Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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STABLE ADAPTIVE IIR FILTERS FOR ACTIVE NOISE CONTROL

능동 소음제어를 위한 안정한 적응 IIR 필터

  • Hong, Sun-Chul (Department of Electrical Engineering, Dankook University) ;
  • Yang, Dong-Sung (Department of Electrical Engineering, Dankook University) ;
  • Nam, Ill-Ryong (Department of Electrical Engineering, Dankook University) ;
  • Nam, Hyun-Do (Department of Electrical Engineering, Dankook University)
  • 홍순철 (단국대학교 전기공학과) ;
  • 양동성 (단국대학교 전기공학과) ;
  • 남일룡 (단국대학교 전기공학과) ;
  • 남현도 (단국대학교 전기공학과)
  • Published : 2000.07.17
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Abstract

In this paper. a stable IIR adaptive filter for active noise control is proposed. The IIR filter structure is more effective when acoustic feedback exists, in which case an order of a FIR filter must be very large if some of the poles of the ideal control filter are near the unit circle. But the IIR filter may have stability problems especially when the adaptive algorithm is not converged. A stabilizing procedure for IIR adaptive filter is presented in this paper, and computer simulation is performed to show the effectiveness of proposed schemes.

Keywords