한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제34권1호
  • /
  • Pages.46-51
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  • 2015
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  • 1225-4428(pISSN)
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  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
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비선형 왜곡을 보상하는 향상된 다채널 적응 소음 제어

Enhanced Multi-Channel Adaptive Noise Control Compensating Nonlinear Distortions

  • Kwon, Oh Sang (Department of Electrical and Electronics Engineering, The Cyber University of Korea)
  • 투고 : 2014.08.04
  • 심사 : 2014.10.31
  • 발행 : 2015.01.31
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초록

음향학적인 소음을 제어하는 영역에서는 스피커, 증폭기, 변환기, 그리고 마이크로폰 등에 의해서 전체 적응제어 시스템이 비선형이므로 소음 제어 성능은 비선형성 정도에 의해서 결정된다. 따라서 비선형성 왜곡을 보상하는 적응 제어 시스템이 필요하며, 본 논문에서는 비선형성 왜곡을 효과적으로 선형화하는 적응 보상기와 결합한 새로운 다채널 적응 소음 제어기를 제안하였다. 모의실험을 통해 제안한 적응 보상기가 비선형왜곡을 선형화하고 기존의 LMS 제어기보다 소음을 감쇠하는데 월등함을 증명하였다.

In fields of controlling acoustical noises, the overall adaptive control system is nonlinear due to the loudspeaker, amplifiers, converters, and microphones, etc. and the performance of noise control is decreased by the extent of nonlinearities, so an adaptive control system compensating nonlinear distortions is needed. In this paper, a new multi-channel adaptive noise controller was proposed, which was combined with the adaptive compensator to effectively linearize nonlinear distortions in the overall adaptive control system. Through computer simulations, the proposed adaptive compensator could linearize the nonlinear distortions and the proposed noise controller had better capability of controlling the noises than the conventional LMS controller.

키워드

참고문헌

  1. S. J. Elliott, P. A. Nelson, I. M. Stothers, and C. C. Boucher, "In-flight experiments on the active control of propellerinduced cabin noise," J. Sound and Vib, 219-238 (1990).
  2. S. J. Elliott, I. M. Stothers, P. A. Nelson, "A multiple error LMS algorithm and its application to the active control of sound and vibration," IEEE Trans. 35, 1423-1434 (1987).
  3. O. S. Kwon and I. W. Cha, "Multi-channel optional summed algorithm for active noise control," IET ELECTRONICS LETTERS 34, 1559-1560 (1998). https://doi.org/10.1049/el:19981083
  4. O. S. Kwon, "Hybrid adaptive volterra filter robust to nonlinear distortion" (in Korean), J. Acoust. Soc. Kr. 27, 95-103 (2008).
  5. B. Widrow and S. D. Stearns, Adaptive Signal Processing (Englewood Cliffs, New Jersey, 1985), pp. 270-294.
  6. D. D. Rife, "Modulation transfer function measurement with maximum-length sequences," J. Audio Eng. 40, 779-789 (1992).
  7. O. S. Kwon, "Robust active noise controller with hybrid adaptive nonlinear compensator" (in Korean), J. Acoust. Soc. Kr. 28, 16-22 (2009).

피인용 문헌

  1. Hearing aid application of feedback cancellation algorithm in frequency domain vol.35, pp.4, 2016, https://doi.org/10.7776/ASK.2016.35.4.272