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Design of a Signal Processing Module with Various Filters Characteristics for Fully Implantable Middle Ear Hearing Devices
Young-Ho YOON Hyung-Gyu LIM Jyung-Hyun LEE Hee-Joon PARK Il-Yong PARK Min-Kyu KIM Chul-Ho WON Byung-Seop SONG Jin-Ho CHO
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/06/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Papers Selected from 2005 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2005))
fully implantable middle ear hearing device, FIR filter, Remez algorithm, time-delay,
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In this paper, the voice signal processing module has been designed using the micro processor for the use of fully implantable middle ear devices (F-IMEHD). The voice signal processing module for F-IMEHD should be designed to compensate for the hearing loss of hearing impaired person and have the flexibility for compensating various hearing threshold level. So, the voice signal processing module has been designed and implemented to present the various frequency characteristics using the low-power micro processor, MSP430F169. The different voice signal path to the inner ear entrance was considered so that two voice signal would be combined in-phase using an all pass filter with a constant time-delay to improve the vibration of the ossicles.