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Study and Effects of Bone Conducted Signal on the Implantable Microphone  

Woo, S.T. (경북대학교 의용생체공학과)
Jung, E.S. (경북대학교 대학원 전자전기컴퓨터학부)
Kim, M.N. (경북대학교 의학전문대학원)
Cho, J.H. (경북대학교 IT 대학)
Publication Information
Journal of rehabilitation welfare engineering & assistive technology / v.4, no.1, 2010 , pp. 29-34 More about this Journal
Abstract
The fully implantable hearing devices (FIHDs) have been studied to compensate the defect of conventional hearing aids. Typically, a microphone for FIHDs was implanted under the skin of the temporal bone. So, implantable microphone characteristics can be affected by the eating food, chattering teeth and moving artifact. In this paper, we fabricated the physical model that was similar to characteristics of human temporal bone and skin, and we measured implanted microphone sensitivity for effect of bone conducted noise signal. For the measurement of microphone sensitivity, we applied 1 kHz pure sounds that were transmitted to implanted microphone and sine wave vibrations of varied frequency were simultaneously transmitted through the artificial bone. As a result, sensitivity of implanted microphone can be modified by bone conducted signal and this phenomenon was confirmed at varied frequency band.
Keywords
Fully implantable hearing devices; Bone-conducted signal; Implantable microphone;
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Times Cited By KSCI : 1  (Citation Analysis)
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