Avoid some compiler warnings

src/audiocurves/HighFrequencyAudioCurve.cpp

@@ -42,7 +42,7 @@ HighFrequencyAudioCurve::reset()
 }
 
 float
-HighFrequencyAudioCurve::processFloat(const float *R__ mag, int increment)
+HighFrequencyAudioCurve::processFloat(const float *R__ mag, int)
 {
     float result = 0.0;
 
@@ -56,7 +56,7 @@ HighFrequencyAudioCurve::processFloat(const float *R__ mag, int increment)
 }
 
 double
-HighFrequencyAudioCurve::processDouble(const double *R__ mag, int increment)
+HighFrequencyAudioCurve::processDouble(const double *R__ mag, int)
 {
     float result = 0.0;
 

src/audiocurves/PercussiveAudioCurve.cpp

@@ -58,7 +58,7 @@ PercussiveAudioCurve::setFftSize(int newSize)
 }
 
 float
-PercussiveAudioCurve::processFloat(const float *R__ mag, int increment)
+PercussiveAudioCurve::processFloat(const float *R__ mag, int)
 {
     static float threshold = powf(10.f, 0.15f); // 3dB rise in square of magnitude
     static float zeroThresh = powf(10.f, -8);
@@ -84,7 +84,7 @@ PercussiveAudioCurve::processFloat(const float *R__ mag, int increment)
 }
 
 double
-PercussiveAudioCurve::processDouble(const double *R__ mag, int increment)
+PercussiveAudioCurve::processDouble(const double *R__ mag, int)
 {
     static double threshold = pow(10., 0.15); // 3dB rise in square of magnitude
     static double zeroThresh = pow(10., -8);

src/audiocurves/SpectralDifferenceAudioCurve.cpp

@@ -62,7 +62,7 @@ SpectralDifferenceAudioCurve::setFftSize(int newSize)
 }
 
 float
-SpectralDifferenceAudioCurve::processFloat(const float *R__ mag, int increment)
+SpectralDifferenceAudioCurve::processFloat(const float *R__ mag, int)
 {
     double result = 0.0;
 
@@ -83,7 +83,7 @@ SpectralDifferenceAudioCurve::processFloat(const float *R__ mag, int increment)
 }
 
 double
-SpectralDifferenceAudioCurve::processDouble(const double *R__ mag, int increment)
+SpectralDifferenceAudioCurve::processDouble(const double *R__ mag, int)
 {
     double result = 0.0;