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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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A Study on the Indoor Sound-field Analysis by Adaptive Triangular Beam Method

적응 삼각형 빔 방법에 의한 실내음장 해석

  • 조대승 (부산대학교 조선해양공학과) ;
  • 성상경 (부산대학교 대학원 조선해양공학과) ;
  • 김진형 (부산대학교 대학원 조선해양공학과) ;
  • 최재호 (선보공업 부설연구소) ;
  • 박일권 (국방과학연구소)
  • Published : 2003.03.01
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Abstract

In this study, the adaptive triangular beam method(ATBM) considering different sound reflection coefficients and angles of a triangular beam on two or more planes as well as diffraction effect is suggested. The ATBM, subdividing a tracing triangular beam into multiple triangular beams on reflection planes, gives reliable and convergent sound-field analysis results without the dependancy on the number of initial triangular beam segmentation to search sound propagation paths from source to receiver. The validity of the method is verified by the comparison of numerical and experimental results for energy decay curve and steady-state sound pressure level of rooms having direct, reflective and diffractive sound paths.

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References

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