Is taking into account the subjects degree of knowledge and expertise enough when rating quality?

This paper provides the results of a speech quality listening test on Wideband (WB, 500-7000 Hz) and narrowband (NB; 300-3400 Hz) codecs for new wideband-based, so-called "high-definition" (HD Voice) telephony services. Aside of error-free coding, the experiment also evaluated the effects...

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Bibliographic Details
Main Authors: Quintero, M. R., Raake, A.
Format: Conference Proceeding
Language:English
Subjects:
Biological system modeling
Codecs
communication
communication system economics
Human Factors
Multimedia
Narrow Band
Narrowband
Noise
QoE
Speech
Technological innovation
VoIP
Wide band
Wideband
Online Access:Request full text
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Summary:This paper provides the results of a speech quality listening test on Wideband (WB, 500-7000 Hz) and narrowband (NB; 300-3400 Hz) codecs for new wideband-based, so-called "high-definition" (HD Voice) telephony services. Aside of error-free coding, the experiment also evaluated the effects of packet loss and external noise. Unlike "expert vs non-expert differentiation" typical of speech quality research, users are classified into six groups according to demographic characteristics, their attitude towards adopting new technologies and socio-economic information. With this experiment, we want to present how factors beyond the level of prior knowledge of the users affect their perception of quality.
DOI:10.1109/QoMEX.2012.6263868