ambit2.domain.stats.transforms

Class FFT

java.lang.Object

ambit2.domain.stats.transforms.FFT

public class FFT
extends Object

Fast Fourie Transform class

Author:

Nina Jeliazkova
Modified 2005-2-2

Constructor Summary

Constructors

Constructor and Description
FFT() Creates a new instance of FFT class

Method Summary

Modifier and Type	Method and Description
boolean	convolution(double[] data, int n, double[] kernel, int nk) Convolution
boolean	FFT1(int NumSamples, double[] RealIn, double[] ImagIn, double[] RealOut, double[] ImagOut) FFT transform
boolean	iFFT1(int NumSamples, double[] RealIn, double[] ImagIn, double[] RealOut, double[] ImagOut) inverse FFT transform

Methods inherited from class java.lang.Object

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

Constructor Detail

FFT

public FFT()

Creates a new instance of FFT class

Method Detail

FFT1

public boolean FFT1(int NumSamples,
                    double[] RealIn,
                    double[] ImagIn,
                    double[] RealOut,
                    double[] ImagOut)

FFT transform

Parameters:

NumSamples -

RealIn -

ImagIn -

RealOut -

ImagOut -

Returns:

true if successful

iFFT1

public boolean iFFT1(int NumSamples,
                     double[] RealIn,
                     double[] ImagIn,
                     double[] RealOut,
                     double[] ImagOut)

inverse FFT transform

Parameters:

NumSamples -

RealIn -

ImagIn -

RealOut -

ImagOut -

Returns:

true if successful

convolution

public boolean convolution(double[] data,
                           int n,
                           double[] kernel,
                           int nk)

Convolution

Parameters:

data -

n -

kernel -

nk -

Returns:

true if successful