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Description: VIS H.323 Library符合下列标准
ITU-T H.323 V3
音频codec（支持静音检测）
g.723.1 6.4kbps发送，6.4/5.3kbps接收
g.729a 8kbps发送，8kbps接收（仅在单一模式下可用）
gsm 6.10 10kbps
lpc 10 3kbps
g.711 uLaw/aLaw 64kbps
视频codec（动态流量控制）
h.261 支持QCIF(176*144)/CIF(352*288)
h.263 支持QCIF(176*144)/CIF(352*288) -- 需要VISh263m.dll的支持，该动态连接库随VIS H.323 DLL Library一同发布
标准H.323网守(Gatekeeper)支持
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Size: 1053590 |
Author: csztan |
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Description: 这是LPC-10压缩算法的源代码,愿共享之.也希望能赐与MELP方面的算法源码.-This is the LPC-10 compression algorithm source code, and is willing to Sharing. I hope to bestow MELP the algorithm source code.
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Size: 797696 |
Author: 李文化 |
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Description: gsm6.10标准的编解码例子，主要包括高层函数，编解码，数学运算。希望能给大家一个参考，需要winddk。-gsm6.10 standard codecs examples, mainly including senior function, encoding and decoding, arithmetic. We wanted to give a reference to the need winddk.
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Size: 52224 |
Author: zlx63 |
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Description: 实现GB2312到UCS2/unicode的相互转换，主要用于嵌入式的GSM PDU编解码。我已经实现了编解码的函数。如果你只想实现GB2312到UCS2/unicode的相互转换，也可以根据我里面函数进行修改-GB2312 to UCS2/unicode achieve mutual conversion, mainly used in embedded codec GSM PDU. I have a codec implementation of the function. If you just want to achieve GB2312 to UCS2/unicode mutual conversion, but also can modify my function inside
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Size: 47104 |
Author: liuwei |
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Description: Simple IP telephony program ussing OSS linux audio system and GSM speech codec
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Size: 70656 |
Author: frantamalta |
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Description: ITU-T G.722.2
国际电信联盟G.722.2建议书，2003年7月版。该建议书是语音通讯领域的压缩标准，被GSM，WCDMA，3GPP等采用，题目为16kbit下的宽带语音编码，使用自适应多率宽带编码。
内容主要有代数码激励线性预测编码(ACELP)，话音活动检测(VAD)等。-This Recommendation describes the high quality Adaptive Multi-Rate Wideband (AMR-WB)
encoder and decoder that is primarily intended for 7 kHz bandwidth speech signals. AMR-WB
operates at a multitude of bit rates ranging from 6.6 kbit/s to 23.85 kbit/s. The bit rate may be
changed at any 20-ms frame boundary.
Annex C includes an integrated C source code software package which contains the implementation
of the G.722.2 encoder and decoder and its Annexes A and B and Appendix I. A set of digital test
vectors for developers is provided in Annex D. These test vectors are a verification tool providing an
indication of success in implementing this codec.
G.722.2 AMR-WB is the same codec as the 3GPP AMR-WB. The corresponding 3GPP
specifications are TS 26.190 for the speech codec and TS 26.194 for the Voice Activity Detector.
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Size: 728064 |
Author: 刘涛 |
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Description: WB-AMR VMR-WB 是新型可变速率多模式宽带语音编解码器，专为无线 CDMA 2000标准而设计，目的在于在 50 至 7000 HZ 的频带上进行语音编码，采样率为 16 KHZ。VMR-WB 基于 3GPP AMR-WB (G722.2) 编解码器，在每秒速率12.65 Kbit 上可实现互操作。 VMR-WB 工作模式有四种，具体选择哪种应视网络的流量情况而定。前三种模式专门针对 CDMA 系统，而第四种模式为 AMR-WB 互操作性模式。 VMR-WB 与 AMR-WB 的互操作性允许 GSM/WCDMA 与 CDMA2000 系统无须进行自动解码即可通信，这就不至于增加额外的延迟以及引起语音质量下降-WB-AMR VMR-WB is a new variable-rate multimode wideband speech codec designed for wireless CDMA 2000 standard design, aimed at 50 to 7000 HZ frequency band for voice coding, sampling rate of 16 KHZ. VMR-WB based on the 3GPP AMR-WB (G722.2) codec rate of 12.65 Kbit per second can be interoperable. VMR-WB mode four, the specific choice of which network traffic should be as the case may be. The first three models specifically for the CDMA system, while the fourth mode of AMR-WB interoperable mode. VMR-WB and AMR-WB allows the interoperability of GSM/WCDMA and CDMA2000 systems can not automatically decode the communication, which without increasing the delay and the additional decline in voice quality caused by
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Size: 189440 |
Author: 观光客 |
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Description: 2.4 kbps MELP Proposed Federal Standard speech coder
Fixed-point C code, version 1.0
The fixed-point version of the voice codec Mixed Excitation Linear
Prediction (MELP) is based on specifications on the C-language software
simulation contained in GSM 06.06 This standard is available from the ETSI publication office
Department of Defense to use the C-language software simulation contained
in GSM 06.06 for the purposes of the development of a fixed-point
version of the voice codec Mixed Excitation Linear Prediction (MELP).
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Size: 1089536 |
Author: tkelin |
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Description: GSM手机短信编解码器。可以根据发送手机号接收手机号以及短信的内容自动编码成手机PDU串，也可根据接收到的PDU串解码出短信内容-GSM SMS codec. Can send a phone number and phone number to receive text message content is automatically encoded into the phone PDU string, but also according to the received PDU string decoding the message content
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Size: 217088 |
Author: orchard |
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Description: Its 3GPP document for the speech codec used in the GSM communication
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Size: 4792320 |
Author: Atif |
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Description: 实现GB2312到UCS2/unicode的相互转换，主要用于嵌入式的GSM PDU编解码。我已经实现了编解码的的函数。如果你只想实现GB2312到UCS2/unicode的相互转换，也可以根据我里面函数进行修改 已通过测试。
-Achieve the mutual conversion GB2312 to UCS2/unicode, mainly for embedded GSM PDU codec. I' ve implemented a codec function. If you just want to to achieve GB2312 to UCS2/unicode, conversion, and can also be modified according to the function of me has passed the test.
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Size: 47104 |
Author: sane |
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Description: 这是GSM增强型全速率语音编解码的C语言源代码，很不错的。-This is the GSM Enhanced Full Rate Codec C language source code, very good.
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Size: 282624 |
Author: hxl |
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Description: 一个好用及快速的 GSM 语音 codec 源码,并提供用 BCB 编译包装好的 windows DLL 档连结叫用-An easy to use and fast GSM voice codec source code, and provides invoked using the BCB compiler wrapped windows the DLL file link
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Size: 43008 |
Author: 章竣尧 |
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Description: 音频编解码测试序列，编码包括：aac,ac3,g711A,G711U,amr,g721,g723,g726,g729,gsm,imaadpcm,mp2,mp3,msadpcm,ogg,pcm,wma-audio codec file：aac,ac3,g711A,G711U,amr,g721,g723,g726,g729,gsm,imaadpcm,mp2,mp3,msadpcm,ogg,pcm,wma
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Size: 847872 |
Author: 株株 |
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Description: GSM 06.53_增强全速率话音处理C代码
GSM 06.54_增强全速率测试序列
GSM技术规范目录_GSM 06系列_话音编码规范.pdf-ETSI EN 300 724 V8.0.1 (2000-11)
Digital cellular telecommunications system (Phase 2+) (GSM)
ANSI-C code for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.53 version 8.0.1 Release 1999)
en_300724v080001p.pdf（官方文档）
en_300724v080001p0.zip（官方源代码）
ETSI EN 300 725 V8.0.1 (2000-11)
Digital cellular telecommunications system (Phase 2+) (GSM)
Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (GSM 06.54 version 8.0.1 Release 1999)
en_300725v080001p.pdf（官方文档）
en_300725v080001p0.zip（官方源代码）
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Size: 10416128 |
Author: lcd |
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Description: C代码实现的AMR语音编解码。AMR多速率编解码技术相比原有的GSM语音编码器采用固定的编码速率，AMR语音编码器则可根据无线信道和传输状况来自适应地选择一种最佳信道模式（全速率或半速率）和信源编码模式（以比特率来区分）进行编码传输。-C code to achieve AMR voice codec. AMR multi rate coding and decoding technology of GSM speech coder is compared to the original fixed code rate, AMR speech coder can be based on the wireless channel and the transmission state to adaptively an optimal channel mode (full rate or half rate) and source coding mode (to distinguish between the transmission with a bit rate).
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Size: 199680 |
Author: |
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Description: 考虑雨衰 阴影 和多径影响，各种资源分配算法实现，GSM中GMSK调制信号的产生，用MATLAB实现动态聚类或迭代自组织数据分析，LDPC码的完整的编译码。- Consider shadow rain attenuation and multipath effects Various resource allocation algorithm, GSM is GMSK modulation signal generation, Using MATLAB dynamic clustering or iterative self-organizing data analysis, Complete codec LDPC code.
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Size: 5120 |
Author: wsxwcxvyr |
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Description: 能量熵的计算，LDPC码的完整的编译码，GSM中GMSK调制信号的产生，通过虚拟阵元进行DOA估计，基于chebyshev的水声信号分析，matlab程序运行时导入数据文件作为输入参数。-Energy entropy calculation, Complete codec LDPC code, GSM is GMSK modulation signal generation, Conducted through virtual array DOA estimation, Based chebyshev underwater acoustic signal analysis, Import data files as input parameters matlab program is running.
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Size: 7168 |
Author: irxipyn |
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Description: GSM中GMSK调制信号的产生，可以动态调节运行环境的参数，对于初学matlab的同学会有帮助，数据模型归一化，模态振动，LDPC码的完整的编译码，基于chebyshev的水声信号分析，滤波求和方式实现宽带波束形成。- GSM is GMSK modulation signal generation, Can dynamically adjust the parameters of the operating environment, Matlab for beginner students will help, Normalized data model, modal vibration, Complete codec LDPC code, Based chebyshev underwater acoustic signal analysis, Filtering summation way broadband beamforming.
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Size: 10240 |
Author: nqvixrad |
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Description: ldpc码的编解码实现，GSM中GMSK调制信号的产生，从先验概率中采样，计算权重。- Codec ldpc code implementation GSM is GMSK modulation signal generation, Sampling a priori probability, calculate the weight.
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Size: 7168 |
Author: nunfou |
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