Development of a MOS estimation model for G.729 using listening-opinion tests with Thai speech referring to packet loss effects

Author

Wuttidittachotti, Pongpisit ; Khaoduang, Phisit ; Daengsi, Therdpong

Author_Institution

Dept. of Inf. Technol., KMUTNB, Bangkok, Thailand

fYear

2014

fDate

7-8 April 2014

Firstpage

29

Lastpage

32

Abstract

This paper presents a proposed mathematical model of VoIP quality estimation from G.729. This model is based on native Thai users. The subjective Mean Opinion Score (MOS) were obtained from listening-opinion tests with a total of 102 subjects that covered five conditions of packet loss effects (0%, 3%, 5%, 10% and 20%). The model was then created using a simple function in Microsoft Excel, before evaluating with the test set data obtained from four test conditions (0%, 4%, 8% and 12%) with 30 subjects. From the evaluated result, it has been found that the Mean Absolute Percent Error (MAPE) of the model is 16.29%. That means this model is accepted as a good model for MOS estimation from G.729 for Thai users, referring to packet loss effects (0-10% =excellent, whereas about 10-20% = good).

Keywords

Internet telephony; speech synthesis; G.729; MAPE; MOS estimation model; Microsoft Excel; Thai speech; VoIP quality estimation; listening-opinion tests; mathematical model; mean absolute percent error; native Thai users; packet loss effects; subjective mean opinion score; Data models; Equations; Estimation; Mathematical model; Packet loss; Speech; ACR; G.729; VoIP; packet loss; subjective MOS;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Applications and Industrial Electronics (ISCAIE), 2014 IEEE Symposium on

Conference_Location

Penang

Print_ISBN

978-1-4799-4352-4

Type

conf

DOI

10.1109/ISCAIE.2014.7010204

Filename

7010204