摘要
语音压缩是现代多媒体通信中实现低速率语音通信的关键技术。1996年,ITU-T公布了G.729标准。它采用了共轭结构代数码本激励线性预测(CS-ACELP)算法,其编码速率为8kbit/s,延时为15ms,具有良好的合成语音质量和适中的复杂度等优点。在个人移动通信、多媒体通信、IP电话、卫星通信及未来的综合业务数字通信(ISDN)等领域具有广泛的应用前景。本文综述了ITU-TG.729协议在DSP上实现的代码优化方法。
Speech compression is the key technology to realize the low speed speech communication. In 1996, ITU -T issued the G. 729 Recommendation. It is used for coding at 8kb/s speed by Conjugate - Structure Algebraic - Coder - Excited Linear - Prediction （CS -ACELP）algorithm, which has a 15ms delay. It has nicer synthesized speech quality and appropriate complexity. It can be widely used in the field of individual mobile communication, multimedia communication, I Pphone, satellite communication, ISDN and so on. The author introduces the optimal implementation methods of G. 729 on DSP.
出处
《微计算机应用》
2009年第5期36-40,共5页
Microcomputer Applications
基金
黑龙江省研究生创新科研资金项目(项目编号:YJSCX2008-035HLJ)
