Accession Number:

AD0256258

Title:

INVESTIGATION AND EVALUATION OF THE GEL SPEECH SYSTEM TEST SET

Descriptive Note:

Corporate Author:

GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION

Personal Author(s):

Report Date:

1961-02-28

Pagination or Media Count:

1.0

Abstract:

Mathematical models of the articulation scores of an untrained and a fully trained team of listeners were developed. The maximum variance of the trained team was found, and the precision of the results was computed. An investigation was made of the GEL Speech System Test Sets capability for providing a measure of the degradation in intelligibility that occurs when a voice signal is passed through a noisy speechcommunication channel. The test sets measure of intelligibility was compared with that of a trained articulation team, and calibration curves were established for a variety of interference conditions. The validity of the test set design principle was verified for particular interference types, and the ability of the test set to perform in accordance with that design principle was determined. The inherent test set limitations are briefly discussed, and the possible extension of the test sets capability for ranking communication systems for other interference conditions is summarized. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE