Small additions and fixes.

MicroMDAPiano.ino

@@ -64,6 +64,8 @@ uint8_t voice = 0;
 float vol = VOLUME;
 float vol_right = 1.0;
 float vol_left = 1.0;
+elapsedMicros fill_audio_buffer;
+const uint16_t audio_block_time_us = 1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLES);
 
 #ifdef MASTER_KEY_MIDI
 bool master_key_enabled = false;
@@ -173,6 +175,23 @@ void setup()
   sched_note_off.begin(note_off, 6333333);
 #endif
 
+/*
+0       decay
+1       release
+2       hardness
+3       treble
+4       pan_trem
+5       lfo_rate
+6       velocity_sense
+7       stereo
+8       max_poly
+9       tune
+10      detune
+11      overdrive
+*/
+//ep->setParameter(11,1.0); // overdrive
+//ep->setParameter(10,1.0); // overdrive
+
   Serial.println(F("<setup end>"));
 
 #if defined (DEBUG) && defined (SHOW_CPU_LOAD_MSEC)
@@ -188,8 +207,10 @@ void loop()
   const uint16_t audio_block_time_ms = 1000000 / (SAMPLE_RATE / AUDIO_BLOCK_SAMPLES);
 
   // Main sound calculation
-  if (queue_r.available() && queue_l.available())
+  if (queue_r.available() && queue_l.available() && fill_audio_buffer > audio_block_time_us - 10)
   {
+    fill_audio_buffer = 0;
+
     audio_buffer_r = queue_r.getBuffer();
     audio_buffer_l = queue_l.getBuffer();
 
@@ -201,8 +222,6 @@ void loop()
     }
 #endif
 
-    handle_input();
-
     audio_buffer_r = queue_r.getBuffer();
     if (audio_buffer_r == NULL)
     {
@@ -242,6 +261,8 @@ void loop()
     queue_r.playBuffer();
     queue_l.playBuffer();
   }
+
+  handle_input();
 }
 
 void handle_input(void)

mdaEPiano.cpp

@@ -90,25 +90,25 @@ mdaEPiano::mdaEPiano() // mdaEPiano::mdaEPiano(audioMasterCallback audioMaster)
   kgrp[31].pos = 406046;  kgrp[31].end = 414486;  kgrp[31].loop = 2306; //ghost
   kgrp[32].pos = 414487;  kgrp[32].end = 422408;  kgrp[32].loop = 2169;
 
-/*
-  //extra xfade looping...
-  for (int32_t k = 0; k < 28; k++)
-  {
-    int32_t p0 = kgrp[k].end;
-    int32_t p1 = kgrp[k].end - kgrp[k].loop;
+  /*
+    //extra xfade looping...
+    for (int32_t k = 0; k < 28; k++)
+    {
+      int32_t p0 = kgrp[k].end;
+      int32_t p1 = kgrp[k].end - kgrp[k].loop;
 
-    float xf = 1.0f;
-    float dxf = -0.02f;
+      float xf = 1.0f;
+      float dxf = -0.02f;
 
-    while (xf > 0.0f)
-    {
-      waves[p0] = (short)((1.0f - xf) * (float)waves[p0] + xf * (float)waves[p1]);
+      while (xf > 0.0f)
+      {
+        waves[p0] = (short)((1.0f - xf) * (float)waves[p0] + xf * (float)waves[p1]);
 
-      p0--;
-      p1--;
-      xf += dxf;
+        p0--;
+        p1--;
+        xf += dxf;
+      }
     }
-  }
   */
 
   //initialise...
@@ -235,7 +235,7 @@ void mdaEPiano::process(int16_t *outputs_r, int16_t *outputs_l)
       }
       l += V->outl * x;
       r += V->outr * x;
-
+      
       V++;
     }
 
@@ -249,8 +249,8 @@ void mdaEPiano::process(int16_t *outputs_r, int16_t *outputs_l)
     l += l * lmod * lfo1;
     r += r * rmod * lfo1;  //worth making all these local variables?
 
-    outputs_l[frame] = static_cast<int16_t>(l * 0x7fff) >> REDUCE_LOUDNESS;
-    outputs_r[frame] = static_cast<int16_t>(r * 0x7fff) >> REDUCE_LOUDNESS;
+    outputs_l[frame] += static_cast<int16_t>((l * 0.5) * 0x7fff);
+    outputs_r[frame] += static_cast<int16_t>((r * 0.5) * 0x7fff);
   }
 
   if (fabs(tl) < 1.0e-10) tl = 0.0f; //anti-denormal