com.oregondsp.signalProcessing
Class Window

java.lang.Object
  com.oregondsp.signalProcessing.Window

Direct Known Subclasses:

HammingWindow, HanningWindow

public class Window
extends java.lang.Object

Base class for implementing windows - partial implementation.

Constructor Summary

Window(float[] w)
Instantiates a new Window from a vector of coefficients.

Window(int N)
Instantiates a new length-N window containing zeros.

Method Summary

float[]	getArray() Returns a copy of the coefficients of this window.
int	length() Returns the length of the window in samples.
void	timesEquals(float[] x) Allows a window to be modified in-place by multiplication by another window.
void	window(float[] x, int index, float[] y) Windows a sequence and places the result in a specified array.

Methods inherited from class java.lang.Object

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

Constructor Detail

Window

public Window(float[] w)

Instantiates a new Window from a vector of coefficients.

Parameters:

w - float[] containin the vector of window coefficients.

Window

public Window(int N)

Instantiates a new length-N window containing zeros.

Parameters:

N - int specifying the window length in samples.

Method Detail

length

public int length()

Returns the length of the window in samples.

Returns:

int containing the window length in samples.

timesEquals

public void timesEquals(float[] x)

Allows a window to be modified in-place by multiplication by another window.

Parameters:

x - float[] containing the coefficients of the second window, which modifies the first (this) window.

getArray

public float[] getArray()

Returns a copy of the coefficients of this window.

Returns:

float[] containing window coefficients.

window

public void window(float[] x,
                   int index,
                   float[] y)

Windows a sequence and places the result in a specified array.

Parameters:

x - float[] containing the sequence to be windowed by this Window.

index - start point in the input sequence at which this Window is applied.

y - float[] containing the resulting windowed sequence.