IP和ATM网络中语音分组丢弃对解码语音质量的影响及对应的措施  

The influence of lost speech packets on the speech quality in IP and ATM networks and improvement measures

作　　者：杨震[1] 

机构地区：[1]南京邮电学院信号与信息处理研究所,江苏南京210003

出　　处：《通信学报》2003年第10期93-101,共9页Journal on Communications

基　　金：原邮电部科研基金资助项目(邮科98039);江苏省科技开发基金资助项目(00KJD510012)

摘　　要：基于分组传输的网络(如IP和ATM),进行实时语音通信时,存在分组可能丢失,因而影响通信质量的问题。本文提出两种新的方法,以减少或降低语音分组丢失带来的影响。实验结果表明,它们明显改善了语音通信质量。In packet-based networks such as IP and ATM networks, lost speech packets may greatly damage the speech quality. This paper presents two new methods for the purpose of reducing the influence of lost speech packets on the speech communication quality. Experiments prove that they evidently improve the speech communication QoS.

关 键 词：语音 IP/ATM 通信质量 分组丢失与补偿类号 

分 类 号：TP112.9[自动化与计算机技术—控制理论与控制工程] TN102.0[自动化与计算机技术—控制科学与工程]