환기구 직경이 실이 음향에 미치는 영향
(주)학지사
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- 2017.02.01
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- 2016.01
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서지정보
ㆍ발행기관 : 한국청각언어재활학회
ㆍ수록지정보 : 청능재활 / 12권 / 4호
ㆍ저자명 : 김민성, 허승덕
목차
INTRODUCTION
MATERIALS AND METHODS
RESULTS
DISCUSSIONS
REFERENCES
한국어 초록
영어 초록
Purpose: A number of hearing loss had gradually been increased due to several reasons including newborn hearing screening, social
environmental, and sociodemographic factors. In most cases, hearing loss is treated with the use of hearing aids. Hearing aids are composed
of several parts, and the mold is a primarily component. Horn, damper, and vent of mold can control the sound pressure level
in the ear canal, and furthermore, the vent can reduce the occlusion effect by controlling the low frequency of below 1,000 Hz. This
study aimed to acquire basic information for audiological rehabilitation by investigating the effect of a vent diameter on the external
auditory canal. Methods: Thirty-three ears of 18 subjects were participated. They had no problem with external and middle ears. Real
ear measurement was used. Real ear unaided gain (REUG) and real ear aided gain (REAG), which were found by opening vent diameter 0,
1.1, 2.1, 3, 4 mm, and open ear canal. The study compared the differences between REUG and REAG, statistically. Results: There was
observed significant gain differences at below 400 Hz in diameter 1.1, 2.1 mm, below 500 Hz in diameter 3, 4 mm, and below 600 Hz
when the ear canal opens. Conclusion: These findings will be expected to be useful information to predict the vent effect in audiological
rehabilitation using hearing aids.
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