Journal of Speech and Hearing Research Vol.38 726-736 June 1995.
© American Speech-Language-Hearing Association
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Measurement of Speech Quality as a Tool to Optimize the Fitting of a Hearing Aid

Jill E. Preminger 1
Dianne J. Van Tasell 1
1 University of Minnesota Minneapolis

jpreming{at}turbo.kean.edu

The purpose of the present research was to develop a theoretical basis for the adjustment of hearing aid frequency response based on speech quality measurements. Speech quality measurements were made using continuous discourse and a category rating procedure for the following dimensions: intelligibility, pleasantness, loudness, effort, noisiness, and total impression. Speech quality ratings were obtained from a group of listeners with hearing loss who wore hearing aids. The stimulus conditions simulated hearing aid frequency response alterations within a frequency response range where intelligibility was held constant at or near 100%. The subject ratings revealed that (a) different listeners interpreted the individual dimensions in different ways; (b) within listeners, most of the dimensions were unique; that is, they were rated differently; and (c) across listeners, pleasantness was the dimension most highly correlated with total impression.

KEY WORDS: hearing aids, speech quality, speech intelligibility

Submitted on May 12, 1994
Accepted on January 17, 1995


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