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자료유형
학술대회자료
저자정보
권병호 (KAIST) 박영진 (한국과학기술원)
저널정보
한국소음진동공학회 한국소음진동공학회 학술대회논문집 한국소음진동공학회 2012년도 춘계학술대회 논문집
발행연도
2012.4
수록면
763 - 768 (6page)

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이 논문의 연구 히스토리 (5)

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Active window system which can reduce the environmental noises, such as traffic noise and construction noise, from an open window into a room was proposed in the previous works. The key idea of the proposed active window system was that the control sources are approximately collocated with the primary noise source in terms of the acoustic power for global noise reduction throughout the interior room. Moreover, because it is important not to intrude into the living space in the building environment, no error sensors were used and an open-loop control method using control sources at the window frame and the reference sensors outside the room was used for the proposed system. The open-loop control gain was calculated by the interior room model assumed as the semi-infinite space, and the interior sound field was estimated by Rayleigh integral equation under the baffled window model assumption. However, windows with a finite thickness should were considered for the calculation of the open-loop control gain of the active window system since these are representative of most window cases. Therefore, the finite thickness window model based on the Sgard’s model was derived and the open-loop control gain using the interior sound field estimated by that model was calculated for active window system. To compare the performance of these two models, a scale-model experiment was performed in an anechoic chamber according to noise source directions. Experimental results showed that the performance for the thickness window model is better than the baffled window model as the angle with respect to the perpendicular direction is larger.

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ABSTRACT
1. 서론
2. 능동 소음제어 창문
3. 유한 두께 창문 모델에 의한 내부 음장 예측
4. 능동 소음제어 창문의 제어 성능 비교
5. 결론
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