math.jwave.transforms.wavelets

Class Wavelet

java.lang.Object

math.jwave.transforms.wavelets.Wavelet

All Implemented Interfaces:

WaveletInterface

Direct Known Subclasses:

Coif06, Daub02, Daub03, Daub04, Haar02, Haar02Orthogonal, Lege02, Lege04, Lege06

public abstract class Wavelet
extends java.lang.Object
implements WaveletInterface

Basic class for one wavelet keeping coefficients of the wavelet function, the scaling function, the base wavelength, the forward transform method, and the reverse transform method.

Constructor Summary

Constructors

Constructor and Description
Wavelet() Constructor; predefine members to init values

Method Summary

Modifier and Type	Method and Description
double[]	forward(double[] arrTime) Performs the forward transform for the given array from time domain to Hilbert domain and returns a new array of the same size keeping coefficients of Hilbert domain and should be of length 2 to the power of p -- length = 2^p where p is a positive integer.
double[]	getCoeffs() Returns a double array with the coeffs.
int	getLength() Returns the number of coeffs (and scales).
double[]	getScales() Returns a double array with the scales (of a wavelet).
int	getWaveLength() Returns the minimal wavelength for the used wavelet.
double[]	reverse(double[] arrHilb) Performs the reverse transform for the given array from Hilbert domain to time domain and returns a new array of the same size keeping coefficients of time domain and should be of length 2 to the power of p -- length = 2^p where p is a positive integer.

Methods inherited from class java.lang.Object

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

Constructor Detail

Wavelet

public Wavelet()

Constructor; predefine members to init values

Method Detail

forward

public double[] forward(double[] arrTime)

Performs the forward transform for the given array from time domain to Hilbert domain and returns a new array of the same size keeping coefficients of Hilbert domain and should be of length 2 to the power of p -- length = 2^p where p is a positive integer.

Specified by:

forward in interface WaveletInterface

Parameters:

arrTime - array keeping time domain coefficients

Returns:

coefficients represented by frequency domain

reverse

public double[] reverse(double[] arrHilb)

Performs the reverse transform for the given array from Hilbert domain to time domain and returns a new array of the same size keeping coefficients of time domain and should be of length 2 to the power of p -- length = 2^p where p is a positive integer.

Specified by:

reverse in interface WaveletInterface

Parameters:

arrHilb - array keeping frequency domain coefficients

Returns:

coefficients represented by time domain

getWaveLength

public int getWaveLength()

Returns the minimal wavelength for the used wavelet.

Specified by:

getWaveLength in interface WaveletInterface

Returns:

the minimal wavelength for this basic wave

getLength

public int getLength()

Returns the number of coeffs (and scales).

Returns:

integer representing the number of coeffs.

getCoeffs

public double[] getCoeffs()

Returns a double array with the coeffs.

Specified by:

getCoeffs in interface WaveletInterface

Returns:

double array keeping the coeffs.

getScales

public double[] getScales()

Returns a double array with the scales (of a wavelet).

Specified by:

getScales in interface WaveletInterface

Returns:

double array keeping the scales.