| 基于TMS320VC5421的多制式语音编码的实现 |
| |
| 引用本文： | 陈立伟,杨洪利,孙玲.基于TMS320VC5421的多制式语音编码的实现[J].应用科技,2005,32(11):1-3. |
| |
| 作者姓名： | 陈立伟 杨洪利 孙玲 |
| |
| 作者单位： | 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001 |
| |
| 摘 要： | 介绍了一种多制式语音编解码器,完成4路语音的全双工通信.简单介绍了组成系统的核心器件——DSP芯片TMS320VC5421的硬件特点,提出实现G.729、CVSD、ADPCM算法之间的编码转换方法,并给出了算法的软硬件实现.实验结果表明,该方法以较少的运算量及较少的硬件资源获得了较高的语音编码质量,是一种灵活可行的语音编码方式.
|
| 关 键 词： | 多制式语音编解码 TMS320VC5421 G.729 CVSD ADPCM |
| 文章编号： | 1009-671X（2005）11-0001-03 |
| 收稿时间： | 2004-08-09 |
| 修稿时间： | 2004年8月9日 |
Realization of TMS320VC5421-based multi-mode speech coding |
| |
| CHEN Li-wei,YANG Hong-li,SUN Ling.Realization of TMS320VC5421-based multi-mode speech coding[J].Applied Science and Technology,2005,32(11):1-3. |
| |
| Authors: | CHEN Li-wei YANG Hong-li SUN Ling |
| |
| Abstract: | A multi-mode speech coding and decoding circuit is presented for realizing the 4 channel full duplex speech communication. The hardware features of DSP chip TMS320VC5421 are proposed, which is the core component of this system. The coding transformation between G. 729, CVSD and ADPCM algorithms is demonstrated and the realization of the software and hardware is given. Experimental results show that this algorithm can obtain high quality speech coding with lesser operation and hardware resource. |
| |
| Keywords: | multi-mode speech coding and decoding TMS320VC5421 G 729 CVSD ADPCM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
