de.dfki.lt.signalproc
Class FFTMixedRadix

java.lang.Object
  de.dfki.lt.signalproc.FFTMixedRadix

public class FFTMixedRadix
extends java.lang.Object

Constructor Summary

FFTMixedRadix()

Method Summary

static double[]	fftAbsSpectrum(double[] x)
static double[]	fftAbsSpectrum(double[] x, int fftSize)
static MathUtils.Complex	fftComplex(MathUtils.Complex x)
static MathUtils.Complex	fftComplex(MathUtils.Complex x, int fftSize)
static double[]	fftPowerSpectrum(double[] x)
static double[]	fftPowerSpectrum(double[] x, int fftSize)
static MathUtils.Complex	fftReal(double[] x, int xlen)
static MathUtils.Complex	fftReal(double[] x, int xlen, int fftSize)
static MathUtils.Complex	ifft(MathUtils.Complex x)
static MathUtils.Complex	ifft(MathUtils.Complex x, int ifftSize)
static double[]	ifftReal(MathUtils.Complex x, int ifftSize)
static void	main(java.lang.String[] args)
static void	test_fft_ifft_real_random()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FFTMixedRadix

public FFTMixedRadix()

Method Detail

fftPowerSpectrum

public static double[] fftPowerSpectrum(double[] x)

fftPowerSpectrum

public static double[] fftPowerSpectrum(double[] x,
                                        int fftSize)

fftAbsSpectrum

public static double[] fftAbsSpectrum(double[] x)

fftAbsSpectrum

public static double[] fftAbsSpectrum(double[] x,
                                      int fftSize)

fftReal

public static MathUtils.Complex fftReal(double[] x,
                                        int xlen)

fftReal

public static MathUtils.Complex fftReal(double[] x,
                                        int xlen,
                                        int fftSize)

fftComplex

public static MathUtils.Complex fftComplex(MathUtils.Complex x,
                                           int fftSize)

fftComplex

public static MathUtils.Complex fftComplex(MathUtils.Complex x)

ifft

public static MathUtils.Complex ifft(MathUtils.Complex x,
                                     int ifftSize)

ifft

public static MathUtils.Complex ifft(MathUtils.Complex x)

ifftReal

public static double[] ifftReal(MathUtils.Complex x,
                                int ifftSize)

test_fft_ifft_real_random

public static void test_fft_ifft_real_random()

main

public static void main(java.lang.String[] args)

Parameters:

args -