marytts.signalproc.analysis.distance

Class DistanceComputer

java.lang.Object

marytts.signalproc.analysis.distance.DistanceComputer

public class DistanceComputer
extends Object

A general purpose class for computing various distance measures Examples include Euclidean, Mahalanobis, distance to GMMs etc.

Author:

Oytun Türk

Field Summary

Fields

Modifier and Type	Field and Description
static int	ABSOLUTE_VALUE_DISTANCE
static int	EUCLIDEAN_DISTANCE
static int	MAHALANOBIS_DISTANCE
static int	NORMALIZED_EUCLIDEAN_DISTANCE

Constructor Summary

Constructors

Constructor and Description
DistanceComputer()

Method Summary

Methods

Modifier and Type	Method and Description
static double	getAbsoluteValueDistance(double[] x, double[] y)
static double	getEuclideanDistance(double[] x, double[] y)
static double	getLsfInverseHarmonicDistance(double[] lsfs1, double[] lsfs2, double freqRange)
static double	getLsfInverseHarmonicDistanceSymmetric(double[] lsfs1, double[] lsfs2, double alpha, double freqRange)
static double[]	getLsfWeights(double[] lsfs, double freqRange)
static double	getMahalanobisDistance(double[] x, double[] mean, double[][] inverseCovarianceMatrix)
static double	getNormalizedEuclideanDistance(double[] x, double[] y, double[] variances)

Methods inherited from class java.lang.Object

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

Field Detail

ABSOLUTE_VALUE_DISTANCE

public static final int ABSOLUTE_VALUE_DISTANCE

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Constant Field Values

EUCLIDEAN_DISTANCE

public static final int EUCLIDEAN_DISTANCE

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Constant Field Values

NORMALIZED_EUCLIDEAN_DISTANCE

public static final int NORMALIZED_EUCLIDEAN_DISTANCE

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Constant Field Values

MAHALANOBIS_DISTANCE

public static final int MAHALANOBIS_DISTANCE

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Constant Field Values

Constructor Detail

DistanceComputer

public DistanceComputer()

Method Detail

getAbsoluteValueDistance

public static double getAbsoluteValueDistance(double[] x,
                              double[] y)

getEuclideanDistance

public static double getEuclideanDistance(double[] x,
                          double[] y)

getNormalizedEuclideanDistance

public static double getNormalizedEuclideanDistance(double[] x,
                                    double[] y,
                                    double[] variances)

getLsfInverseHarmonicDistance

public static double getLsfInverseHarmonicDistance(double[] lsfs1,
                                   double[] lsfs2,
                                   double freqRange)

getLsfInverseHarmonicDistanceSymmetric

public static double getLsfInverseHarmonicDistanceSymmetric(double[] lsfs1,
                                            double[] lsfs2,
                                            double alpha,
                                            double freqRange)

getLsfWeights

public static double[] getLsfWeights(double[] lsfs,
                     double freqRange)

getMahalanobisDistance

public static double getMahalanobisDistance(double[] x,
                            double[] mean,
                            double[][] inverseCovarianceMatrix)