SciLib.SP
Class Sp

java.lang.Object
  SciLib.SP.Sp

public final class Sp
extends java.lang.Object

This class contains some useful methods using in Signal Processing.

Constructor Summary

Sp()

Method Summary

static vector	conv(double[] x, double[] y) Computer the linear convolution of two signals x*y
static vector	conv(vector x, vector y) Computer the linear convolution of two signals x*y
static vector	filter(double[] b, double[] a, double[] x) Filters the data in vector x with the filter described by vectors a and b
static vector	filter(vector b, vector a, vector x) Filters the data in vector x with the filter described by vectors a and b
static double	muCode(double x, int mu) Compute the muLaw code of a double x, -1 <= x <= 1
static vector	muCode(vector x, int mu) Compute the muLaw code of a double x, 0 <= x <= 1
static double	power(vector s) Computer the power of a finite signal

Methods inherited from class java.lang.Object

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

Constructor Detail

Sp

public Sp()

Method Detail

power

public static double power(vector s)

Computer the power of a finite signal

Parameters:

s - A vector that represents the signal

Returns:

A double value

conv

public static vector conv(double[] x,
                          double[] y)

Computer the linear convolution of two signals x*y

Parameters:

x - A double array

y - A double array

Returns:

A vector

conv

public static vector conv(vector x,
                          vector y)

Computer the linear convolution of two signals x*y

Parameters:

x - A vector signal

y - A vector signal

Returns:

A vector

filter

public static vector filter(vector b,
                            vector a,
                            vector x)

Filters the data in vector x with the filter described by vectors a and b

Parameters:

x - A vector signal

b - A filter coefficient vector

a - A filter coefficient vector

Returns:

A vector

filter

public static vector filter(double[] b,
                            double[] a,
                            double[] x)

Filters the data in vector x with the filter described by vectors a and b

Parameters:

x - A double array signal

b - A filter coefficient array

a - A filter coefficient array

Returns:

A vector

muCode

public static double muCode(double x,
                            int mu)

Compute the muLaw code of a double x, -1 <= x <= 1

Parameters:

x - A double value

mu - An integer value, mu = 0, 1, 100, 255

Returns:

A double value

muCode

public static vector muCode(vector x,
                            int mu)

Compute the muLaw code of a double x, 0 <= x <= 1

Parameters:

x - A double value

mu - An integer value, mu = 0, 1, 100, 255

Returns:

A double value