• 제목/요약/키워드: Eauivalent Source Height

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차량소음의 등가소음높이 측정을 위한 마이크로폰 배열 설계 (Microphone Array Design for Measurement of the Equivalent Source Height of Vehicle Noise)

  • 윤종락;배민자
    • 소음진동
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    • 제5권2호
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    • pp.197-206
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    • 1995
  • Microphone array is designed to measure the equivalent source height of vehicle noise. The equivalent source position is defined for an arbirary distribution of acoustic sources above a perfectly reflecting plane and a microphone array for its measurement is developed. The normalized errors of the measured equivalent source heights are defined including the effects of background noise, the geometric near field, and source size. Normalized errors of the measured source heights obtained by a nemerical simulation for each parameter lead to optimization of the microphone spacing and to the design of an array which gives the equivalent source height as a function of frequency. The performance of the designed array is verified using the stationary loudspeaker experiments.

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