소음진동 (Journal of KSNVE)

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

홀로그래피를 이용한 실내 음장의 재구성에서 발생하는 수치 오차

Numerical Errors in Digital Holographic Reconstruction of Interior Sound Fields

  • 김영기 (한국과학기술원 기계공학과) ;
  • 김양한 (한국과학기술원 기계공학과)
  • 발행 : 1999.08.01
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초록

Digital holographic reconstruction method [W. A. Veronesi, et al, 1989, JASA, Vol. 85, pp. 588∼598] reconstructs a whole sound field by using measured sound pressure. This paper reports numerical errors of the method that occur at specific frequencies. The errors occur due to the truncation errors included in the calculation of transfer matrixes. The frequencies of the errors depend on the size of boundary element surfaces. Moreover, a modified calculation technique is proposed in the paper. The technique prevents the truncation errors by employing an indirect calculation procedure.

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참고문헌

  1. Solutions of Ill-posed Problems Tikhonov, A. N.;Arsenin, V. Y.
  2. J. Acoust. Soc. Am. v.85 Digital Holographic Reconstruction of Sources with Arbitrarily Shaped Surfaces Veronesi, W. A.;Maynard, J.D.
  3. J. of Acoust. Soc. Am. v.100 On the Reconstruction of the Vibro-Acoustic Field Over the Surface Enclosing an Interior Space Using the Boundary Element Method B.-K. Kim;J.-Gl Ih
  4. Theoretical Acoustics Morse, P. M.;Ingard, K. U.
  5. Boundary Element Methods in Acoustics Ciskowski, R. D.;Brebbia, C. A.
  6. J. of Sound and Vib. v.130 Boundary Element Analysis of Cavity Noise Problems with Complicated Boundary Conditionsn Suzuki, S.;Maruyama, S.;Ido, H.
  7. 한국소음진동공학회지 v.8 no.3 능동음원 및 벽면 어드미턴스의 재구성을 통한 실내 소음원의 정확한 규명 방법 김영기;김양한
  8. J. of Acoust. Soc. Am. v.105 Holographic Reconstruction of Active Source and Surface Admittance in Enclosure Kim, Y.-K.;Kim, Y.-H.
  9. Method of Theoretical Physics Morse, P. M.;Feshbach, H.
  10. Mechanical vibrations S. S. Rao
  11. AIAA Journal v.25 Prediction of Sound Fields in Caveties Using Boundary-Element Methods Bernhard, R. J.;Gardner, B. K.;Mollo, C. G.
  12. Formulas for Natural Frequency and Mode Shape Blevins, R. D.