대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2005년도 추계종합학술대회
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- Pages.457-460
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- 2005
보청기 텔레코일의 전자계 잡음 소거를 위한 회로 설계
Circuit Design for Hearing Aid Telecoil Electromagnetic Noise Cancellation
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Jarng, Soon-Suck
(Information, control & Instrumentation Engineering Department Chosun University) ;
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Jarng, You-Jung
(Information, control & Instrumentation Engineering Department Chosun University) ;
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Lee, Je-Hyeong
(Algorkorea)
- 발행 : 2005.11.26
초록
When a hearing aid' s user is listening through telephone or cellular phone, he/she usually suffers from severe electrical magnetic interference noise. It is because hearing aids amplify voice signal as well as background noise. A telecoil, an induction coil, is a possible solution for the problem. Because a telecoil has the characteristic of high pass filter, it has some problem of resulting increased high frequency noise. For solving this problem, we can use a capacitor connected with the telecoil in parallel. According to capacitance, receiving signal quality may change. In this paper, proper capacitor values for the best sound quality are investigated by experimental work.
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