한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2000년도 추계학술대회논문집
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- Pages.726-730
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- 2000
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- 1598-2548(pISSN)
마이크로폰 측정 시 발생하는 산란파 간섭에 대한 경계요소 해석
Boundary Element Analysis of Interference Effect Due to Scattering in Microphone Measurement
- 발행 : 2000.11.16
초록
In this article, the scattering effect around a microphone is studied by using boundary element method, because it is hard to find the scattering experimentally. The scattering problem is defined by impinging an obstacle, i.e. a solid cylinder, with an incident plane wave. From this analysis, the scattering is numerically calculated by varying the microphone shape, the incident angle and the distance between microphones. It is found that the scattering effect of a microphone increases as the frequency increases and is not considerable in the low frequency region. However, it is noted that there might be the pressure distortion above 4 kHz due to the scattering in microphone measurement.
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