signal
Class Hilbert

java.lang.Object
  signal.Hilbert

public class Hilbert
extends java.lang.Object

Functions to calculate the Hilbert transform of data.

Author:

Doug

Field Summary

private FastFFT	fastFFT
private FFT	fft
private Complex[]	fullFFTArray
private double[]	storedData1221
private Complex[]	storedFFTArray

Constructor Summary

Hilbert()

Method Summary

private double[]	get1221Data(int length) Get an array of 12222100000 to use as a multiplier in the Hilbert transform
double[]	getHilbert(double[] signal) Calculate the Hilbert Transform of a sample of data.
Complex[]	getHilbertC(double[] signal)
Complex[]	getHilbertC(double[] signal, int fftLength)
private void	makeStorageArrays(int fftLength) Make sure storage arrays are correctly allocated.

Methods inherited from class java.lang.Object

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

Field Detail

fastFFT

private FastFFT fastFFT

fft

private FFT fft

storedFFTArray

private Complex[] storedFFTArray

fullFFTArray

private Complex[] fullFFTArray

storedData1221

private double[] storedData1221

Constructor Detail

Hilbert

public Hilbert()

Method Detail

getHilbertC

public Complex[] getHilbertC(double[] signal)

getHilbertC

public Complex[] getHilbertC(double[] signal,
                             int fftLength)

getHilbert

public double[] getHilbert(double[] signal)

Calculate the Hilbert Transform of a sample of data. and return as a real array of the magnitude

Parameters:

signal - signal waveform

Returns:

Complex Hilbert Transform of the data.

get1221Data

private double[] get1221Data(int length)

Get an array of 12222100000 to use as a multiplier in the Hilbert transform

Parameters:

length - of array

Returns:

array of coefficients.

makeStorageArrays

private void makeStorageArrays(int fftLength)

Make sure storage arrays are correctly allocated.

Parameters:

fftLength -