Accession Number:

AD0694100

Title:

ALTERNATIVE STRATEGIES IN THE EVALUATION OF SPEECH SYSTEMS

Descriptive Note:

Final rept. 15 Feb 1968-14 Jul 1969

Corporate Author:

EDUCATIONAL RESEARCH CORP CAMBRIDGE MA

Personal Author(s):

• Mostofsky, David I.

Report Date:

1969-08-01

Pagination or Media Count:

126.0

Abstract:

The report summarizes the results of a program of research concerned with the perception of degraded speech in normal and pathological listeners. The comparisons were derived from performance in a two-category judgment task where the anchor values remain accessible to the subject and under the control of the experimenter. Response decisions and frequency of anchor testings are recorded together with decision times in computer compatible tape format. In addition, studies were designed to examine selected features of utility effects and applications of unidimensional and multidimensional scaling procedures. The respective sections of this report describe 1 the development and applications of the modified, non-verbal psychophysical technique 2 the design of a data collection system 3 variations in response utility and 4 selected scaling procedures. These investigations were shown to be particularly appropriate for assessments of communication with vocoded materials in addition to suggesting alternative experimental paradigms for the study of audiological and perceptual problems.

Descriptors:

• *SPEECH RECOGNITION
• *PSYCHOPHYSICS
• DATA PROCESSING
• PERFORMANCE(HUMAN)
• COMPUTER PROGRAMMING
• RECORDING SYSTEMS
• STATISTICAL PROCESSES
• AUDITORY PERCEPTION
• REACTION(PSYCHOLOGY)
• VOCODERS
• INTELLIGIBILITY
• SPEECH
• TEST METHODS
• ANALYSIS OF VARIANCE
• ACOUSTIC SIGNALS

Subject Categories:

• Psychology
• Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE