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

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Foilsithe in:	PLoS One vol. 13, no. 7 (Jul 2018), p. e0199787
Príomhchruthaitheoir:	Avetisyan, Hakob
Rannpháirtithe:	Jan Holub ⨯
Foilsithe / Cruthaithe:	Public Library of Science
Ábhair:	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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Achoimre:	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
Foinse:	Health & Medical Collection