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Estimation of the Sound Absorption Performance for Multiple Layer Perforated Plate Systems by Transfer Matrix Method

전달행렬법을 이용한 다중 다공판 시스템의 흡음성능 예측

  • 이동훈 (서울산업대학교 기계공학과) ;
  • 허성춘 (서울산업대학교 산업대학원 기계공학과) ;
  • 권영필 (숭실대학교 기계공학과)
  • Published : 2002.09.01

Abstract

A practical method of predicting the sound absorption coefficient for multiple perforated-plate sound absorbing system was developed using transfer matrix method. The proposed method was validated by comparing the calculated absorption coefficients of a single layer perforated plate with the values measured by the two-microphone impedance tube method for various porosity and spacing of the perforated plate. The developed transfer matrix method was further applied to estimate the multiple layer perforated plates and it is shown that the estimated absorption coefficients agree well with the measured values.

Keywords

References

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