     uint16_t pitch = JustPitches[note];
@@ -288,11 +299,10 @@ void loop() {
       pitch += diff * glissandoOpenness;
     }
 
-    if (playing) {
+    if (Chanter.playing) {
       FMVoiceSetPitch(&Chanter, pitch);
     } else {
       FMVoiceNoteOn(&Chanter, pitch);
     }
-    playing = true;
   }
 }