g729p
所属分类:嵌入式/单片机/硬件编程
开发工具:C/C++
文件大小:116KB
下载次数:98
上传日期:2004-12-09 14:33:45
上 传 者:
zhtuan
说明: 语音压缩编码中的g729p编码程序
(Speech vocoder program comply to ITU G729 annex P)
文件列表:
acelp_cp.c (71951, 1999-10-12)
bitscp.c (11518, 1999-10-12)
bitstrea.txt (8664, 1999-10-12)
bwfw.c (11641, 1999-10-12)
bwfwfunc.c (6731, 1999-10-12)
calcexc.c (7442, 1999-10-12)
codercp.c (8705, 1999-10-12)
codercp.mak (3664, 1999-10-12)
codld8cp.c (32549, 1999-10-15)
cor_func.c (2512, 1999-10-12)
dacelpcp.c (5483, 1999-10-12)
declagcp.c (3000, 1999-10-12)
decld8cp.c (22387, 1999-10-12)
decodcp.c (9299, 1999-11-01)
decodcp.mak (3038, 1999-10-12)
dec_sid.c (5267, 1999-10-12)
degaincp.c (5904, 1999-10-12)
dtx.c (10134, 1999-10-12)
dtx.h (4184, 1999-10-12)
filtere.c (3342, 1999-10-12)
gainpred.c (4257, 1999-10-12)
ld8cp.h (22098, 1999-10-12)
ld8k.h (16238, 1999-10-12)
lpccp.c (10563, 1999-10-12)
lpfunccp.c (5201, 1999-10-12)
lspdece.c (3683, 1999-10-12)
lspgetqe.c (6391, 1999-10-12)
mus_dtct.c (4876, 1999-10-12)
octet.h (707, 1999-10-12)
phdisp.c (4149, 1999-10-12)
pitchcp.c (16881, 1999-10-12)
post_pro.c (2730, 1999-10-12)
pred_lt3.c (2337, 1999-10-12)
pre_proc.c (3068, 1999-10-12)
pstcp.c (24537, 1999-10-12)
pwf.c (4041, 1999-10-12)
pwfe.c (1385, 1999-10-12)
p_parity.c (1887, 1999-10-12)
qsidgain.c (2837, 1999-10-12)
qsidlsf.c (10293, 1999-10-12)
... ...
1 - TITLE
---------
/*
ITU-T G.729 Annex C+ - Reference C code for floating point
implementation of G.729 at ***/8/11.8 kbit/s with DTX functionality
(integration of Annexes B, D and E)
Version 2.1 of October 1999
*/
2 - VERSION
-----------
This is version 2.1
ITU-T G.729/Annex C+ was approved on 02/2000
3 - COPYRIGHT AND INTELLECTUAL PROPERTY
---------------------------------------
This software package is provided as part of ITU-T Recommendation G.729 Annex C+.
ITU-T G.729 Annex C+ floating point ANSI C source code
Copyright (C) 1999, AT&T, France Telecom, NTT, University of
Sherbrooke, Conexant, Ericsson. All rights reserved.
Original Copyright (c) 1995, AT&T, France Telecom, NTT,
Universite de Sherbrooke.
All rights reserved.
+
Copyright (c) 1996, AT&T, France Telecom, NTT, Rockwell International,
Universite de Sherbrooke.
All rights reserved.
+
Copyright (c) 1997, Ericsson, NTT.
All rights reserved.
+
Copyright (c) 1997, France Telecom, Universite de Sherbrooke.
All rights reserved.
The copy of the source C code, version 2.1, is given under Copyright of the
authors, only for the purpose of establishing the specification of a codec.
All rights are reserved. All other use of the material is prohibited.
4 - SUPPORT
------------
For distribution of update software, please contact:
Sales Department
ITU
Place des Nations
CH-1211 Geneve 20
SWITZERLAND
email: sales@itu.int
For reporting problems, please contact TSB helpdesk service at:
TSB Helpdesk service
ITU
Place des Nations
CH-1211 Geneve 20
SWITZERLAND
fax: +41 22 730 5853
email: tsbedh@itu.int
5 - TECHNICAL DETAILS
---------------------
5.1 - COMPILATION
-----------------
Edit the file typedef.h to comply to your target platform
For UNIX systems the following makefiles are provided
codercp.mak
decodcp.mak
Edit the makefiles codercp.mak and decodcp.mak to set the proper options
for your system.
The command to compile and link all code on a UNIX system is
make -f codercp.mak
make -f decodcp.mak
For other platforms, the *.mak files can be used to work out the
compilation procedures.
This code has been successfully compiled and run on the following
platforms:
Platform Operating System Compiler
-----------------------------------------------------------------------------
DEC ALPHA OSF/1 DEC OSF/1 cc
PC DOS 6.21 Borland 3.1
Watcom 9.6
Microsoft 8
PC Window95 MS Visual C++ 5.0
PC WindowNT4 MS Visual C++ 6.0
HP-UX B.10.01 gcc
SGI-IRIX IRIX 5.3 SGI Rel 5.3 cc
5.2 - DESCRIPTION
-----------------
This package includes the files needed to build the floating point version
of the global G.729 codec aty 8 kbit/s (annex C) with lower and higher bit
rate extensions at *** kbit/s and 11.8 kbit/s and with dtx functionality
5.3 - USAGE
-----------
codercp inputfile bitstreamfile dtx_option rate_option
decodcp bitstreamfile outputfile
The following files are used or generated
inputfile 8 kHz sampled data file 16 bit PCM (binary)
outputfile 8 kHz sampled data file 16 bit PCM (binary)
bitstreamfile binary file containing bitstream
The following parameters are used for the encoder
dtx_option = 0 dtx disabled (default)
= 1 dtx enabled
rate_option = 0 : lower rate (*** kb/s)
= 1 : G729 (8.0 kb/s)
= 2 : higher rate (11.8 kb/s)
= file_rate_name : a binary file of 16 bit word containing
either 0, 1 or 2 to select the rate on a frame by frame basis
the default is 1 (8 kb/s)
5.4 - BITSTREAM FORMAT
----------------------
The bitstream file contains for each 10 ms speech frame,
For rate 8 kbit/s, 82 16-bit words or for rate *** kbit/s, 66 16-bit words,
or for rate 11.8 kbit/s, 120 16-bit words, or for SID frame, 17(or 18) 16-bit words,
or for not transmitted frame, 2 16-bit words.
The first word is the synchronization word SYNC_WORD.
The second word contains the value serial_size which is 80 for rate 8 kbit/s,
*** for rate *** kbit/s, 118 for rate 11.8 kbit/s, 15( or 16) for SID frame,
0 for Non-transmitted frame
For the rate 8 kbit/s, the next 80 words contain the parameters as described
in G729 recommendation text. For the other rates, the next "serial_size"
words are described in bitstrea.txt.
Bitstream information - all parameters start with msb
The bits are defined as follows:
#define SYNC_WORD (short)0x6b21
#define BIT_0 (short)0x007f /* definition of zero-bit in bit-stream */
#define BIT_1 (short)0x0081 /* definition of one-bit in bit-stream */
A bad frame is indicated by setting all "serial_size" bits to zero.
Except, for not transmitted frame, where the synchronization word SYNC_WORD is
set to (short)0x6b20.
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