한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2004년도 추계학술대회논문집
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- Pages.561-564
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- 2004
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- 1598-2548(pISSN)
낮은 상관 관계를 갖는 자동차 공력 소음에 대한 음향 홀로그래피
Application of Acoustic Holography to Automobile Aeroacoustic Noise of Low Coherence
초록
Acoustic holography is applied to automobile aeroacoustic noise. Automobile aeroacoustic noise has low coherence due to multiple independent sources and measurement noise. This paper discusses the reliability of acoustic holography on this low coherence condition. Main subjects are the number and position of reference microphones, which is used for a step-by-step scanning method, and measurement noise. A real automobile experiment verifies the results.