대한의용생체공학회:학술대회논문집 (Proceedings of the KOSOMBE Conference)

대한의용생체공학회 (The Korean Society of Medical and Biological Engineering)
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디지탈 청각 보조 시스템의 궤환 잡음 제거기 설계

A Design of the Feedback Canceller in Digital Hearing Aids System

  • 이현철 (서울시립대학교 전자공학과) ;
  • 김성환 (서울시립대학교 전자공학과)
  • Lee, H.C. (Department of Electronics Engineering, Seoul City University) ;
  • Kim, S.H. (Department of Electronics Engineering, Seoul City University)
  • 발행 : 1996.05.17
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초록

In this paper, we presented WT(wavelet transform) domain feedback canceller in hearing aids system. Most transform methods produce blocking effect and this effect degrades the performance of feedback canceller and overall hearing aids system. As a solution we proposed WT based feedback canceller. The performance of this new approach was compared with LOT (lapped orthogonal transform) based method in the frequency domain. As a result, WT based feedback canceller has not shown the blocking effect and improved convergence rate as compared with the LOT based feedback canceller.

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