org.xiph.speex

Class SplitShapeSearch

java.lang.Object

org.xiph.speex.CbSearch

org.xiph.speex.SplitShapeSearch

public class SplitShapeSearch
extends CbSearch

Split shape codebook search

Version:

$Revision: 1.2 $

Author:

Jim Lawrence, helloNetwork.com, Marc Gimpel, Wimba S.A. (mgimpel@horizonwimba.com)

Field Summary

Fields

Modifier and Type	Field and Description
private float[]	e
private float[]	E
private int	have_sign
private int[]	ind
static int	MAX_COMPLEXITY
private int	nb_subvect
private int[][]	nind
private float[][]	nt
private int[][]	oind
private float[][]	ot
private float[]	r2
private int	shape_bits
private int[]	shape_cb
private int	shape_cb_size
private int[]	signs
private int	subframesize
private int	subvect_size
private float[]	t

Constructor Summary

Constructors

Constructor and Description
SplitShapeSearch(int subframesize, int subvect_size, int nb_subvect, int[] shape_cb, int shape_bits, int have_sign) Constructor

Method Summary

Modifier and Type	Method and Description
void	quant(float[] target, float[] ak, float[] awk1, float[] awk2, int p, int nsf, float[] exc, int es, float[] r, Bits bits, int complexity) Codebook Search Quantification (Split Shape).
void	unquant(float[] exc, int es, int nsf, Bits bits) Codebook Search Unquantification (Split Shape).

Methods inherited from class java.lang.Object

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

Field Detail

MAX_COMPLEXITY

public static final int MAX_COMPLEXITY

See Also:

Constant Field Values

subframesize

private int subframesize

subvect_size

private int subvect_size

nb_subvect

private int nb_subvect

shape_cb

private int[] shape_cb

shape_cb_size

private int shape_cb_size

shape_bits

private int shape_bits

have_sign

private int have_sign

ind

private int[] ind

signs

private int[] signs

t

private float[] t

e

private float[] e

E

private float[] E

r2

private float[] r2

ot

private float[][] ot

nt

private float[][] nt

nind

private int[][] nind

oind

private int[][] oind

Constructor Detail

SplitShapeSearch

public SplitShapeSearch(int subframesize,
                        int subvect_size,
                        int nb_subvect,
                        int[] shape_cb,
                        int shape_bits,
                        int have_sign)

Constructor

Parameters:

subframesize -

subvect_size -

nb_subvect -

shape_cb -

shape_bits -

have_sign -

Method Detail

quant

public final void quant(float[] target,
                        float[] ak,
                        float[] awk1,
                        float[] awk2,
                        int p,
                        int nsf,
                        float[] exc,
                        int es,
                        float[] r,
                        Bits bits,
                        int complexity)

Codebook Search Quantification (Split Shape).

Specified by:

quant in class CbSearch

Parameters:

target - target vector

ak - LPCs for this subframe

awk1 - Weighted LPCs for this subframe

awk2 - Weighted LPCs for this subframe

p - number of LPC coeffs

nsf - number of samples in subframe

exc - excitation array.

es - position in excitation array.

r -

bits - Speex bits buffer.

complexity -

unquant

public final void unquant(float[] exc,
                          int es,
                          int nsf,
                          Bits bits)

Codebook Search Unquantification (Split Shape).

Specified by:

unquant in class CbSearch

Parameters:

exc - - excitation array.

es - - position in excitation array.

nsf - - number of samples in subframe.

bits - - Speex bits buffer.