Abstract
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 language | English |
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Journal | Journal of the Acoustical Society of America |
Volume | 130 |
Issue number | 3 |
Pages (from-to) | 1095 |
ISSN | 0001-4966 |
DOIs | |
Publication status | Published - 2011 |
Keywords
- Shapes (structures)
- Microphone arrays
- Array signal processing
- Acoustic signal processing
- Acoustic radiators