Accession Number:

ADA564752

Title:

Effects of Speech Intensity on the Callsign Acquisition Test (CAT) and Modified Rhyme Test (MRT) Presented in Noise

Descriptive Note:

Journal article

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE

Personal Author(s):

• Blue-Terry, Misty
• McBride, Maranda
• Letowski, Tomasz

Report Date:

2012-01-01

Pagination or Media Count:

6.0

Abstract:

This study sought to evaluate the effect of speech intensity on performance of the Callsign Acquisition Test CAT and Modified Rhyme Test MRT presented in noise. Fourteen normally hearing listeners performed both tests in 65 dB A white background noise. Speech intensity varied while background noise remained constant to form speech-to-noise ratios. Results showed that CAT recognition scores were significantly higher than MRT scores at the same SNRs however, the scores from both tests were highly correlated and their relationship for the SNRs tested can be expressed by a simple linear function. The concept of CAT can be easily ported to other languages for testing speech communication under adverse listening conditions.

Descriptors:

• *SPEECH
• *VOICE COMMUNICATIONS
• ACQUISITION
• ADVERSE CONDITIONS
• BACKGROUND NOISE
• FUNCTIONS(MATHEMATICS)
• HEARING
• INTENSITY
• LANGUAGE
• LINEARITY
• NOISE
• RATIOS
• RECOGNITION
• SCORING
• SIGNAL TO NOISE RATIO
• SPEECH TRANSMISSION
• TEST AND EVALUATION
• WHITE NOISE

Subject Categories:

• Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE