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

  • 2007.05a
  • /
  • Pages.61-64
  • /
  • 2007
  • /
  • 1598-2548(pISSN)
The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지

Study on method of build up low-frequency diffuse sound field in a scaled reverberation chamber

축소잔향실의 저주파수 확산음장 형성 방법에 대한 연구

  • 강준구 (충남대학교 항공우주공학과 대학원) ;
  • 강현주 (한국기계연구원 음향/소음팀) ;
  • 김상렬 (한국기계연구원 음향/소음팀) ;
  • 최종수 (충남대학교 항공우주공학과)
  • Published : 2007.05.10
Download PDF
⟨ Previous Next ⟩

Abstract

This study is dealt with a method to enhance low-frequency diffuse sound field in a scaled reverberation chamber. Because scaled reverberation chamber has not enough room volume, as a result, it shows a few room modes. So it is not build up low-frequency diffuse sound field. A Helmholtz resonator's arrangement is used to improve spatial uniformity of sound pressure at low frequency. The spatial distribution of sound field has been measured before and after control. The standard deviation of sound field has decreased at 315Hz 1/3 Octave band.

Keywords