| 针对无线语音通信的G.729算法的改进及DSP实现 |
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| 引用本文： | 熊堃,陈向东,葛林,石念. 针对无线语音通信的G.729算法的改进及DSP实现[J]. 通信技术, 2010, 43(6): 219-220,223 |
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| 作者姓名： | 熊堃 陈向东 葛林 石念 |
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| 作者单位： | 西南交通大学信息科学与技术学院,四川成都,610031 |
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| 基金项目： | 教育部新世纪优秀人才支持计划支持项目 |
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| 摘 要： | 无线语音通信系统中,由于开放空间的信道衰落特性,使得语音信号在空间传输中受到较大的干扰。针对这一特点,提出了一种基于G.729协议的优化算法。该优化算法粗化了码本搜索,并通过定点溢出保护的去除和宏定义的使用改进了程序运行效率,和原算法相比有较低的计算复杂度和处理延时,利于无线语音的传输。通过DSP硬件仿真实验和人耳听觉辨别表明,在计算复杂度大幅下降的情况下,合成话音质量仍能达到令人满意的效果。
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| 关 键 词： | 语音编码 G.729语音编码 无线语音通信系统 |
Improvement and DSP Implementation of G.729 Algorithm for Wireless Voice Communication |
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| XIONG Kun,CHEN Xiang-dong,GE Lin,SHI Nian. Improvement and DSP Implementation of G.729 Algorithm for Wireless Voice Communication[J]. Communications Technology, 2010, 43(6): 219-220,223 |
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| Authors: | XIONG Kun CHEN Xiang-dong GE Lin SHI Nian |
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| Affiliation: | XIONG Kun,CHEN Xiang-dong,GE Lin,SHI Nian(School of Information Science & Technology,Southwest Jiaotong University,Chengdu Sichuan 610031,China) |
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| Abstract: | In wireless voice communication systems,for the fading characteristics in the open area,the transmission of voice signals in the space receives much disturbance.Aiming at the characteristics of wireless voice communication system,an improved algorithm based on G.729 voice coding is proposed in this paper.This algorithm simplifies the codebook searching and improves the efficiency of the program.As compared with the original algorithm,this algrithm is low in computational complexity and processing delay,thus... |
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| Keywords: | voice coding G.729 voice code wireless voice communication system |
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