Implementation of miniaturized microphone unit for implantable hearing aid and its characteristics

In this paper the miniaturized microphone unit that can be utilized to the implantable middle car and inner ear is designed and implemented. The implantable microphone unit that planed to set up in the center of the pinna has been designed to ensure the necessary dynamic range and to improve the sen...

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Bibliographic Details
Main Authors: KIM, Min-Kyu, HAN, Ji-Hun, YOON, Young-Ho, SONG, Byung-Seop, CHO, Jin-Ho
Format: Conference Proceeding
Language:English
Subjects:
Auditory system
Biological and medical sciences
Bones
Deafness
Dynamic range
Ear
Hearing aids
Humans
Medical sciences
Microphones
Organizing
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Signal processing
Technology. Biomaterials. Equipments. Material. Instrumentation
Online Access:Request full text
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Summary:In this paper the miniaturized microphone unit that can be utilized to the implantable middle car and inner ear is designed and implemented. The implantable microphone unit that planed to set up in the center of the pinna has been designed to ensure the necessary dynamic range and to improve the sensitivity of microphone unit. In addition to, the microphone unit is miniaturized and its biocompatibility of human body is considered. The microphone unit is composed of a minimized electric microphone, a titanium case which has 5.3 mm diameter and 3.7 mm height, a SUS316L vibrating membrane of 10 /spl mu/m thickness which is touched with a hypodermic tissue and adopted for the less attenuation of microphone sensitivity. Through the experiments of the fabricated microphone unit, it is verified that the implemented microphone unit operates up to the bandwidth of 5 kHz without declining of sensitivity in the 6 mm hypodermic tissue.
DOI:10.1109/IECON.2004.1432330