한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제33권6호
  • /
  • Pages.375-382
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  • 2014
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  • 1225-4428(pISSN)
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  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
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협대역 능동 소음 제어를 위한 새로운 병렬 기법

A New Parallel Method for Narrowband Active Noise Control

  • Kim, Seong-Woo (School of Electrical and Electronic Engineering, Yonsei University) ;
  • Park, Young-Cheol (Computer and Telecommunications Engineering Division, Yonsei University) ;
  • Seo, Young-Soo (Agency for Defense Development) ;
  • Youn, Dae Hee (School of Electrical and Electronic Engineering, Yonsei University)
  • 투고 : 2014.07.13
  • 심사 : 2014.09.24
  • 발행 : 2014.11.30
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초록

많은 실제 능동 소음 제어 분야에서 주요 소음은 다수의 인접한 배음으로 구성된다. 또한 협대역 능동 소음 제어 시스템은 정현파 세트나 혹은 합으로 구성된 기준 신호에 의해 동작하는 적응 필터들로 구성된다. 본 논문은 직접형, 병렬 형, 간소화한 병렬 형의 능동 소음 제어 시스템이 기본 주파수와 인접한 정현파의 주파수 간격에 영향을 받음을 보여주고 이를 분석한다. 또한 본 논문은 기준 주파수에 독립적인 새로운 간소화한 병렬 형 협대역 능동 소음 제어 시스템을 제안한다. 본 논문에서의 제시한 분석을 증명하고 새로운 협대역 능동 소음 제어 시스템을 기존 협대역 능동 소음 제어 시스템과 비교하기 위해 컴퓨터 시뮬레이션을 수행한다.

In many practical active noise control applications, the primary noise contains multiple closely-spaced harmonics. A narrowband ANC system consists of adaptive filters excited by a composite reference signal, which is the set or sum of sinusoids. This paper analyzes and shows that the convergence speeds of the direct form, parallel form, and simplified parallel form narrowband ANC systems are affected by the fundamental frequency and frequency separation between two adjacent sinusoids in the reference signal. This paper also proposes the new simplified parallel form narrowband ANC system whose convergence speed is independent on the frequency of the reference signal. Computer simulations are conducted to verify the analysis presented in the paper and to compare the proposed narrowband ANC system with the conventional narrowband ANC system.

키워드

참고문헌

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