Remove -1 from centerFrequencies index to stop centerFrequencies[0], …

…set earlier in the method, being overwritten

src/core/be/tarsos/dsp/mfcc/MFCC.java

@@ -127,7 +127,7 @@ public final void calculateFilterBanks() {
         //Calculates te centerfrequencies.
         for (int i = 1; i <= amountOfMelFilters; i++) {
             float fc = (inverseMel(mel[0] + factor * i) / sampleRate) * samplesPerFrame;
-            centerFrequencies[i - 1] = Math.round(fc);
+            centerFrequencies[i] = Math.round(fc);
         }
 
     }