Description: G.729 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for 24 and 40 kbit/s. G.726 also introduced a new 16 kbit/s rate. The four bit rates associated with G.726 are often referred to by the bit size of a sample, which are 2-bits, 3-bits, 4-bits, and 5-bits respectively. Platform: |
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Description: 英文版G.729语音压缩标准。
GENERAL ASPECTS OF DIGITAL TRANSMISSION
SYSTEMS
CODING OF SPEECH AT 8 kbit/s
USING CONJUGATE-STRUCTURE
ALGEBRAIC-CODE-EXCITED
LINEAR-PREDICTION (CS-ACELP) Platform: |
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Author:guxiao |
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Description: 本程序的压缩编码是G.729的编解码程序，其的算法是基于CS-ACELP的算法基础上的编码。用在语音通信中，例如手机中-This program s arithmetic is base on ITU G.729 Speech Vocoder, which is a CS-ACELP compressing coder, usually use in speech comunication, such as mobile phone. Platform: |
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Author:朱敏 |
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Description: 本程序的压缩编码是G.723的编解码程序，其的算法是基于ACELP的算法基础上的编码。用在语音通信中，例如手机中-the procedure coding is the G.723 codec procedure, the algorithm is based on ACELP algorithm based on the coding. Used in voice communications, such as mobile phones Platform: |
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Author:朱敏 |
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Description: 8kbitsCS_ACELPSPELP语音编码算法的研究与实现的硕士论文-8kbitsCS_ACELPSPELP speech coding algorithm Research and Implementation of the master's thesis Platform: |
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Author:许风 |
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Description: TETRA系统中使用的ACELP编码程序，通过VS2008编译并仿真成功，可以听ACELP解压后的语音。4.567kbps-TETRA system used in the ACELP coding process through the VS2008 compile and simulation successfully, you can listen to the voice ACELP after decompression. 4.567kbps Platform: |
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Author:pwmmwq |
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Description: 本程序的压缩编码是G.729的编解码程序，其的算法是基于CS-ACELP的算法基础上的编码-The process of compression encoding is G.729 codec process, its algorithm is based on the CS-ACELP coding algorithm based on Platform: |
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Author:张同学 |
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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. Platform: |
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Description: 这个包实现了ITU - T的G.723.1语音编码器和解码器在Matlab。该方案的目标是提供一个良好的记录和模块化设计方案，实验和研究，以方便使用为基础的实际编码器。
编码器实现了G.723.1的多脉冲模式（在6.3 kb / s的运行）。解码器可以解码的5.3 kb / s的，在6.3 kb的多脉冲/秒，连续传输，数据包丢失隐藏）编码器（所有的ACELP方式。
该编码器和解码器之间的标准接口是位文件（同位文件由ITU - T参考代码产生兼容）。第二个选项之间传递的编码器和解码器使用Matlab的数据信息文件。此选项允许测试通过传递量化或unquantized之间的编码器和解码器的信息。
有报道[1]描述了G.723.1编码与Matlab实现与分布包括在内。 ITU - T建议G.723.1的[2]在线提供。该建议含-This package implements the ITU-T G.723.1 speech coder and decoder in Matlab. The goal of the package is to provide a well-documented and modular program that was designed to facilitate experimentation and research using a practical coder as a base.
The coder implements the multipulse mode of G.723.1 (running at 6.3 kb/s). The decoder can decode all modes of the coder (ACELP at 5.3 kb/s, multipulse at 6.3 kb/s, discontinuous-transmission, packet loss concealment).
The standard interface between the coder and decoder is a bit file (compatible with the bit files generated by the ITU-T reference code). A second option passes information between the coder and decoder using a Matlab data file. This option allows for testing by passing quantized or unquantized information between the coder and the decoder.
A report [1] describing the G.723.1 and the Matlab implementation is included with the distribution. ITU-T Recommendation G.723.1 [2] is available on-line. The recommendation incl Platform: |
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