Magazine Article

Arrays of Miniature Microphones for Aeroacoustic Testing

TBMG-1168

02/01/2007

Abstract
Content

A phased-array system comprised of custom-made and commercially available microelectromechanical system (MEMS) silicon microphones and custom ancillary hardware has been developed for use in aeroacoustic testing in hard-walled and acoustically treated wind tunnels. Recent advances in the areas of multi-channel signal processing and beam forming have driven the construction of phased arrays containing ever-greater numbers of microphones. Traditional obstacles to this trend have been posed by (1) the high costs of conventional condenser microphones, associated cabling, and support electronics and (2) the difficulty of mounting conventional microphones in the precise locations required for high-density arrays. The present development overcomes these obstacles.

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Citation
"Arrays of Miniature Microphones for Aeroacoustic Testing," Mobility Engineering, February 1, 2007.
Additional Details
Publisher
Published
Feb 1, 2007
Product Code
TBMG-1168
Content Type
Magazine Article
Language
English