Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)

The Acoustical Society of Korea (한국음향학회)
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Noise Barrier Design for Increased Sound Absorption

흡음률 증가를 위한 방음벽 구조

  • Kim Hyun-Sil (Korea Institute of Machinery and Materials, Acoustics Lab.,) ;
  • Kim Jae-Seung (Korea Institute of Machinery and Materials, Acoustics Lab.,) ;
  • Kang Hyun-Joo (Korea Institute of Machinery and Materials, Acoustics Lab.,) ;
  • Kim Bong-Ki (Korea Institute of Machinery and Materials, Acoustics Lab.,) ;
  • Kim Sang-Ryul (Korea Institute of Machinery and Materials, Acoustics Lab.,)
  • 김현실 (한국기계연구원 음향연구그룹) ;
  • 김재승 (한국기계연구원 음향연구그룹) ;
  • 강현주 (한국기계연구원 음향연구그룹) ;
  • 김봉기 (한국기계연구원 음향연구그룹) ;
  • 김상렬 (한국기계연구원 음향연구그룹)
  • Published : 2001.11.01
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Abstract

Various shapes of the noise barrier frame and construction of the sound absorbing panels are studied. It is found that insertion of the sound absorbing panel into barrier frame results in the decrease of the sound absorption coefficient, while the empty frame shows a peak around 250Hz. Using double sound absorbing panels with air gap can increase sound absorption coefficient up to NRC 0.85.

Keywords