Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Indentification of Coherent/Incoherent Noise Sources Using A Microphone Line Array

독립, 비독립 음원이 동시에 존재할 경우 선형 마이크로폰 어레이를 이용한 소음원 탐지 방법

  • 김시문 (한국과학기술원, 기계공학과) ;
  • 김양한 (한국과학기술원, 기계공학과)
  • Published : 1996.12.01
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Abstract

To identify the locations and strengths of acoustic sources, one may use a microphone line array. Apparent advantage of the source identification method utilizing a line array is that it requires less measurement points than intensity method and holography. This method is based on the information of magnitude and phase difference between pressure signals at each microphone. Since those differences are dependent on the source model, we have to assume them such as plane, monopole, etc. In this paper the conventional source identification methods such as beamforming method and MUSIC method are briefly reviewed by modeling a source as plane and spherical wave, then a modified method is introduced. This can be applied to sound field which may by either coherent or incoherent. Typical simulations and experiment are performed to confirm this identification method.

Keywords

References

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