Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Subjective and Objective Rating of Intelligibility of Speech Recordings

Authors: Gover, Bradford N.; Bradley, John S.

AES Convention 123 · Paper 7178 · October 2007

Abstract

Recordings of test speech and an STIPA modulated noise stimulus were made with several microphone systems placed in various locations in a range of controlled test spaces. The intelligibility of the test speech recordings was determined by a subjective listening test, revealing the extent of differences among the recording systems and locations. Also, STIPA was determined for each physical arrangement, and compared with the intelligibility test scores. The correlation between STIPA and the intelligibility scores was not found to be high in all situations. A computer program was written to determine STIPA in accordance with IEC 60268-16. The result was found to be highly sensitive to the method of determining the modulation transfer function at each modulation frequency, yielding the most accurate result when normalizing by the pre-measured properties of the specific stimulus used.

Details

Published in
AES Convention 123
AES Convention
123
Paper number
7178
Publication date
October 6, 2007
Session subject
Perception
Affiliation
National Research Council Canada (See document for exact affiliation information.)
Type
Convention Paper