Beamforming with a circular array of microphones mounted on a rigid sphere (L)

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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Beamforming with uniform circular microphone arrays can be used for localizing sound sources over 360. Typically, the array microphones are suspended in free space or they are mounted on a solid cylinder. However, the cylinder is often considered to be infinitely long because the scattering problem has no exact solution for a finite cylinder. Alternatively one can use a solid sphere. This investigation compares the performance of a circular array mounded on a rigid sphere with that of such an array in free space and mounted on an infinite cylinder, using computer simulations. The examined techniques are delay-and-sum and circular harmonics beamforming, and the results are validated experimentally.
Original languageEnglish
JournalJournal of the Acoustical Society of America
Publication date2011
Volume130
Issue3
Pages1095
ISSN00014966
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 2

Keywords

  • Shapes (structures), Microphone arrays, Array signal processing, Acoustic signal processing, Acoustic radiators
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