Several small but necessary fixes!

effect_modulated_chorus.cpp

@@ -116,18 +116,13 @@ void AudioEffectModulatedDelay::update(void)
 
 #ifdef INTERPOLATE
       // get x/y values around mod_idx
-      uint16_t i_mod_idx = int(mod_idx + 0.5);
       uint8_t c = 0;
       for (j = INTERPOLATION_WINDOW_SIZE / -2; j <= INTERPOLATION_WINDOW_SIZE / 2; j++)
       {
-        int16_t ji_mod_idx = i_mod_idx + j;
-        if (ji_mod_idx > _delay_length)
-          y[c] = float(_delayline[ji_mod_idx - _delay_length - 1]);
-        else if (ji_mod_idx < 0)
-          y[c] = float(_delayline[_delay_length + j + 1]);
-        else
-          y[c] = float(_delayline[ji_mod_idx]);
-        c++; // ;-)
+        y[c] = float(_delayline[(int(mod_idx + 0.5) + _circ_idx + j) % _delay_length]);
+        if (y[c] < 0)
+          y[c] = _delay_length + y[c];
+        c++; // because 42 is the answer! ;-)
       }
 
       modulation_interpolate.valueI(mod_idx);

mdaEPiano.cpp

@@ -253,7 +253,7 @@ void mdaEPiano::setOverdrive(float value)
 void mdaEPiano::setLoudness(float value)
 {
   //volume = value * 0.32258; // 0.00002 * 127^2
-  volume = 0.2f;
+  volume = value * 0.2f;
 }
 
 void mdaEPiano::setParameter(int32_t index, float value)