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Sound attenuation apparatusAn apparatus is disclosed for reducing acoustic transmission from mechanical or acoustic sources by means of a double wall partition, within which an acoustic pressure field is generated by at least one secondary acoustic source. The secondary acoustic source is advantageously placed within the partition, around its edges, or it may be an integral part of a wall of the partition.
Document ID
19910018599
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Shepherd, Kevin P. (Planning Research Corp. Hampton, VA., United States)
Grosveld, Ferdinand M. W. A. (Planning Research Corp. Hampton, VA., United States)
Date Acquired
August 14, 2013
Publication Date
June 18, 1991
Subject Category
Acoustics
Report/Patent Number
Patent Number: US-PATENT-5,024,288
Patent Number: NASA-CASE-LAR-13968-1
Patent Application Number: US-PATENT-APPL-SN-392165
Accession Number
91N27913
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,024,288|NASA-CASE-LAR-13968-1
Patent Application
US-PATENT-APPL-SN-392165

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