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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
권호 표지
DOI QR코드

DOI QR Code

Sound Reduction Index of Interior Door by Aperture Sizes at Door's Bottom

하부틈새 크기에 따른 도어의 음향감쇠계수 분석

  • 김명준 (서울시립대학교 건축학부)
  • Received : 2010.07.29
  • Accepted : 2010.08.23
  • Published : 2010.09.20
Download PDF
⟨ Previous Next ⟩

Abstract

The Sound reduction indices(SRIs) of interior door with 13 different size apertures are measured in acoustic chamber. Also, as a theoretical approach, the SRIs are estimated using Gomperts' theory. In this study, the aperture of interior door is focused on the lower part of door leaf which is well known as a main cause to deteriorate the sound insulation performance of door. The results show that the SRI of door strongly depends on the aperture width and the dip in the measured sound reduction index curve by the resonance effect within aperture is observed at high-frequency. On the whole, the values calculated by theory are in good agreement with the measured values including the position of resonance dip. The average difference between the measured and the calculated values is 0.9 dB for 13 doors with different size aperture in terms of the weighted SRI.

Keywords

References

  1. An, J. H., Kim, M. J., Cho, C. G. and Lee, M. J., 2008, “Effect on the Sound Insulation Performance of Flush Doors by Aperture Conditions between Door and Doorsill,” 15th International Congress on Sound and Vibration(ICSV15), Daejeon, pp. 2635-2642.
  2. Gomperts, M. C., 1964, “The Sound Insulation of Circular and Slit-shaped Apertures,” Acustica, Vol. 14, pp. 1-16.
  3. Wilson, G. P. and Soroka, W. W., 1965, “Approximation to the Diffraction of Sound by a Circular Aperture in a Rigid Wall of Finite Thickness,” Journal of Acoustic Society America, Vol. 37, pp. 286-297. https://doi.org/10.1121/1.1909325
  4. Sauter, A. and Soroka, W. W., 1970, “Sound Transmission through Rectangular Slots of Finite Depth between Reverberant Rooms,” Journal of Acoustic Society America, Vol. 47, pp. 5-11. https://doi.org/10.1121/1.1911442
  5. Mechel, F. P., 1986, “The Acoustic Sealing of Holes and Slits in Walls,” Journal of Sound and Vibration, Vol. 111, pp. 297-336. https://doi.org/10.1016/S0022-460X(86)80163-8
  6. Gomperts, M. C. and Kihlman, T., 1967, “The Sound Transmission Loss of Circular and Slit-shaped Apertures in Walls,” Acustica, Vol. 18, pp. 144-150.
  7. Hongisto, V., Keränen, J. and Lindgren, M., 2000, “Sound Insulation of Doors -Part 2: Comparison between Measurement Results and Predictions,” Journal of Sound and Vibration, Vol. 230, pp. 149-170. https://doi.org/10.1006/jsvi.1999.2610
  8. Kang, H. J., Kim, J. S., Kim, H. S. and Kim, S. R., 2001, “Influence of Sound Leaks on in situ Sound Insulation Performance,” Noise Control Engineering Journal, Vol. 49, No. 3, pp. 113-119. https://doi.org/10.3397/1.2839646
  9. Kim, M. J. and An, J. H., 2009, “Effect of Slit-shaped Apertures on Sound Insulation Performance of Building Elements,” Noise Control Engineering Journal, Vol. 57, No. 5, pp. 515-523. https://doi.org/10.3397/1.3197859
  10. Han, H. S., Jung, W. S. and Mo, J. Y., 2008, “Evaluation for the Capability of the Sound Insulation and Experimental Analysis for the Improvement of Sound Insertion Loss of the Air Conditioner-cabinet Considering the Thickness and Aperture of Partition,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 18, No. 2, pp. 263-271. https://doi.org/10.5050/KSNVN.2008.18.2.263
  11. KS F 2808, 2001, “Laboratory Measurements of Airborne Sound Insulation of Building Elements,” (ISO 140-3 : 1995).
  12. KS F 2862, 2002, “Rating of Airborne Sound Insulation in Buildings and of Building Elements,” (ISO 717-1 : 1996).
  13. Hopkins, C., 2007, Sound Insulation, Elsevier Ltd., Chapter 4.

Cited by

  1. A Study on Field Evaluation and Sound Insulation Improvement of Door vol.23, pp.11, 2013, https://doi.org/10.5050/KSNVE.2013.23.11.1012