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Title: Tuned sound barriers

Abstract: A tuned sound barrier for machines which radiate sound primarily at a few constant, discrete frequencies includes an array of mechanical resonators distributed over the surface of a sound barrier. Each resonator of the array is tuned to present a high mechanical impedance to transmission of mechanical vibration at one of the discrete frequencies emitted by the source machine. The tuned sound barrier may be either a free-standing sound barrier or an attachment to a housing for the machine.


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Inventors: Holmes, David G. (Schenectady, NY)

Application Number: 06/105599
Filing Date: 1979-12-20
Publication_date: 1983-02-15
Assignee: GEN ELECTRIC

Primary Class(es): 181/202 181/208, 336/100, 181/286
Other Classes: G10K11/172; H01F27/33; H02K5/24; G10K11/00; H01F15/02; G10K11/16; H02K5/24; F16F7/00
US Patent Ref:
1758808May, 1930Sersen et al.181/284
2541159February, 1951Geiger52/144

Other Refs: CA675132DE2017438DE2229420
December, 1963181/202
November, 1971181/284
June, 1972181/208
Other References: J. P. Den Hartog, Mechanical Vibrations, 4th Edition, New York: McGraw--Hill Book Co., Inc., (1956), pp. 87-93.

Primary Examiner: Hix L. T.
Assistant Examiner: Tarcza, Thomas H.
Attorney: Bruzga, Charles E.
Davis Jr., James C.
Snyder, Marvin
Claims: