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pp.1-7
Published Date 1952/1/20
DOI https://doi.org/10.11477/mf.1492200594

OWADA compares the results that are obtained in masking of tinnitus by pure tones and by changing level of intensity of thyratron noise. The masking by means of latter process is more readily accomplished than that through means of pure tones. It also affor-ds a means by which to ascertain the intensity and, to a certain extent, charaeter of the tinnitus to wh-at significance these results may carry clinically tow ards treatment of tinnitus is still in the process of observation. Hearing tests are performed byusing this noise and the results are compared tot hose taken with the audiometer. The pattern of hearing lcss in identical person taken with the noise closely fo- llow that obtained by the audiometer butin most cases examined the value of the hearingloss obtai ned with the noise registered 10 db lessthan that shown by audiometer readings. Analysis of thyratron noise waves and observations of the sound source are made; frequency character of the reciever is de termined.


Copyright © 1952, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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