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Keywords: microphone arrays
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2011, 133(8): 081201.
Published Online: April 7, 2011
... ranging from 0.09 to 4.0. The far-field acoustic noise is measured by a linear microphone array covering polar angles from 25 deg to 80 deg relative to the jet axis. In both jets, the lower forcing azimuthal modes ( m = 0 and 1) are less effective than the higher modes ( m = 2 , 3, and ± 4 ), which have...