Adjust gain of noise generator

include/voice.h

@@ -98,11 +98,11 @@ public:
         float noiseBuf[bufferSize];
         if(settings->unison > 2) { // Stereo noise
             for(size_t i = 0; i < bufferSize; ++i) {
-                noiseBuf[i] = (1.f / 3.f) * (whiteNoise() + whiteNoise() + whiteNoise());
+                noiseBuf[i] = (1.f / 2.f) * (whiteNoise() + whiteNoise() + whiteNoise());
             }
         } else { // Mono noise
             for(size_t i = 0; i < bufferSize; i += 2 ) {
-                float noise = (1.f / 3.f) * (whiteNoise() + whiteNoise() + whiteNoise());
+                float noise = (1.f / 2.f) * (whiteNoise() + whiteNoise() + whiteNoise());
                 noiseBuf[i]     = noise;
                 noiseBuf[i + 1] = noise;
             }
@@ -132,4 +132,4 @@ public:
     }
 };
 
-#endif
+#endif