Small fixes.

MicroMDAEPiano.ino

@@ -76,9 +76,11 @@ AudioConnection          patchCord14(freeverb_r, 0, mixer_r, 1);
 AudioConnection          patchCord15(freeverb_l, 0, mixer_l, 1);
 AudioConnection          patchCord16(mixer_r, volume_r);
 AudioConnection          patchCord17(mixer_l, volume_l);
+#ifdef USB_AUDIO
 AudioOutputUSB           usb1;
 AudioConnection          patchCord18(volume_r, 0, usb1, 0);
 AudioConnection          patchCord19(volume_l, 0, usb1, 1);
+#endif
 AudioOutputI2S           i2s1;
 AudioConnection          patchCord20(volume_r, 0, i2s1, 0);
 AudioConnection          patchCord21(volume_l, 0, i2s1, 1);
@@ -229,11 +231,11 @@ void setup()
   modulator.phase(0);
   modulator.offset(0.0);
   modulator_filter.setLowpass(0, CHORUS_MODULATOR_FILTER_FRQ, CHORUS_MODULATOR_FILTER_Q);
-  inverter.gain(-1.0); // change phase for second moduleated delay
+  inverter.gain(-1.0); // change phase for second modulated delay (faked stereo mode)
 
   // internal mixing of original signal(0), reverb(1) and chorus(2)
-  mixer_r.gain(VOL_MAIN, 0.4);
-  mixer_l.gain(VOL_MAIN, 0.4);
+  mixer_r.gain(VOL_MAIN, 0.5);
+  mixer_l.gain(VOL_MAIN, 0.5);
   mixer_r.gain(VOL_REVERB, 0.2);
   mixer_l.gain(VOL_REVERB, 0.2);
   mixer_r.gain(VOL_CHORUS, 0.2);

config.h

@@ -51,7 +51,6 @@
 //* AUDIO SETTINGS
 //*************************************************************************************************
 
-#define VOLUME 0.8
 #define AUDIO_MEM 128
 #define SAMPLE_RATE AUDIO_SAMPLE_RATE
 #define REDUCE_LOUDNESS 0
@@ -77,6 +76,8 @@
 //* HARDWARE SETTINGS
 //*************************************************************************************************
 
+#define USB_AUDIO 1
+
 // Teensy Audio Shield:
 /* Values for SGTL5000_LINEOUT_LEVEL
   13: 3.16 Volts p-p

utility/gen_xfade.sh

@@ -5,5 +5,5 @@ sed -i 's/PROGMEM//' mdaEPianoData.h
 sed -i 's/const//' mdaEPianoData.h
 gcc -o xfade_generator xfade_generator.c
 rm mdaEPianoData.h
-./xfade_generator >../mdaEPianoData_xfade.h
+./xfade_generator >../mdaEPianoDataXfade.h
 rm xfade_generator