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S. Voran, "Techniques for Comparing Objective and Subjective Speech Quality Tests,"
Proceedings of the Speech Quality Assessment Workshop, Bochum, Germany, November 1994.
Abstract:
Objective (or instrumental) tests of speech quality have been proposed as ways to reduce the
need for expensive and time-consuming subjective (or auditory) tests. Both types of tests attempt to
quantify the range of opinions that listeners express in response to a group of speech transmission
or storage devices, but objective test results often show measurable deviation from subjective test results.
This deviation may be judged to be acceptable if the objective test offers significant savings of time and expense.
This cost-performance judgment cannot be made without a meaningful statistical measure of the deviation that is
likely to be associated with the objective test. This paper offers a number of techniques that compare both the
central tendencies and the uncertainties of two tests. The resulting statistics have direct, intuitive interpretations.
Full Paper |
