반사파가 존재하는 실내 공간에서의 음원 탐지 방법Source Identification in an Interior Sound Field

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Identification of noise sources, their locations and strengths, have been taken great attention. The method that can identify noise sources normally assumes that noise sources are located at 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 have 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 enclosure using the spherical beamforming method. In many case of practical interest, the wall has an admittance so that complex reflection process occurred. In this paper, we assumed the complex reverberant field in the enclosure to be the sum of plane waves with random incidence and magnitude. Then the effects of reverberant field at interior source identification have been studied theoretically as well as experimentally
Publisher
한국소음진동공학회
Issue Date
2001
Language
KOR
Citation

한국소음진동공학회 2001 춘계학술대회, pp.1203 - 1209

URI
http://hdl.handle.net/10203/137310
Appears in Collection
ME-Conference Papers(학술회의논문)
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