gsm-1[1].0.6
所属分类：单片机开发
开发工具：C++
文件大小：81KB
下载次数：11
上传日期：2011-02-14 02:08:48
上 传 者：
hao.qing
说明： GSM 06.10 RELP声码器 C 语言的实现
(GSM 06.10 RELP vocoder C language implementation)
文件列表:
gsm-1[1].0.6 (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6 (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\add-test (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\add-test\add_test.c (7010, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\add-test\add_test.dta (11520, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\bin (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\ChangeLog (2113, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\COPYRIGHT (690, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\inc (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\inc\config.h (1248, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\inc\gsm.h (1607, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\inc\private.h (7459, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\inc\proto.h (1606, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\inc\toast.h (2094, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\inc\unproto.h (471, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\INSTALL (2547, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\lib (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\MACHINES (440, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\Makefile (10533, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\man (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\man\bitter.1 (1765, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\man\gsm.3 (2817, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\man\gsm_explode.3 (1239, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\man\gsm_option.3 (2376, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\man\gsm_print.3 (1547, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\man\toast.1 (3524, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\MANIFEST (1193, 1992-10-29)
gsm-1[1].0.6\gsm-1.0-pl6\src (0, 2011-02-14)
gsm-1[1].0.6\gsm-1.0-pl6\src\add.c (5549, 1994-12-31)
gsm-1[1].0.6\gsm-1.0-pl6\src\code.c (2554, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\src\debug.c (1543, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\src\decode.c (1569, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_create.c (964, 1994-05-11)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_decode.c (3559, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_destroy.c (568, 1994-11-30)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_encode.c (4846, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_explode.c (4246, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_implode.c (5762, 1992-10-28)
gsm-1[1].0.6\gsm-1.0-pl6\src\gsm_option.c (749, 1992-10-28)
... ...
/*
* Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
* Universitaet Berlin. See the accompanying file "COPYRIGHT" for
* details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
*/
GSM 06.10 13 kbit/s RPE/LTP speech compression available
--------------------------------------------------------
The Communications and Operating Systems Research Group (KBS) at the
Technische Universitaet Berlin is currently working on a set of
UNIX-based tools for computer-mediated telecooperation that will be
made freely available.
As part of this effort we are publishing an implementation of the
European GSM 06.10 provisional standard for full-rate speech
transcoding, prI-ETS 300 036, which uses RPE/LTP (residual pulse
excitation/long term prediction) coding at 13 kbit/s.
GSM 06.10 compresses frames of 160 13-bit samples (8 kHz sampling
rate, i.e. a frame rate of 50 Hz) into 260 bits; for compatibility
with typical UNIX applications, our implementation turns frames of 160
16-bit linear samples into 33-byte frames (1650 Bytes/s).
The quality of the algorithm is good enough for reliable speaker
recognition; even music often survives transcoding in recognizable
form (given the bandwidth limitations of 8 kHz sampling rate).
The interfaces offered are a front end modelled after compress(1), and
a library API. Compression and decompression run faster than realtime
on most SPARCstations. The implementation has been verified against the
ETSI standard test patterns.
Jutta Degener (jutta@cs.tu-berlin.de)
Carsten Bormann (cabo@cs.tu-berlin.de)
Communications and Operating Systems Research Group, TU Berlin
Fax: +49.30.31425156, Phone: +49.30.31424315
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