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Monday, July 8 • 17:30 - 17:50
CANCELLED: SPARSE PLANE-WAVE DECOMPOSITION USING A PLANAR MICROPHONE ARRAY

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Sound field analysis based on plane-wave decomposition has been widely used in various applications. Spherical microphone arrays are usually required in three-dimensional sound field analysis; however, one of the drawbacks of the spherical arrays is the three-dimensional geometry which hinders the development of the microphone arrays for practical applications. This paper proposes a sparse plane-wave decomposition method to analyze the three-dimensional sound field with a two-dimensional planar microphone array instead of a spherical array. And this method is based on spherical harmonic decomposition. Both omni-directional and differential microphones are used to capture the three-dimensional sound field on a plane, which achieves the same function as spherical arrays. When the sound field is dominated by a set of plane waves, the plane-wave decomposition problem can be solved under the compressed sensing framework. Simulation results demonstrate that the proposed planar array has good reconstruction performance for plane wave sound fields. Thus the proposed method improves the feasibility of three-dimensional sound field analysis and direction-of-arrival estimation in practice.

Moderators
TP

Thomas Padois

PhD, ÉTS

Authors

Monday July 8, 2019 17:30 - 17:50 EDT
Westmount 3
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