| Three dimensional sound source localization and sound mapping using a p-u sensor array. | |
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MedLine Citation:
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PMID: 20330528 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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An acoustic sensor array, which consists of pressure and particle velocity sensors, is an attractive alternative to phased pressure array because knowledge of the three dimensional (3-D) particle velocity directly characterizes the direction of the source. Hence, it is possible to localize sources in the low-frequency range, where the phase difference between pressure sensors is small, and in the high-frequency range, where aliasing occurs with pressure sensors. This article applies advanced source localization techniques from aeroacoustics to acoustic vector sensors. Several methods are simulated and tested with several configurations and validated using measurement data from an anechoic chamber. The setup to test the algorithms consists of 24 sources that are distributed in 3-D around the set ups in the anechoic chamber. The sources are uncorrelated driven with white noise. Conventional beamforming methods have been compared with acoustic vector based deconvolution methods and MUSIC algorithms. Four configurations are tested: (1) a planar array of sound pressure microphones, (2) a planar array of pu probes (pu probes are collocated sound pressure and particle velocity probes); the velocity probes where the velocity probes are oriented in randomly, (3) a velocity gradient array, (4) a quad array of three dimensional velocity probes plus collocated sound pressure. The different methods and algorithms. |
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Authors:
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Jelmer Wind |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 127 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1857 Citation Subset: IM |
Affiliation:
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Microflown Technologies B.V., 6800AH Zevenaar, The Netherlands, wind@microflown.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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