org.barrelorgandiscovery.tools

Class FFT

java.lang.Object

org.barrelorgandiscovery.tools.FFT

public class FFT
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
FFT(int n)

Method Summary

Modifier and Type	Method and Description
protected static void	beforeAfter(FFT fft, double[] re, double[] im)
void	fft(double[] x, double[] y) fft.c Douglas L.
double[]	getWindow()
static void	main(java.lang.String[] args)
protected void	makeWindow()
protected static void	printReIm(double[] re, double[] im)

Methods inherited from class java.lang.Object

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

Constructor Detail

FFT

public FFT(int n)

Method Detail

makeWindow

protected void makeWindow()

getWindow

public double[] getWindow()

fft

public void fft(double[] x,
                double[] y)

fft.c Douglas L. Jones University of Illinois at Urbana-Champaign January 19, 1992 http://cnx.rice.edu/content/m12016/latest/ fft: in-place radix-2 DIT DFT of a complex input input: n: length of FFT: must be a power of two m: n = 2**m input/output x: double array of length n with real part of data y: double array of length n with imag part of data Permission to copy and use this program is granted as long as this header is included.

main

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

beforeAfter

protected static void beforeAfter(FFT fft,
                                  double[] re,
                                  double[] im)

printReIm

protected static void printReIm(double[] re,
                                double[] im)