AUDIOLOGY JAPAN
Online ISSN : 1883-7301
Print ISSN : 0303-8106
ISSN-L : 0303-8106
Fine Pitch Match Test for Tinnitus by Békésy Audiometer
Makoto OdaIsuzu KawabataMasaaki YamaneTaeko Okuno
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1983 Volume 26 Issue 2 Pages 112-122

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Abstract

Fine pitch match test for subjective tinnitus in 44 patients was performed by using Békésy type audiometer. First, the pitch of tinnitus was examined roughly by conventional pitch match technique at seven frequencies by pure tone audiometer, and then fine pitch was determined by pure tone stimulus with 10dB above threshold over the full range by Békésy type audiometer between one octave higher and lower in the frequencies already examined.
The tinnitus of 33 out of 44 patients seemed to be consisted of pure tones and in the other 11 patients tinnitus did not match to pure tone. Most patients with high tone loss had a tinnitus of pure tone or alike. And most patients who had suffered from hearing impairment of sensory type, especially hair cell lesion, showed pure tone like tinnitus. However fine pitch match test by pure tone was failed in patients of acoustic tumor or presbycusis. These patients noted that their tinnitus was similar to white noise or band-noise. In the cases having tinnitus without hearing impairment in conventional audiogram, it was concluded that there were the patients with tinnitus similar to pure tone and hearing impairment only over 8000Hz on Békésy audiogram, and the patients with white noise like tinnitus and normal audiogram.

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© Japan Audiological Society
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