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Audiology and Speech Research > Volume 12(4); 2016 > Article
Audiology and Speech Research 2016;12(4): 204-208.
Published online: October 31, 2016.
doi: http://dx.doi.org/10.21848/asr.2016.12.4.204
환기구 직경이 실이 음향에 미치는 영향
김민성1,2, 허승덕3
1대구대학교 재활과학대학원 언어치료학과
2부산대학교병원 이비인후과
3대구대학교 재활과학대학 언어치료학과
Effects of Vent Diameter on Real Ear Acoustics
Minsung Kim1,2, Seungdeok Heo3
1Department of Speech Language Pathology, Graduate School of Rehabilitation Sciences, Daegu University, Gyeongsan, Korea
2Department of Otorhinolaryngology, Pusan National University Hospital, Busan, Korea
3Department of Speech Language Pathology, College of Rehabilitation Sciences, Daegu University, Gyeongsan, Korea
Correspondence  Seungdeok Heo ,Tel: +82-53-850-4326, Fax: +82-53-850-4329, Email: audiolog@daegu.ac.kr
Received: June 14, 2016; Revised: October 5, 2016   Accepted: October 5, 2016.  Published online: October 31, 2016.
ABSTRACT
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.
Method:
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.
Key Words: Earmold, Vent, Hearing aid, Real ear unaided gain, Real ear measurement.
중심단어: 귀꽂이· 환기구· 보청기· 외이도공명· 실이 측정
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