Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Analysis of Applicability of Active Noise Control (ANC) technique for Reducing Inter-Floor Noise in Apartment Buildings

공동주택 층간소음 저감을 위한 능동소음제어(ANC) 기술 적용가능성 분석

  • 남진원 (인하공업전문대학 건설환경공학과) ;
  • 김호진 ((주)에이테크솔루션) ;
  • 김준환 ((주)크리에이티브솔루션) ;
  • 위혁 ((주)에이알이) ;
  • 김중관 (한서대학교 무인항공기학과)
  • Received : 2022.08.20
  • Accepted : 2022.09.14
  • Published : 2022.10.30
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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.

본 연구에서는 능동소음제어(ANC, Active Noise Control) 기술을 이용하여 공동주택의 층간소음을 저감시키는 시뮬레이션 기반 연구를 수행하였다. ANC의 층간소음 저감 활용 가능성을 검토하기 위하여 층간소음시험시설에서 가속도계와 소음 수집용 마이크로폰을 설치하여 임팩트볼 낙하에 의한 소음진동을 측정하여 Fx-LMS 알고리즘 기반의 능동소음제어 시뮬레이션을 수행하였다. 이 과정에서 적응제어 수렴계수 등의 최적 시뮬레이션 조건을 도출한 후 가속도계와 스피커 수량을 변수로 하는 수치 시뮬레이션을 통해 소음저감효과를 분석하여 제한된 조건에서 층간소음을 저감시킬 수 있는 것을 확인하였다.

Keywords

Acknowledgement

본 연구는 국토교통부의 국토교통기술사업화지원사업[과제번호 : 21TBIP-C161155-01]을 통해 수행되었습니다.

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