대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)

  • 제28권2호
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  • Pages.205-211
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  • 2007
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  • 1229-0807(pISSN)
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  • 2288-9396(eISSN)
대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
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청각신경 시냅스의 적응 효과를 이용한 인공와우 어음처리 알고리즘의 개선에 대한 시뮬레이션 연구

A Simulation Study on Improvements of Speech Processing Strategy of Cochlear Implants Using Adaptation Effect of Inner Hair Cell and Auditory Nerve Synapse

  • 김진호 (연세대학교 보건과학대학 의공학과) ;
  • 김경환 (연세대학교 보건과학대학 의공학과)
  • Kim, Jin-Ho (Department of Biomedical Engineering, College of Health Science, Yonsei University) ;
  • Kim, Kyung-Hwan (Department of Biomedical Engineering, College of Health Science, Yonsei University)
  • 발행 : 2007.04.30
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초록

A novel envelope extraction algorithm for speech processor of cochlear implants, called adaptation algorithm, was developed which is based on a adaptation effect of the inner hair cell(IHC)/auditory nerve(AN) synapse. We achieved acoustic simulation and hearing experiments with 12 normal hearing persons to compare this adaptation algorithm with existent standard envelope extraction method. The results shows that speech processing strategy using adaptation algorithm showed significant improvements in speech recognition rate under most channel/noise condition, compared to conventional strategy We verified that the proposed adaptation algorithm may yield better speech perception under considerable amount of noise, compared to the conventional speech processing strategy.

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참고문헌

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