한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2002년도 춘계학술대회논문집
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- Pages.525-529
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- 2002
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- 1598-2548(pISSN)
스마트 폼을 이용한 덕트 내 넓은 영역에서의 소음 제어 및 상쇄 경로 최적화
Active noise control in the global region of a duct using smart foam and FIR filter optimization of cancellation Path
초록
ANC technic can overcome the limited performance of passive noise control at the low frequency range. But it has the local quiet control region in general. In this paper, it is discussed that the global noise control in a circular duct using a ring type smart foam and a porous material. LMS algorithm and RLS algorithm are used to find optimal orders of cancellation path. Experiments are performed to compare the efficiency of RLS algorithm with that of LMS algorithm.