Journal of KSNVE (소음진동)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Microphone Array Design for Measurement of the Equivalent Source Height of Vehicle Noise

차량소음의 등가소음높이 측정을 위한 마이크로폰 배열 설계

  • 윤종락 (부산수산대학교, 정보통신공학과) ;
  • 배민자 (부산수산대학교 전자공학과)
  • Published : 1995.06.01
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Abstract

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.

Keywords

References

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