June 2006 | Conference Paper
Listening-Time Relationships in a Subjective Speech Quality Experiment
Cite This Publication
Stephen D. Voran, “Listening-Time Relationships in a Subjective Speech Quality Experiment,” in Proceedings of the 5th International MESAQIN (Measurement of Speech and Audio Quality in Networks) Conference Prague, Czech Republic, June 2006.
Stephen D. Voran 
Abstract: We have designed, conducted, and analyzed a subjective speech quality experiment with unrestricted timing where subjects can vote whenever their opinions are fully formed, rather than at fixed time intervals. Analysis of the resulting listening times reveals that subjects tend to listen for a longer time before approving a recording and for a shorter time before rejecting a recording. This listening-time difference tends to increase for poorer quality systems and for more critical subjects. We present a mathematical model that reproduces these results. In addition, subjects operate more quickly as they move through the experiment.
Keywords: speech quality; listening time; subjective test
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Stephen D. Voran
Institute for Telecommunication Sciences
(720) 446-6425
svoran@ntia.gov
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