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Title |
Analysis of Applicability of Active Noise Control (ANC) technique for Reducing Inter-Floor Noise in Apartment Buildings
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Authors |
남진원(Jin-Won Nam) ; 김호진(Ho-Jin Kim) ; 김준환(Jun-Hwan Kim) ; 위혁(Hyuk Wee) ; 김중관(Joong-Kwan Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.5.49 |
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Keywords |
능동소음제어; 층간소음; 수치 시뮬레이션; 필터-x 최소제곱평균 알고리즘; 공동주택; 가속도계; 2차 전달경로 Active Noise Control; Inter-Floor Noise; Numerical Simulation; Fx-LMS algorithm; Apartment Building; Accelerometer; Secondary Path |
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Abstract |
In this study, numerical simulations for reducing noise between floors in an apartment building was carried out using Active Noise Control (ANC) technology. In order to examine the feasibility of using ANC to reduce noise between floors, accelerometers and microphones for noise collection were installed in the inter-floor noise test facility to measure noise and vibration caused by the impact ball drop test. By using the measured data, Filtered-x Least Mean Square (Fx-LMS) algorithm-based ANC simulations were carried out. In the simulations, after deriving optimal simulation conditions including the adaptive control convergence coefficient, the noise reduction effect was analyzed through numerical simulations using the number of installed accelerometers and speakers as variables. Finally, it was confirmed that the noise between floors could be reduced using ANC technology under limited conditions.
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