Assessment of effects of packet loss on speech quality in VoIP

Author

Ding, Lijing ; Goubran, Rafik A.

Author_Institution

Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada

fYear

2003

fDate

20-21 Sept. 2003

Firstpage

49

Lastpage

54

Abstract

This paper investigates the effects of packet loss on speech quality in Voice over Internet Protocol (VoIP) applications by using ITU-T G.107, the E-model, whose parameters currently only cover limited VoIP scenarios. Several packet loss rates, packet sizes and error concealment techniques for codec G.729 are examined. Mean Opinion Score (MOS) is used as an index for speech quality and is measured by Perceptual Evaluation of Speech Quality (PESQ) algorithm. These effects on speech quality are assessed in the equipment impairment factor domain and then formulated into the E-model. The validation test shows good accuracy of the proposed formula, the prediction errors range between ∓0.10 MOS for most cases with an absolute maximum of 0.14 MOS.

Keywords

Internet telephony; speech codecs; speech coding; E-model; ITU-T G.107; Perceptual Evaluation of Speech Quality algorithm; VoIP; Voice over Internet Protocol; codec G.729; equipment impairment factor; error concealment techniques; mean opinion score; mean opinion square; packet loss rates; packet sizes; Degradation; Delay; Distortion measurement; Drives; Humans; Internet telephony; Jitter; Speech analysis; Systems engineering and theory; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Haptic, Audio and Visual Environments and Their Applications, 2003. HAVE 2003. Proceedings. The 2nd IEEE Internatioal Workshop on

Print_ISBN

0-7803-8108-4

Type

conf

DOI

10.1109/HAVE.2003.1244724

Filename

1244724