Communications - Scientific Letters of the University of Zilina 2012, 14(2):17-21 | DOI: 10.26552/com.C.2012.2.17-21

Subjective Testing and Objective Modelling of Influence of Different Social Classes to Voice Call Quality Perception

Jan Holub1, Pavel Soucek1
1 Department of Measurement K13138, FEE, CTU Prague, Czech Republic

The paper presents the analysis of different perception of quality of transmitted voice by different social classes in conference call. Two different social classes (namely people with great income, who are older than 35 and people with low income, who are younger than 25) have been examined by means of ITU-T P.800 conversational tests. Significant differences in perception between those two classes have been identified.

Keywords: speech quality, subjective testing, mean opinion score

Published: June 30, 2012  Show citation

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Holub, J., & Soucek, P. (2012). Subjective Testing and Objective Modelling of Influence of Different Social Classes to Voice Call Quality Perception. Communications - Scientific Letters of the University of Zilina, 14(2), 17-21. doi: 10.26552/com.C.2012.2.17-21
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    References

    1. ITU-T Rec. P. 800: Methods for Subjective Determination of Transmission Quality, International Telecommunication Union, Geneva, 1996ITU-T Rec. P.863, Perceptual Objective Listening Quality Assessment (POLQA), Intern. Telecommunication Union, Geneva, 2011
    2. ITU-T Rec. P.862, Perceptual Evaluation of Speech Quality (PESQ): An Objective Method for End-to-End Speech Quality Assessment of Narrow-band Telephone Networks and Speech Codecs, Intern. Telecommunication Union, Geneva
    3. ITU-T Rec. P.863, Perceptual Objective Listening Quality Assessment (POLQA), Intern. Telecommunication Union, Geneva, 2011
    4. ITU-T Rec. P.563, Single-ended Method for Objective Speech Quality Assessment in Narrow-band Telephony Applications, Intern. Telecommunication Union, Geneva, 2004
    5. HOLUB, J., KASTNER, M., TOMISKA, O.: Delay Effect on Conversational Quality in Telecommunication Networks: Do We Mind? In: Wireless Telecommunications Symposium 2007 [CD-ROM]. Pomona, California: IEEE Communications Society, 2007 Go to original source...
    6. KITAWAKI, N., ITOH, K.: Pure Delay Effect on Speech Quality in Telecommunications. IEEE J. Sel. Areas Comm., 9(4): 586-593, 1991 ITU-T Rec. P.863, Perceptual Objective Listening Quality Assessment (POLQA), Intern. Telecommunication Union, Geneva, 2011 Go to original source...
    7. HOLUB, J., SMID, R., BACHTIK, M.: Child Listeners as the Test Subject - Comparison with Adults and P.862, MESAQIN, Prague, CTU, 2003
    8. SOUCEK, P., HOLUB, J.: How do Perceived Speech Quality and Acceptability Level Shifts During Time, MESAQIN, Prague, CTU, 2011.

    This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


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