Experimental Study on Sound Diffraction over Barrier Using a Spark Discharge Sound Source

스파크 음원을 이용한 장벽의 회절음장에 관한 실험 연구

  • 주진수 (한일장신대학교 건축학부)
  • Published : 1999.06.01

Abstract

The prediction methods of diffraction field in barrier has beenreported much about the infinite length barrier and it is very few work that reasonable sound source was used in experiment. This study, however, has worked about the several model barrier with acoustic scale model experiment. In the case of scale model experiment, it is difficult to use the kind of source with sufficiently characteristics. A spark discharge sound source with the high repeatability, broad band spectra, small size and omnidirectivity has veen used for the prediction of diffraction field. Several model barriers with different length on the ground were considered for the experiment and compared with the the results calculated by the approximation.

Keywords

References

  1. J. Acoust. Soc. Jpn.(E) v.10 no.2 Scale Model Experiment on Room Acoustics by Hybrid Simulation Technique Y. Hidaka;H. Yano;H. Tachibana
  2. Proc. London Math. Soc. v.14 A Class of Diffraction Problems H. M. Macdaonald
  3. Electromagnetic and acoustic scattering by simple shapes J. J. Bowman;T. B. A. Senior;P. L. E. Uslenghi
  4. 騷音制御 v.15 前川チャ-トの數式表示について 山本貢平;高木興一
  5. 日本音響學會誌 v.39 Locally Reactingな境界面上の音の傳播に關する考察 川井孝雄
  6. Applied Acoustics v.3 Acoustical Properties of Fibrous Absorbent Materials M. E. Delany;E. N. Bazley
  7. Applied Acoustics v.1 Noise Reduction by Screen Z. Maekawa
  8. 日本音響學會誌 v.32 ナイフ又はエシヅをもつ種種の型の有限建造物による騷音減衰 湯澤睦茂
  9. Appled Acoustics v.13 A Computed Model for Predicting Sound Attenuation by Barrier Building Selma Kura
  10. U. S. DOT. FHWA Highway Traffic Noise Prediction Model HWA-RA-77-108
  11. 日本音響學會騷音硏究會資料, N-92-62 有限長障壁に對する回折效果の計算方法について 堀田龍太;山本貢平;高木興一