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Journal of Speech and Hearing Research Vol.20 653-660 December 1977.
© American Speech-Language-Hearing Association
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Calibration Force Levels for Bone Conduction Vibrators

Bradley L. Billings
Audiology Center of Redlands, Redlands, California

Margaret Winter
University of Redlands, Redlands, California

Two bone conduction vibrators (Radioear B71 and B72) and a headband (Radioear P-3333) have been developed to meet specifications of both the International Electrotechnical Commission and the American National Standards Institute. Pure-tone thresholds for air conduction and bone conduction were obtained from 24 normal-hearing young adults at audiometric frequencies between 250 and 4000 Hz. Results of this study are in good agreement with the standard air conduction threshold sound pressure levels (ANSI) and with bone conduction threshold force levels reported in the literature.






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Copyright © 1977 by the American Speech-Language-Hearing Association.