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http://dx.doi.org/10.5050/KSNVN.2002.12.7.520

Source Identification in an Interior Sound Field  

김양한 (한국과학기술원 기계공학과)
최영철 (한국과학기술원 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.12, no.7, 2002 , pp. 520-526 More about this Journal
Abstract
Identification of noose sources, their locations and strengths, has been taken great attention. The methods that can identify noise sources normally assume that noise sources are located in a free field. However, the sound in a reverberant field consists of that coming directly from the source plus sound reflected or scattered by the walls or objects in the field. In contrast to the exterior sound field. reflections are added to sound field. Therefore, we haute to consider the reverberation effect on the source identification method. The main objective of this paper is to identify noise source in the reverberant field. At fist, we try to identify noise sources in a rigid wall emc;psire using the beamforming method. In many cases of practical interest, the wall has admittance so that random reflections occur in an enclosure. In this paper, we assumed the complex reverberant field in the enclosure to be the sum of plane caves with random Incidence and magnitude. Then we try to explain effects of reverberant field at interior source identification.
Keywords
Source Identification; Reverberant Field; Beamforming Method; Scan Vector;
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  • Reference
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