Class LbrLspQuant

java.lang.Object

javaforce.codec.speex.LspQuant

javaforce.codec.speex.LbrLspQuant

All Implemented Interfaces:

Codebook

public class LbrLspQuant
extends LspQuant

LSP Quantisation and Unquantisation (Lbr)

Version:

$Revision$

Author:

Jim Lawrence, helloNetwork.com, Marc Gimpel, Wimba S.A. ([email protected])

Field Summary

Fields inherited from class LspQuant

MAX_LSP_SIZE

Modifier and Type	Field	Description
static final int	MAX_LSP_SIZE

Fields inherited from interface Codebook

cdbk_nb, cdbk_nb_high1, cdbk_nb_high2, cdbk_nb_low1, cdbk_nb_low2, exc_10_16_table, exc_10_32_table, exc_20_32_table, exc_5_256_table, exc_5_64_table, exc_8_128_table, gain_cdbk_lbr, gain_cdbk_nb, h0, h1, hexc_10_32_table, hexc_table, high_lsp_cdbk, high_lsp_cdbk2, NB_CDBK_SIZE, NB_CDBK_SIZE_HIGH1, NB_CDBK_SIZE_HIGH2, NB_CDBK_SIZE_LOW1, NB_CDBK_SIZE_LOW2

Modifier and Type	Field	Description
static final int[]	cdbk_nb	Codebook (narrowband)
static final int[]	cdbk_nb_high1	Codebook (narrowband)
static final int[]	cdbk_nb_high2	Codebook (narrowband)
static final int[]	cdbk_nb_low1	Codebook (narrowband)
static final int[]	cdbk_nb_low2	Codebook (narrowband)
static final int[]	exc_10_16_table	Excitation Codebook
static final int[]	exc_10_32_table	Excitation Codebook
static final int[]	exc_20_32_table	Excitation Codebook
static final int[]	exc_5_256_table	Excitation Codebook
static final int[]	exc_5_64_table	Excitation Codebook
static final int[]	exc_8_128_table	Excitation Codebook
static final int[]	gain_cdbk_lbr	Gain Codebook (LBR)
static final int[]	gain_cdbk_nb	Gain Codebook (narrowband)
static final float[]	h0	QMF (Quadratic Mirror Filter) table
static final float[]	h1	QMF (Quadratic Mirror Filter) table
static final int[]	hexc_10_32_table	Excitation Codebook
static final int[]	hexc_table	Excitation Codebook
static final int[]	high_lsp_cdbk	LSP Codebook (high)
static final int[]	high_lsp_cdbk2	LSP Codebook (high)
static final int	NB_CDBK_SIZE
static final int	NB_CDBK_SIZE_HIGH1
static final int	NB_CDBK_SIZE_HIGH2
static final int	NB_CDBK_SIZE_LOW1
static final int	NB_CDBK_SIZE_LOW2

Constructor Summary

Constructors

Constructor	Description
LbrLspQuant()

Method Summary

Modifier and Type	Method	Description
final void	quant(float[] lsp, float[] qlsp, int order, Bits bits)	Line Spectral Pair Quantification (Lbr).
final void	unquant(float[] lsp, int order, Bits bits)	Line Spectral Pair Unquantification (Lbr).

Methods inherited from class LspQuant

lsp_quant, lsp_weight_quant, unpackPlus

Modifier and Type	Method	Description
protected static int	lsp_quant(float[] x, int xs, int[] cdbk, int nbVec, int nbDim)	LSP quantification Note: x is modified
protected static int	lsp_weight_quant(float[] x, int xs, float[] weight, int ws, int[] cdbk, int nbVec, int nbDim)	LSP weighted quantification Note: x is modified
protected void	unpackPlus(float[] lsp, int[] tab, Bits bits, float k, int ti, int li)	Read the next 6 bits from the buffer, and using the value read and the given codebook, rebuild LSP table.

Methods inherited from class Object

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

Constructor Details

LbrLspQuant

public LbrLspQuant()

Method Details

quant

public final void quant(float[] lsp,
 float[] qlsp,
 int order,
 Bits bits)

Line Spectral Pair Quantification (Lbr).

Specified by:

quant in class LspQuant

Parameters:

lsp - - Line Spectral Pairs table.

qlsp - - Quantified Line Spectral Pairs table.

order -

bits - - Speex bits buffer.

unquant

public final void unquant(float[] lsp,
 int order,
 Bits bits)

Line Spectral Pair Unquantification (Lbr).

Specified by:

unquant in class LspQuant

Parameters:

lsp - - Line Spectral Pairs table.

order -

bits - - Speex bits buffer.