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Measurement of Sound Transmission Loss in a Sound Barrier Filled with the Rice-Straw Particles by the Transfer Function and Laboratory Measurement Methods

  • 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 : 2018.07.02
  • Published : 2018.07.25

Abstract

The sound insulation capacity of a barrier is indicated by its transmission loss. In this study, the sound transmission loss of a sound barrier filled with rice-straw particles was measured by the transfer function method and a laboratory measurement method. The results of the two measurements were compared. The transmission losses measured by the two methods were similar above a frequency of 500 Hz. The loss increased greatly upon the introduction of a plywood to the sound barrier. The results of this study are expected to be used to design sound barriers for roads.

Keywords

References

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