NDLI: Subjective evaluation of conversational multimedia quality in IP networks

Content Provider	IEEE Xplore Digital Library
Author	Brauer, F. Ehsan, M.S. Kubin, G.
Copyright Year	2008
Description	Author affiliation: Dept. of Electr. Eng., COMSATS Inst. of Inf. Technol., Lahore (Ehsan, M.S.) \|\| Signal Process. & Speech Commun. Lab., Graz Univ. of Technol., Graz (Brauer, F.; Kubin, G.)
Abstract	Human perception of Voice- and Video-over-IP connection quality is influenced by a lot of factors, first of all the network conditions like packet loss rate, delay and jitter but also others like the hard- and software (speech or video codec) in use. In this paper an experimental setup is developed which allows adjustment of certain network parameters to study their impact on the perceived conversational quality. Furthermore, the new $LEGO^{reg}$ model conversation test scenario is proposed that motivates two test persons to engage in highly interactive conversations with balanced use of both the audio and video modalities. The setup was used in a subjective assessment of different delay times and packet loss rates. The results of the assessment, which involved 28 test persons, are presented in terms of Mean Opinion Scores (MOS).
Starting Page	872
Ending Page	876
File Size	430803
Page Count	5
File Format	PDF
ISBN	9781424422944
DOI	10.1109/MMSP.2008.4665196
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-08
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay NIST Buildings Codecs Software Speech Streaming media
Content Type	Text
Resource Type	Article

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