marf.math
Class Algorithms.LPC

java.lang.Object
  marf.math.Algorithms.LPC

Enclosing class:

Algorithms

public static final class Algorithms.LPC
extends java.lang.Object

A collection of LPC-related algorithms.

Author:

Ian Clement

Constructor Summary

Algorithms.LPC()

Method Summary

static double	autocorrelation(double[] padInput, int piX) Implements the least-square autocorrelation method.
static void	doLPC(double[] padInput, double[] padOutput, double[] padError, int piPoles) Does the LPC algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

Algorithms.LPC

public Algorithms.LPC()

Method Detail

doLPC

public static final void doLPC(double[] padInput,
                               double[] padOutput,
                               double[] padError,
                               int piPoles)
                        throws MathException

Does the LPC algorithm. NOTE: input is assumed to be windowed, ie: input.length = N.

Parameters:

padInput - windowed part of incoming sample

padOutput - resulting LPC coefficiencies

padError - output LPC error

piPoles - number of poles

Throws:

MathException

autocorrelation

public static final double autocorrelation(double[] padInput,
                                           int piX)

Implements the least-square autocorrelation method.

Parameters:

padInput - windowed input signal

piX - coefficient number

Returns:

double - correlation number