| Title:
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Beamforming with a circular microphone array for localization of environmental noise sources |
| Type:
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Journal articleJournal article |
| Participant(s):
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Technical University of Denmark
Email:
Technical University of Denmark
Email:
Technical University of Denmark
Email:
|
| Abstract:
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It is often enough to localize environmental sources of noise from different directions in a plane.
This can be accomplished with a circular microphone array, which can be designed to have practically
the same resolution over 360. The microphones can be suspended in free space or they can
be mounted on a solid cylinder. This investigation examines and compares two techniques based on
such arrays, the classical delay-and-sum beamforming and an alternative method called circular
harmonics beamforming. The latter is based on decomposing the sound field into a series of circular
harmonics. The performance of the two signal processing techniques is examined using computer
simulations, and the results are validated experimentally. |
| Published:
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in journal: Acoustical Society of America. Journal (ISSN: 0001-4966) (DOI: http://dx.doi.org/10.1121/1.3500669), vol: 128, issue: 6, pages: 3535-3542, 2010 |
| DOI:
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