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Accession Number:
ADA056272
Title:
Speech Quality Measurement
Descriptive Note:
Phase rept.
Corporate Author:
GEORGIA INST OF TECH ATLANTA SCHOOL OFELECTRICAL ENGINEERING
Report Date:
1978-05-01
Pagination or Media Count:
177.0
Abstract:
Speech quality measurement--in terms of user acceptability--is considered from 3 points of view subjective testing, objective testing, and communicability testing. It is assumed that good intelligibility is always present. Subjective testing is considered from the perspective of isopreference, relative preference, and absolute-preference, with isometric and parametric test methodologies, with the results of PARM and QUART as a basis. It is felt that the best approach for future subjective testing will be a parametric approach using representative male and female talkers to cover the expected range of pitch. Objective testing is considered as a possible alternative to subjective testing. A two part experimental study of the relationship between a number of objective measures and the subjective acceptability measures available from the PARM study is described. In the communicability test, the user is expected to perform on the data some cognitive task which is measurable. The rationale is that the user will be better able to perform if the quality is high, than if his cognitive resource, assumed fixed, is saturated due to poorer quality transmission.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
