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ICASSP
2009
IEEE

Plane-wave decomposition of a sound scene using a cylindrical microphone array

10 years 4 months ago
Plane-wave decomposition of a sound scene using a cylindrical microphone array
The analysis for microphone arrays formed by mounting microphones on a sound-hard spherical or cylindrical baf e is typically performed using a decomposition of the sound field in terms of orthogonal basis functions. An alternative representation in terms of plane waves and a method for obtaining the coefficients of such a representation directly from measurements was proposed recently for the case of a spherical array. It was shown that representing the field as a collection of plane waves arriving from various directions simplifies both source localization and beamforming. In this paper, these results are extended to the case of the cylindrical array. Similarly to the spherical array case, localization and beamforming based on plane-wave decomposition perform as well as the traditional orthogonal function based methods while being numerically more stable. Both simulated and experimental results are presented.
Dmitry N. Zotkin, Ramani Duraiswami
Added 21 May 2010
Updated 21 May 2010
Type Conference
Year 2009
Where ICASSP
Authors Dmitry N. Zotkin, Ramani Duraiswami
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