Some Implications of Binaural Signal Selection for Hearing Aid Evaluation Clinical techniques for evaluating binaural hearing aids have been inconclusive. This paper offers some explanations of shortcomings in present approaches, concentrating upon several characteristics to be included in an adequate clinical procedure. These are the presence of competing sound; S/N ratios permitting measurable increases in discrimination from advantageous listening conditions; ... Research Article
Research Article  |   September 01, 1964
Some Implications of Binaural Signal Selection for Hearing Aid Evaluation
 
Author Affiliations & Notes
  • Allan J. Heffler
    Cincinnati Speech and Hearing Center, Cincinnati, Ohio
  • Martin C. Schultz
    University of Michigan, Ann Arbor, Michigan
Article Information
Research Articles
Research Article   |   September 01, 1964
Some Implications of Binaural Signal Selection for Hearing Aid Evaluation
Journal of Speech, Language, and Hearing Research, September 1964, Vol. 7, 279-289. doi:10.1044/jshr.0703.279
History: Received April 2, 1964
 
Journal of Speech, Language, and Hearing Research, September 1964, Vol. 7, 279-289. doi:10.1044/jshr.0703.279
History: Received April 2, 1964

Clinical techniques for evaluating binaural hearing aids have been inconclusive. This paper offers some explanations of shortcomings in present approaches, concentrating upon several characteristics to be included in an adequate clinical procedure. These are the presence of competing sound; S/N ratios permitting measurable increases in discrimination from advantageous listening conditions; elimination of localization and sidedness effects; and the requirement of long duration signals with credit for partial responses.

The study was an approach on normal-hearing individuals under several S/N ratios, with occlusion of one ear as an experimental variable. Listening was accomplished under homophasic and antiphasic conditions for each combination of the other conditions.

Results demonstrated significant differences among the listening conditions and the results have been rationalized in schema for testing binaural hearing aids under various hearing-loss circumstances. Applications to auditory training are discussed.

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