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Subjective speech quality measurement with and without parallel task: Laboratory test results comparison

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Publié dans:PLoS One vol. 13, no. 7 (Jul 2018), p. e0199787
Auteur principal: Avetisyan, Hakob
Autres auteurs: Jan Holub ⨯
Publié:
Public Library of Science
Sujets:
International Telecommunication Union Czech Technical University
Czech Republic
Social
Telecommunications systems
Signal processing
Environmental conditions
Speech
Data analysis
Noise
Laboratory tests
Internet telephony
Test methods
Electrical engineering
Quality
Background noise
Quality assessment
Age
Experiments
Listening
Standardization
Algorithms
Testing laboratories
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Résumé:This paper focuses on a novel methodology of subjective speech quality measurement and repeatability of its results between laboratory conditions and simulated environmental conditions. A single set of speech samples was distorted by various background noises and low bit-rate coding techniques. This study aimed to compare results of subjective speech quality tests with and without a parallel task deploying the ITU-T P.835 methodology. Afterward, tests results performed with and without a parallel task were compared using Pearson correlation, CI95, and numbers of opposite pair-wise comparisons. The tests show differences in results in the case of a parallel task.
ISSN:1932-6203
DOI:10.1371/journal.pone.0199787
Source:Health & Medical Collection