A study of VoIP quality evaluation: User perception of voice quality from G.729, G.711 and G.722

Author

Daengsi, Therdpong ; Wutiwiwatchai, Chai ; Preechayasomboon, Apiruck ; Sukparungsee, Saowanit

Author_Institution

Fac. of Inf. Technol., King Mongkut´´s Univ. of Technol. North Bangkok, Bangkok, Thailand

fYear

2012

Firstpage

342

Lastpage

345

Abstract

This paper presents new evidence about user perception of VoIP quality that is inconsistent with the general understanding of three codecs know as G.729, G.711 and G.722. The focus of the study is aimed at VoIP quality evaluation by Thai users that use the Thai language which is tonal. This study was conducted by using conversation-opinion tests. The results, called MOS-CQS, were then analyzed carefully. After the study and analysis, it has been found that the perception of subjects, who were Thai native speakers, to G.729, G.711 and G.722 is not significantly different.

Keywords

Internet telephony; speech codecs; G.711 codec; G.722 codec; G.729 codec; MOS-CQS; Thai language; Thai user; VoIP quality evaluation; conversation-opinion testing; user perception; voice quality; Atmospheric measurements; Codecs; Particle measurements; Quality of service; G.711; G.722; G.729; VoIP quality evaluation/measurement/assessment; conversation-opinion tests; subjective tests;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Communications and Networking Conference (CCNC), 2012 IEEE

Conference_Location

Las Vegas, NV

Print_ISBN

978-1-4577-2070-3

Type

conf

DOI

10.1109/CCNC.2012.6181114

Filename

6181114