全速率语音编码系统  

Full-Speed Speech Coding System

作　　者：董平[1] 吴杰[1] 

机构地区：[1]杭州电子工业学院通信分院,浙江杭州310037

出　　处：《杭州电子工业学院学报》2003年第4期40-43,共4页Journal of Hangzhou Institute of Electronic Engineering

摘　　要：随着通信网络用户数量的增加、网络业务综合化、多样化,网络带宽与系统容量、服务质量的矛盾日益突出,传统的64kbit/s的PCM语音压缩编码已不能满足不断变得拥挤的传输信道要求。在这种情况下,语音压缩编码技术得到飞速发展,相继出现了多种语音压缩编码的国际标准,可以用于通信、网络、多媒体等广泛领域。针对全速率语音编码系统的原理和算法进行了详细的介绍,对全速率语音编码系统进行了仿真,并对仿真结果进行了分析。With the increasing of network users , the integrating and diversifying of network service, the contradictions among bandwidth system capacity and service quality are more and more obvious, traditional 64kbitls PCM speech coding can not satisfy the requirement of transmit bandwidth which is becoming more and more congested. Under this condition, speech coding technology develops fast. Many international standards come out one by one. They are widely used in telecommunication, net, multimedia and so on. In this paper we gave the detailed introduction of the full speed speech coding system's principle and arithmetic , emulated model of the system and analyzed the results of emulation.

关 键 词：全速率 语音编码 线性预测 预处理 LPC分析 短时分析滤波 长时预测 规则脉冲激励序列编码 

分 类 号：TN912.32[电子电信—通信与信息系统]