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Journal Article

On Some Biases Encountered in Modern Audio Quality Listening Tests-A Review

Authors: Zielinski, Slawomir; Rumsey, Francis; Bech, Søren

Journal of the Audio Engineering Society · Volume 56 · Issue 6 · pp. 427–451 · June 2008

Abstract

A careful evaluation of listening tests designed to measure audio quality shows that they are vulnerable to systematic errors, which include biases due to affective judgments, response mapping bias, and interface bias. As a result of factors such as personal preferences, the appearance of the equipment, and the listeners' expectations or mood, errors can range up to 40% with respect to the total range of the scale. As a general conclusion, test results should be considered relative, rather than absolute. Scales in previous studies, which have been assumed to be linear, may exhibit departure from linearity. The visual appearance of the user interface may lead to severe quantization of the distribution of scores. Recommendations are offered to improve audio quality tests.

Details

Publication
Journal of the Audio Engineering Society
Volume
56
Issue
6
Pages
427–451
Publication date
June 6, 2008
Affiliation
Institute of Sound Recording, University of Surrey, Guildford, GU2 7XH, UK ; Bang & Olufsen, Struer, Denmark (See document for exact affiliation information.)
Type
Journal Article