net.java.sip.communicator.impl.neomedia.codec.audio.g729
Class Ld8k

java.lang.Object
  net.java.sip.communicator.impl.neomedia.codec.audio.g729.Ld8k

Direct Known Subclasses:

Coder, CodLd8k, DecLd8k, Decoder, Postfil

 class Ld8k
extends Object

Author:

Lubomir Marinov (translation of ITU-T C source code to Java)

Field Summary

(package private) static float	AGC_FAC gain adjustment factor
(package private) static float	AGC_FAC1 gain adjustment factor
(package private) static float	ALPHA
(package private) static float	BETA
(package private) static short	BIT_0 Definition of zero-bit in bit-stream.
(package private) static short	BIT_1 Definition of one-bit in bit-stream.
(package private) static float	CONST12
(package private) static int	DIM_RR Size of correlation matrix
(package private) static int	F_UP_PST resolution for fractionnal delay
(package private) static int	FIR_SIZE_ANA
(package private) static int	FIR_SIZE_SYN
(package private) static float	FLT_MAX_G729 Largest floating point number
(package private) static float	FLT_MIN_G729 Largest floating point number
(package private) static float	GAIN_PIT_MAX maximum adaptive codebook gain
(package private) static float	GAMMA_G LT weighting factor
(package private) static float	GAMMA1_0
(package private) static float	GAMMA1_1
(package private) static float	GAMMA1_PST denominator weighting factor
(package private) static float	GAMMA2_0_H
(package private) static float	GAMMA2_0_L
(package private) static float	GAMMA2_1
(package private) static float	GAMMA2_PST numerator weighting factor
(package private) static float	GAMMA3_MINUS tilt weighting factor when k1<0
(package private) static float	GAMMA3_PLUS tilt weighting factor when k1>0
(package private) static float	GAP1
(package private) static float	GAP2
(package private) static float	GAP3
(package private) static float	GP0999 Maximum pitch gain if taming is needed
(package private) static float	GPCLIP Maximum pitch gain if taming is needed
(package private) static float	GPCLIP2 Maximum pitch gain if taming is needed
(package private) static int	GRID_POINTS Resolution of lsp search.
(package private) static float	INV_COEF
(package private) static float	INV_L_SUBFR
(package private) static int	L_FRAME LPC update frame size
(package private) static int	L_INTER10 Length for pitch interpolation
(package private) static int	L_INTER4 upsampling ration for pitch search
(package private) static int	L_INTERPOL Length of filter for interpolation.
(package private) static float	L_LIMIT
(package private) static int	L_NEXT Samples of next frame needed for LPC ana.
(package private) static int	L_SUBFR Sub-frame size
(package private) static int	L_SUBFRP1 Sub-frame size + 1
(package private) static int	L_TOTAL Total size of speech buffer
(package private) static int	L_WINDOW LPC analysis window size.
(package private) static int	LH_UP_L
(package private) static int	LH_UP_S
(package private) static int	LH2_L length of long interp.
(package private) static int	LH2_L_P1
(package private) static int	LH2_S length of short interp.
(package private) static int	LONG_H_ST impulse response length
(package private) static int	M LPC order.
(package private) static float	M_LIMIT
(package private) static int	MA_NP MA prediction order for LSP.
(package private) static int	MAX_TIME
(package private) static float	MEAN_ENER Average innovation energy
(package private) static int	MEM_RES2
(package private) static float	MIN_GPLT LT gain minimum
(package private) static int	MODE Number of modes for MA prediction.
(package private) static int	MP1 LPC order+1.
(package private) static int	MSIZE Size of vectors for cross-correlation between 2 pulses
(package private) static int	NB_POS Number of positions for each pulse
(package private) static int	NC LPC order / 2.
(package private) static int	NC0 Number of entries in first stage.
(package private) static int	NC0_B Number of bits in first stage.
(package private) static int	NC1 Number of entries in second stage.
(package private) static int	NC1_B Number of bits in second stage.
(package private) static int	NCAN1 Pre-selecting order for #1
(package private) static int	NCAN2 Pre-selecting order for #2
(package private) static int	NCODE1 Codebook 1 size
(package private) static int	NCODE1_B Number of Codebook-bit
(package private) static int	NCODE2 Codebook 2 size
(package private) static int	NCODE2_B Number of Codebook-bit
(package private) static float	PI
(package private) static float	PI04 pi*0.04
(package private) static float	PI92 pi*0.92
(package private) static int	PIT_MAX Maximum pitch lag in samples
(package private) static int	PIT_MIN Minimum pitch lag in samples
(package private) static int	PRM_SIZE Number of parameters per 10 ms frame.
(package private) static int	SERIAL_SIZE Bits per frame.
(package private) static float	SHARPMAX Maximum value of pitch sharpening
(package private) static float	SHARPMIN minimum value of pitch sharpening
(package private) static int	SIZ_RES2
(package private) static int	SIZ_TAB_HUP_L
(package private) static int	SIZ_TAB_HUP_S
(package private) static int	SIZ_Y_UP
(package private) static short	SIZE_WORD Size of bitstream frame.
(package private) static int	STEP Step betweem position of the same pulse.
(package private) static short	SYNC_WORD Definition of frame erasure flag.
(package private) static float	THRESCRIT threshold LT pst switch off
(package private) static float	THRESH_ERR Error threshold taming
(package private) static float	THRESH_H1
(package private) static float	THRESH_H2
(package private) static float	THRESH_L1
(package private) static float	THRESH_L2
(package private) static float	THRESHFCB
(package private) static float	THRESHPIT Threshold to favor smaller pitch lags
(package private) static int	UP_SAMP resolution of fractional delays

Constructor Summary

Ld8k()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

PI

static final float PI

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Constant Field Values

FLT_MAX_G729

static final float FLT_MAX_G729

Largest floating point number

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FLT_MIN_G729

static final float FLT_MIN_G729

Largest floating point number

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L_TOTAL

static final int L_TOTAL

Total size of speech buffer

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L_FRAME

static final int L_FRAME

LPC update frame size

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L_SUBFR

static final int L_SUBFR

Sub-frame size

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BIT_1

static final short BIT_1

Definition of one-bit in bit-stream.

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BIT_0

static final short BIT_0

Definition of zero-bit in bit-stream.

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SYNC_WORD

static final short SYNC_WORD

Definition of frame erasure flag.

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SIZE_WORD

static final short SIZE_WORD

Size of bitstream frame.

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PRM_SIZE

static final int PRM_SIZE

Number of parameters per 10 ms frame.

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SERIAL_SIZE

static final int SERIAL_SIZE

Bits per frame.

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L_WINDOW

static final int L_WINDOW

LPC analysis window size.

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L_NEXT

static final int L_NEXT

Samples of next frame needed for LPC ana.

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M

static final int M

LPC order.

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MP1

static final int MP1

LPC order+1.

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Constant Field Values

GRID_POINTS

static final int GRID_POINTS

Resolution of lsp search.

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Constant Field Values

MA_NP

static final int MA_NP

MA prediction order for LSP.

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MODE

static final int MODE

Number of modes for MA prediction.

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NC0_B

static final int NC0_B

Number of bits in first stage.

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NC0

static final int NC0

Number of entries in first stage.

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NC1_B

static final int NC1_B

Number of bits in second stage.

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NC1

static final int NC1

Number of entries in second stage.

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NC

static final int NC

LPC order / 2.

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L_LIMIT

static final float L_LIMIT

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M_LIMIT

static final float M_LIMIT

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GAP1

static final float GAP1

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GAP2

static final float GAP2

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GAP3

static final float GAP3

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PI04

static final float PI04

pi*0.04

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PI92

static final float PI92

pi*0.92

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CONST12

static final float CONST12

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THRESH_L1

static final float THRESH_L1

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THRESH_L2

static final float THRESH_L2

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THRESH_H1

static final float THRESH_H1

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THRESH_H2

static final float THRESH_H2

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GAMMA1_0

static final float GAMMA1_0

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GAMMA2_0_H

static final float GAMMA2_0_H

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GAMMA2_0_L

static final float GAMMA2_0_L

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GAMMA1_1

static final float GAMMA1_1

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GAMMA2_1

static final float GAMMA2_1

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ALPHA

static final float ALPHA

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BETA

static final float BETA

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PIT_MIN

static final int PIT_MIN

Minimum pitch lag in samples

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PIT_MAX

static final int PIT_MAX

Maximum pitch lag in samples

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L_INTERPOL

static final int L_INTERPOL

Length of filter for interpolation.

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L_INTER10

static final int L_INTER10

Length for pitch interpolation

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L_INTER4

static final int L_INTER4

upsampling ration for pitch search

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UP_SAMP

static final int UP_SAMP

resolution of fractional delays

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THRESHPIT

static final float THRESHPIT

Threshold to favor smaller pitch lags

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Constant Field Values

GAIN_PIT_MAX

static final float GAIN_PIT_MAX

maximum adaptive codebook gain

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FIR_SIZE_ANA

static final int FIR_SIZE_ANA

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FIR_SIZE_SYN

static final int FIR_SIZE_SYN

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DIM_RR

static final int DIM_RR

Size of correlation matrix

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NB_POS

static final int NB_POS

Number of positions for each pulse

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STEP

static final int STEP

Step betweem position of the same pulse.

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MSIZE

static final int MSIZE

Size of vectors for cross-correlation between 2 pulses

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SHARPMAX

static final float SHARPMAX

Maximum value of pitch sharpening

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SHARPMIN

static final float SHARPMIN

minimum value of pitch sharpening

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THRESHFCB

static final float THRESHFCB

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MAX_TIME

static final int MAX_TIME

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GPCLIP

static final float GPCLIP

Maximum pitch gain if taming is needed

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GPCLIP2

static final float GPCLIP2

Maximum pitch gain if taming is needed

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GP0999

static final float GP0999

Maximum pitch gain if taming is needed

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Constant Field Values

THRESH_ERR

static final float THRESH_ERR

Error threshold taming

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Constant Field Values

INV_L_SUBFR

static final float INV_L_SUBFR

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Constant Field Values

MEAN_ENER

static final float MEAN_ENER

Average innovation energy

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Constant Field Values

NCODE1_B

static final int NCODE1_B

Number of Codebook-bit

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NCODE2_B

static final int NCODE2_B

Number of Codebook-bit

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NCODE1

static final int NCODE1

Codebook 1 size

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NCODE2

static final int NCODE2

Codebook 2 size

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NCAN1

static final int NCAN1

Pre-selecting order for #1

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NCAN2

static final int NCAN2

Pre-selecting order for #2

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INV_COEF

static final float INV_COEF

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GAMMA1_PST

static final float GAMMA1_PST

denominator weighting factor

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GAMMA2_PST

static final float GAMMA2_PST

numerator weighting factor

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LONG_H_ST

static final int LONG_H_ST

impulse response length

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GAMMA3_PLUS

static final float GAMMA3_PLUS

tilt weighting factor when k1>0

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GAMMA3_MINUS

static final float GAMMA3_MINUS

tilt weighting factor when k1<0

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Constant Field Values

L_SUBFRP1

static final int L_SUBFRP1

Sub-frame size + 1

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Constant Field Values

F_UP_PST

static final int F_UP_PST

resolution for fractionnal delay

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LH2_S

static final int LH2_S

length of short interp. subfilters

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LH2_L

static final int LH2_L

length of long interp. subfilters

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THRESCRIT

static final float THRESCRIT

threshold LT pst switch off

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Constant Field Values

GAMMA_G

static final float GAMMA_G

LT weighting factor

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Constant Field Values

AGC_FAC

static final float AGC_FAC

gain adjustment factor

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AGC_FAC1

static final float AGC_FAC1

gain adjustment factor

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Constant Field Values

LH_UP_S

static final int LH_UP_S

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LH_UP_L

static final int LH_UP_L

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LH2_L_P1

static final int LH2_L_P1

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MIN_GPLT

static final float MIN_GPLT

LT gain minimum

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MEM_RES2

static final int MEM_RES2

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SIZ_RES2

static final int SIZ_RES2

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SIZ_Y_UP

static final int SIZ_Y_UP

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SIZ_TAB_HUP_L

static final int SIZ_TAB_HUP_L

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SIZ_TAB_HUP_S

static final int SIZ_TAB_HUP_S

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Constructor Detail

Ld8k

Ld8k()