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

Abstract

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.

Subjective Video QoE With a Hybrid Cognitive-Motor Task

“…Hybrid oriented tasks are activities that require the subjects to perform both physical and mental activities. e.g., driving a car [14], shooting in a laser shooting simulator [15], and also some psycho motors tasks as tasting activities [14].…”