AVETISYAN, H. and J. HOLUB. Subjective Speech Quality Measurement with and without Parallel Task: Laboratory Test Results Comparison. PLoS ONE. 2018, 13(7) ISSN 1932-6203. DOI 10.1371/journal.pone.0199787. Available from: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0199787
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.
