Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Sound Absorption Coefficient by Varying Sample Size

시편의 크기에 따른 흡음계수 변화 연구

  • 정성수 (한국표준과학연구원 음향진동그룹) ;
  • 이우섭 (한국표준과학연구원 음향진동그룹) ;
  • 조문재 (한국표준과학연구원 음향진동그룹) ;
  • 서상준 (한국표준과학연구원 음향진동그룹)
  • Published : 2001.08.01
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Abstract

The sound absorption coefficient of glass wool (bulk density of 48 kg/m:1 and 32 kg/m7) was measured by reverberation room method as varying their cross-sectional area. The results show that the absorption is larger for smaller samples because of edge effect. The absorption coefficient with two different kinds of sources. 1/.7-octave band and while noise, gives similar values.

Keywords

References

  1. Inetnational Standard ISO 354 Acoustics - Measurement of Sound Absorption in a Reverberation Room
  2. 잔향실 내의 흡음률 측정방법
  3. Acustica v.70 The Influence of the Edge Effect on the Statistical Absorption Coefficient W. Lauriks;A. Cops;Ph. Belien