org.xiph.speex
Class VQ

java.lang.Object
  org.xiph.speex.VQ

public class VQ

extends java.lang.Object

Vector Quantization.

Version:

$Revision: 1.4 $

Author:

Marc Gimpel, Wimba S.A. (marc@wimba.com)

Constructor Summary

VQ()

Method Summary

static int	index(float[] in, float[] codebook, int len, int entries) Finds the index of the entry in a codebook that best matches the input.
static int	index(float in, float[] codebook, int entries) Finds the index of the entry in a codebook that best matches the input.
static void	nbest_sign(float[] in, int offset, float[] codebook, int len, int entries, float[] E, int N, int[] nbest, float[] best_dist) Finds the indices of the n-best entries in a codebook with sign
static void	nbest(float[] in, int offset, float[] codebook, int len, int entries, float[] E, int N, int[] nbest, float[] best_dist) Finds the indices of the n-best entries in a codebook

Methods inherited from class java.lang.Object

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

Constructor Detail

VQ

public VQ()

Method Detail

index

public static final int index(float in,
                              float[] codebook,
                              int entries)

Finds the index of the entry in a codebook that best matches the input.

Parameters:

in - - the value to compare.

codebook - - the list of values to search through for the best match.

entries - - the size of the codebook.

Returns:

the index of the entry in a codebook that best matches the input.

index

public static final int index(float[] in,
                              float[] codebook,
                              int len,
                              int entries)

Finds the index of the entry in a codebook that best matches the input.

Parameters:

in - - the vector to compare.

codebook - - the list of values to search through for the best match.

len - - the size of the vector.

entries - - the size of the codebook.

Returns:

the index of the entry in a codebook that best matches the input.

nbest

public static final void nbest(float[] in,
                               int offset,
                               float[] codebook,
                               int len,
                               int entries,
                               float[] E,
                               int N,
                               int[] nbest,
                               float[] best_dist)

Finds the indices of the n-best entries in a codebook

Parameters:

in -

offset -

codebook -

len -

entries -

E -

N -

nbest -

best_dist -

nbest_sign

public static final void nbest_sign(float[] in,
                                    int offset,
                                    float[] codebook,
                                    int len,
                                    int entries,
                                    float[] E,
                                    int N,
                                    int[] nbest,
                                    float[] best_dist)

Finds the indices of the n-best entries in a codebook with sign

Parameters:

in -

offset -

codebook -

len -

entries -

E -

N -

nbest -

best_dist -