| 引用本文： |
-
秦德兴,覃团发,陈琳.宽带语音编码算法及实现[J].广西科学院学报,2004,(4):213-216,219. [点击复制]
- Qin Dexing,Qin Tuanfa,Chen Lin.Algorithms and Their Implement on Wideband Speech Coding[J].Journal of Guangxi Academy of Sciences,2004,(4):213-216,219. [点击复制]
|
|
| 摘要: |
| 介绍基于G.722标准的嵌入式CELP/矢量和激励线性预测(VSELP)编解码、子带码激励线性预测(SB-CELP)、多带码激励线性预测(MB-CELP)、G.729、自适应变换编码(ATC)、变换码激励(TCX)以及变换预测编码(TPC)等算法,给出基于C语言和MATLAB语言的10.4 kbit/s和14.4 kbit/s两种不同比特率的宽带语音编码的实现方法。仿真结果表明,主观意见评分(MOS)可达3.1~3.6,语音质量达到预定要求。 |
| 关键词: 宽带语音编码 码激励线性预测 变换码激励 算法 |
| DOI： |
| 投稿时间：2004-08-28 |
| 基金项目:广西科学研究与技术开发计划(桂科攻0330010-1);广西"新世纪十百千人才工程"专项资金(2002222)联合资助项目。 |
|
| Algorithms and Their Implement on Wideband Speech Coding |
|
Qin Dexing, Qin Tuanfa, Chen Lin
|
| (Coll. of Comp. & Elec. Info., Guangxi Univ., Nanning, Guangxi, 530004, China) |
| Abstract: |
| Several algorithms about wideband speech coding are introduced.Base on G.722 standard,different methods of CELP are discussed in detail,such as embedded CELP/VSELP codec、SB-CELP、MB-CELP and the algorithm of G.729 standard.These algorithms can be used to conduct speech coding at very low bit rate.Based on SBC method,the implementation of wide speech coding by C and MATALAB simulation is obtained at the bit rates of 10.4kbit/s and 14.4kbit/s.The result of 3.1~3.6 was obtained in the hearing test. |
| Key words: wideband speech coding CELP TCX algorithm |
