Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)

  • 2007.11a
  • /
  • Pages.1125-1128
  • /
  • 2007
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Estimation Method of Noise Reducing Devices Installed on the Noise Barrier(2) - Estimation by Sound Pressure Level -

방음벽 상단소음저감장치의 성능평가 방법에 관한 연구(2) - 음압레벨에 의한 평가 -

  • 김철환 (한국도로공사 도로교통기술원) ;
  • 장태순 (한국도로공사 도로교통기술원) ;
  • 이기정 (한국도로공사 도로교통기술원) ;
  • 김동준 (한국도로공사 도로교통기술원) ;
  • 정태량 (한국도로공사 도로교통기술원) ;
  • 장서일 (서울시립대 환경공학과) ;
  • Published : 2007.11.15
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Abstract

In order to improve the acoustic performance of a noise barrier without increasing its height, various type of acoustic devices are suggested but, there is no proper method to estimate the performance in Korea. For this, an outdoor test facility was established in Expressway and Transportation Technology Institute(ETTI) of Korea Expressway Corporation for testing the acoustical performance of noise reducing devices installed on the top of a noise barrier. Noise measurements before and after installation of the noise reducing devices were carried out by using sound pressure level for long distance range from the barrier, from 10m to 40m. For considering the directivity effects of noise reducing devices, multivariate regression analysis was attempted.

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