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Denny
2017-12-27 10:10:51 -05:00
parent 667c50174d
commit 236df8f3f4
262 changed files with 7701 additions and 49122 deletions
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144
src/main/java/io/github/dsheirer/module/demodulate/am/AMDemodulatorModule.java
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@@ -30,95 +30,81 @@ import io.github.dsheirer.sample.complex.IComplexBufferListener;
import io.github.dsheirer.sample.real.IFilteredRealBufferProvider;
import io.github.dsheirer.sample.real.RealBuffer;
import java.util.concurrent.ScheduledExecutorService;
public class AMDemodulatorModule extends Module
implements IComplexBufferListener, IFilteredRealBufferProvider
implements IComplexBufferListener, IFilteredRealBufferProvider
{
private static final int SAMPLE_RATE = 48000;
private ComplexFIRFilter_CB_CB mIQFilter;
private AMDemodulator_CB mDemodulator;
private RealFIRFilter_RB_RB mLowPassFilter;
private static final int SAMPLE_RATE = 48000;
private ComplexFIRFilter_CB_CB mIQFilter;
private AMDemodulator_CB mDemodulator;
private RealFIRFilter_RB_RB mLowPassFilter;
private AutomaticGainControl_RB mAGC;
/**
* FM Demodulator with integrated DC removal and automatic frequency
* correction control.
*
* @param pass - pass frequency for IQ filtering prior to demodulation. This
* frequency should be half of the signal bandwidth since the filter will
* be applied against each of the inphase and quadrature signals and the
* combined pass bandwidth will be twice this value.
*
* @param stop - stop frequency for IQ filtering prior to demodulation.
*
* @param maxFrequencyCorrection - defines the maximum frequency +/- that
* the correction controller can adjust from the center tuned frequency.
* Set this value to 0 for no frequency correction control.
*/
public AMDemodulatorModule()
{
mIQFilter = new ComplexFIRFilter_CB_CB( FilterFactory.getLowPass(
SAMPLE_RATE, 5000, 73, WindowType.HAMMING ), 1.0f );
mDemodulator = new AMDemodulator_CB( 500.0f );
mIQFilter.setListener( mDemodulator );
/**
* AM Demodulator Module
*/
public AMDemodulatorModule()
{
mIQFilter = new ComplexFIRFilter_CB_CB(FilterFactory.getLowPass(
SAMPLE_RATE, 5000, 73, WindowType.HAMMING), 1.0f);
mLowPassFilter = new RealFIRFilter_RB_RB(
FilterFactory.getLowPass( 48000, 3000, 31, WindowType.COSINE ), 1.0f );
mDemodulator.setListener( mLowPassFilter );
mAGC = new AutomaticGainControl_RB();
mLowPassFilter.setListener( mAGC );
}
mDemodulator = new AMDemodulator_CB(500.0f);
mIQFilter.setListener(mDemodulator);
@Override
public Listener<ComplexBuffer> getComplexBufferListener()
{
return mIQFilter;
}
mLowPassFilter = new RealFIRFilter_RB_RB(
FilterFactory.getLowPass(48000, 3000, 31, WindowType.COSINE), 1.0f);
mDemodulator.setListener(mLowPassFilter);
@Override
public void dispose()
{
mIQFilter.dispose();
mIQFilter = null;
mDemodulator.dispose();
mDemodulator = null;
mLowPassFilter.dispose();
mLowPassFilter = null;
mAGC.dispose();
mAGC = null;
}
mAGC = new AutomaticGainControl_RB();
mLowPassFilter.setListener(mAGC);
}
@Override
public void reset()
{
}
@Override
public Listener<ComplexBuffer> getComplexBufferListener()
{
return mIQFilter;
}
@Override
public void setFilteredRealBufferListener( Listener<RealBuffer> listener )
{
mAGC.setListener( listener );
}
@Override
public void dispose()
{
mIQFilter.dispose();
mIQFilter = null;
@Override
public void removeFilteredRealBufferListener()
{
mAGC.removeListener();
}
mDemodulator.dispose();
mDemodulator = null;
@Override
public void start( ScheduledExecutorService executor )
{
}
mLowPassFilter.dispose();
mLowPassFilter = null;
@Override
public void stop()
{
}
mAGC.dispose();
mAGC = null;
}
@Override
public void reset()
{
}
@Override
public void setFilteredRealBufferListener(Listener<RealBuffer> listener)
{
mAGC.setListener(listener);
}
@Override
public void removeFilteredRealBufferListener()
{
mAGC.removeListener();
}
@Override
public void start()
{
}
@Override
public void stop()
{
}
}