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Journal of Speech and Hearing Disorders Vol.45 16-26 February 1980.
© American Speech-Language-Hearing Association
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Electroacoustic Performance Characteristics of FM Auditory Trainers

Barry A. Freeman 1, J. Stephen Sinclair 1, and Donald E. Riggs 2

1 Vanderbilt University, Nashville, Tennessee
2 Bill Wilkerson Hearing and Speech Center, Nasville, Tennessee

This study investigated the electroacoustic performance characteristics of FM auditory trainers. Experiment one was designed to answer two interrelated questions. First, what are the differences in the electroacoustic performance of FM auditory trainers between the FM and EM modes? Second, is the method for evaluating electroacoustic performance of hearing aids also appropriate for assessing the response characteristics of FM auditory trainers? The purpose of the second experiment was to assess the effect that taper of the volume control dial had on performance of these trainers.

The study found that, with certain cautions, the ANSI S3.22-1976 procedures for assessing a hearing aid could be applied to the measurement of FM trainers. There were performance differences, however, between the auditory trainers when set to the FM and EM transmission modes. Thus, the electroacoustic assessment of FM units in both the EM and FM modes of operation is needed to assess their performance fully.

Submitted on September 24, 1978
Accepted on July 23, 1979






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