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High-directivity acoustic antennaAcoustic antenna with unique electronic steering control is used to identify and define aerodynamic noise sources in free field, particularly in wind tunnel which is quite reverberant. Provision is made for high directivity as well as improved discrimination against unwanted background noise such as reverberation or echoes.
Document ID
19740000050
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
El-Sum, H. M. A. (EL-Sum Consultants)
Date Acquired
August 7, 2013
Publication Date
May 1, 1974
Subject Category
Electronic Systems
Report/Patent Number
ARC-10789
Report Number: ARC-10789
Accession Number
74B10050
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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