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Time Matching Localization of Impulse Sounds in High-Building, Non-Line-of-Sight Configurations

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The time matching method aims at localizing an impulse sound source with distributed sensors, and is known to perform well in presence of low buildings. The present study addresses the performance of this method in presence of higher buildings with mostly non-line-of-sight sensors. A laboratory-scale model of an urban block-size area is introduced and used to generate a statistically-representative database of localization tests based on measurements. The time matching approach is found to be very reliable in localizing an impulse source in the tested moderately high to high building configurations, with down to five sensors. The transposition of these results to real urban configurations is carefully discussed. The present method performs best with a three-dimensional modeling of the building height and of the sound propagation. It is shown that some simple approximations on the building height may lead to acceptable localization results only in particular environments. Finally, a confidence level for each localization prediction is introduced and satisfactorily tested.
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Document Type: Research Article

Publication date: November 1, 2016

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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