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American Journal of Audiology Vol.2 64-67 November 1993.
© American Speech-Language-Hearing Association
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Changes in Hearing Sensitivity Following Portable Stereo System Use

Steven Pugsley 1, Andrew Stuart 1, Joseph Kalinowski 1, and Joy Armson 1

1 Dalhousie University, Halifax, Nova Scotia

Changes in hearing sensitivity following portable stereo system (PSS; Sony Walkman Model WM-AF605 with Sony Semiaural Headphones Model MDR-A21L) use were investigated. Test-retest differences (TRDs) in audiometric thresholds at eight frequencies (250, 500, 1000, 2000, 3000, 4000, 6000, & 8000 Hz) were obtained from 15 young adults before and after one hour of PSS exposure at their preferred listening levels.

Values for the 95% confidence levels representing critical differences in test-retest auditory thresholds for the eight test frequencies were generated from a control group of 15 young adults. Experimental subjects' TRDs, when compared to the critical TRDs, failed to display a decrease in hearing sensitivity after one hour of PSS use. It is suggested that PSS use at preferred listening levels, following an exposure time of one hour, may not contribute to a significant impairment in hearing sensitivity.

Key Words: portable stereo system, hearing sensitivity, critical differences, test-retest audiometric thresholds

Submitted on January 12, 1993
Accepted on July 13, 1993






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