Speech quality measurement methods with applying PLC algorithms on real-time transmission control scheme for VoIP service

被引：0

作者：

Kim, Jinsul ^{[1
]}

Lee, Hyun-Woo ^{[2
]}

Ryu, Won ^{[2
]}

Lee, Byung Sun ^{[2
]}

Han, Seung Ho ^{[3
]}

Hahn, Minsoo ^{[3
]}

机构：

[1] Digital Media Laboratory, Information and Communications University, Seoul

[2] BcN Service Research Group, Broadband convergence Network Research Division, Electronics and Telecommunications Research Institute, Daejeon

[3] Speech and Audio Information Laboratory, Information and Communications University, Daejeon

来源：

Journal of Multimedia | 2006年 / 1卷 / 06期

关键词：

BcN services; E-model; PESQ; PLC; QoS; RTCP-XR; SIP; Speech quality; VoIP;

D O I：

10.4304/jmm.1.6.46-53

中图分类号：

学科分类号：

摘要：

According to the discovery of available and suitable audiovisual services over IP, researches on the Quality of Service (QoS) for various multimedia application services are required. This paper presents evaluation of speech quality applying improved Packet Loss Concealment (PLC) algorithms with an end-to-end bidirectional transmission control scheme. We propose real-time transmission control scheme to perform better quality monitoring of VoIP service. In order to evaluate the newly proposed RTCP-XR scheme for VoIP services, we measure in real-time the quality degree of the received speech signal while applying our improved Packet Loss Concealment (PLC) algorithms in G.711 and G.729A codecs using an implemented Session Initiation Protocol (SIP) based SoftPhone and a 1-port gateway systems. Overall, for the evaluation with scientific exactitude of speech quality applied our PLC algorithms we examine with made phone-calls through the heterogeneous network systems. The experimental results confirm the applied PLC algorithms for improvement of speech quality over IP in real environments with the QoS-factor transmission control mechanism. © 2006 ACADEMY PUBLISHER.

引用

页码：46 / 53

页数：7

共 15 条

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