Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Comparison of Transfer Function Method and Reverberation Room Method in Measuring the Sound Absorption Coefficient of Rice Straw Particle Mat

  • Kang, Chun-Won (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University) ;
  • Jang, Eun-Suk (Department of Housing Environmental Design, and Research Institute of Human Ecology, College of Human Ecology, Chonbuk National University) ;
  • Jang, Sang-Sik (Department of Forest Products, College of Agriculture & Life Sciences, Chungnam National University) ;
  • Kang, Ho-Yang (Department of Forest Products, College of Agriculture & Life Sciences, Chungnam National University)
  • Received : 2018.03.08
  • Accepted : 2018.07.06
  • Published : 2018.07.25
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Abstract

This study estimates the sound absorption capability of rice straw particle mats by two methods: the transfer function method and the reverberation room method. In the reverberation method, the central frequency was set to the one-third octave band in the 100-5000 Hz range; in the transfer function method, the frequency range was 500-6400 Hz. Both methods yielded similar noise reduction coefficients of the rice straw mats. The noise reduction coefficient was approximately 0.8, indicating a high sound-absorption property of the mats. Therefore, rice straw matting is a suitable candidate material for sound-barrier walls against highway noise.

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References

  1. Kang, C.-W., Lee, N.-H. 2005. Changes of sound absorption capability and anatomical features of wood by delignification treatment. Journal of the Korean Wood Science and Technology 33(4): 9-14.
  2. Kang, C.-W., Choi, I.-G., Gwak, K.-S., Yeo, H.-M., Lee, N.-H., Kang, H.-Y. 2012. Changes of sound absorption capability of wood by organosolv pretreatment. Journal of the Korean Wood Science and Technology 40(4): 237-243. https://doi.org/10.5658/WOOD.2012.40.4.237
  3. Kang, C.-W., Kang, W., Chung, W.-Y., Matsumura, J., Oda, K. 2008. Changes in anatomical features, air permeability and sound absorption capability of wood induced by delignification treatment. Journal of the Faculty of Agriculture, Kyushu University 53(2): 479-483.
  4. Kang, C.-W., Kim, G.-C., Park, H.-J., Lee, N.-H., Kang, W., Matsumura, J. 2010. Changes in permeability and sound absorption capability of yellow poplar wood by steam explosion treatment. Journal of the Faculty of Agriculture, Kyushu University 55(2): 327-332.
  5. Kang, C.-W., Lee, Y.-H., Kang, H.-Y., Kang, W., Xu, H.-R., Chung, W.-Y. 2011. Radial variation of sound absorption capability in the cross sectional surface of yellow poplar wood. Journal of the Korean Wood Science and Technology 39(4): 326-332. https://doi.org/10.5658/WOOD.2011.39.4.326
  6. Kang, C.-W., Oh, S.-W., Lee, T.-B., Kang, W., Matsumura, J. 2012. Sound absorption capability and mechanical properties of a composite rice hull and sawdust board. Journal of Wood Science 8: 273-278.
  7. Kim, C.-W., Chang, T.-C., Kim, D.-S. 2012. Characteristics Analysis of Highway Traffic Noise. Transactions of the Korean Society of Noise and Vibration Engineering 22(12): 1191-1198. https://doi.org/10.5050/KSNVE.2012.22.12.1191
  8. KS F 2805. 2014. Measurement of sound absorption in a reverberation room.
  9. KS F 2814-2. 2002. Acoustics-determination of sound absorption coefficient and impedance in impedance tubes-Part 2 : Transfer-function method