The Journal of the Acoustical Society of Korea

The Acoustical Society of Korea (한국음향학회)
권호 표지

A Study on Tunneling Effect in Sound Transmission Loss Measurement

차음성능 측정시 터널링 효과에 관한 연구

  • Published : 2004.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

This study is aimed to evaluate a tunneling effect in the laboratory measurement of sound transmission loss. Based on the formulation for sound transmission loss of a finite panel in the presence of tunnel, variations of the sound transmission loss with the parameters of panel location and tunnel depth are investigated. In comparison with the transmission loss of a finite plate in an infinite rigid baffle, the maximum difference occurs in the laboratory measurement when the panel is placed at the center of the tunnel, while a better estimation of true transmission loss is obtained when the panel is located at either end.

Keywords

References

  1. J. R. Callister, A. R. George, G. E. Freeman, 'An empirical scheme to predict the sound transmission loss of single thickness panels,' J. Sound Vib. 222,145-151,1999 https://doi.org/10.1006/jsvi.1998.1624
  2. H. -J. Kang, J. -G. lh, J. S. Kim, and H. S. Kim, 'Prediction of sound transmission loss through multilayered panels by using Gaussiandistribution of directional incident energy,' J. Acoust. Soc. Am. 107,1413-1420,2000 https://doi.org/10.1121/1.428428
  3. ISO 140-2:1991 'Acoustics Measurement of sound insulation in buildings and building elements Part 2: Determination, verification and application of precision data'
  4. B. Rasmussen, 'Repeatability and reproducibility of sound insulation measurements,' Danish Acoustical Institute Technical report 118, 1984
  5. T. Kihlman and A. C. Nilsson, 'The effects of some laboratory designs and mounting conditions on reduction index measurements,' J. Sound Vib. 24, 349-364, 1972 https://doi.org/10.1016/0022-460X(72)90749-3
  6. R. E. Jones, 'Intercomparisons of laboratory determinations of airborne sound transmission loss,' J. Acoust. Soc. Am. 66,148-164,1979 https://doi.org/10.1121/1.383068
  7. E. C. Sewell, 'Transmission of reverberant sound through a single-leaf partition surrounded by an infinite rigid baffle,' J. Sound Vib. 12, 21-32,1970 https://doi.org/10.1016/0022-460X(70)90046-5
  8. A. C. Nilsson, 'Reduction index and boundary conditions for a wall bgtween two rectangular rooms. Part I: Theoretical results,' Acustlca 26,1-18,1972
  9. T. J. Schultz, 'Diffusion in reveiberation rooms,' J. Sound Vib. 16,17-28,1971 https://doi.org/10.1016/0022-460X(71)90392-0