The method of masticatory movement noise reduction using the dual channel implantable microphone

S. T. Woo, D. W. Kim, S. B. Lee, J. H. Park, K. W. Seong, J. H. Lee, J. H. Cho

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The input part of fully implantable hearing devices (FIHDs) was using the implantable microphone that was implanted under the skin of the temporal bone. So, implantable microphonès characteristics can be affected by the masticatory movement and moving artifacts. In this paper, the 2-channel implantable microphone was designed for masticatory movement noise reduction. For in vivo experiment, the fabricated microphone was implanted in the rabbit. And then, the 1 kHz pure-tone sound by a speaker was applied to the rabbit, and the feeds were given simultaneously to the rabbit. The measured signal was processed using the adaptive filter with least mean square (LMS) algorithm for noise reduction. To confirm performance of proposed method, the correlation coefficient and signal to noise ratio (SNR) before and after the signal processing were calculated.

Original languageEnglish
Title of host publicationIET International Conference on Information Science and Control Engineering 2012, ICISCE 2012
Edition636 CP
DOIs
StatePublished - 2012
EventIET International Conference on Information Science and Control Engineering 2012, ICISCE 2012 - Shenzhen, China
Duration: 7 Dec 20129 Dec 2012

Publication series

NameIET Conference Publications
Number636 CP
Volume2012

Conference

ConferenceIET International Conference on Information Science and Control Engineering 2012, ICISCE 2012
Country/TerritoryChina
CityShenzhen
Period7/12/129/12/12

Keywords

  • Adaptive filter
  • Fully implantable hearing devices
  • Implantable microphone
  • In vivo experiment
  • Masticatory movement

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