Adds event logging, code cleanup and some decoder issue resolution.

src/dsp/filter/FilterFactory.java

@@ -26,7 +26,6 @@ import java.util.Arrays;
 import java.util.Set;
 import java.util.TreeSet;
 
-import org.jtransforms.fft.DoubleFFT_1D;
 import org.jtransforms.fft.FloatFFT_1D;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

src/dsp/filter/PolyphaseFIRInterpolatingFilter.java

@@ -1,7 +1,5 @@
 package dsp.filter;
 
-import java.util.Arrays;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

src/dsp/fm/FMDemodulator_CB.java

@@ -20,7 +20,6 @@ package dsp.fm;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import record.wave.ComplexWaveRecorder;
 import sample.Listener;
 import sample.complex.ComplexBuffer;
 import sample.real.RateCounter_RB;

src/dsp/gain/ComplexFeedForwardGainControl.java

@@ -3,7 +3,6 @@ package dsp.gain;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import sample.Listener;
 import sample.complex.Complex;
 import sample.complex.ComplexSampleListener;
 import buffer.FloatCircularBuffer;
@@ -62,6 +61,11 @@ public class ComplexFeedForwardGainControl implements ComplexSampleListener
 	{
 		mEnvelopeHistory = new FloatCircularBuffer( window );
 	}
+	
+	public void dispose()
+	{
+		mListener = null;
+	}
 
 	@Override
 	public void receive( float inphase, float quadrature )

src/dsp/gain/DirectGainControl.java

@@ -57,6 +57,11 @@ public class DirectGainControl implements GainController, RealSampleListener
 		mMaximum = maximum;
 		mIncrement = increment;
 	}
+	
+	public void dispose()
+	{
+		mListener = null;
+	}
 
 	@Override
     public void receive( float sample )

src/dsp/psk/CQPSKDemodulator.java

@@ -84,6 +84,12 @@ public class CQPSKDemodulator implements Instrumentable, ComplexSampleListener
 	{
 	}
 	
+	public void dispose()
+	{
+		mSymbolListener = null;
+		mFrequencyChangeListener = null;
+	}
+	
 	public void setSymbolListener( Listener<Complex> listener )
 	{
 		mSymbolListener = listener;

src/dsp/psk/CQPSKDemodulator2.java

@@ -127,6 +127,7 @@ public class CQPSKDemodulator2 implements Instrumentable, ComplexSampleListener,
 	 * Constrains timing error to +/- the maximum value and corrects any
 	 * floating point invalid numbers
 	 */
+	@SuppressWarnings("unused")
 	private float normalize( float error, float maximum )
 	{
 		if( Float.isNaN( error ) )