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Noise Source Localization by Applying MUSIC with Wavelet Transformation  

Cho, Tae-Hwan (DAS)
Ko, Byeong-Sik (Autoeversystems)
Lim, Jong-Myung (Autoeversystems)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.2, 2008 , pp. 18-28 More about this Journal
Abstract
In inverse acoustic problem with nearfield sources, it is important to separate multiple acoustic sources and to measure the position of each target. This paper proposes a new algorithm by applying MUSIC(Multiple Signal Classification) to the outputs of discrete wavelet transformation with sub-band selection based on the entropy threshold, Some numerical experiments show that the proposed method can estimate the more precise positions than a conventional MUSIC algorithm under moderately correlated signal and relatively low signal-to-noise ratio case.
Keywords
Wavelet; MUSIC(Multiple Signal Classification); Discrete wavelet transform; Entropy; Noise source localization;
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