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Active noise control system
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Patent number 11,501,748
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Issue date Nov 15, 2022
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Alpine Electronics, Inc.
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Ryosuke Tachi
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Active foam for noise and vibration control
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Patent number 5,719,945
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Issue date Feb 17, 1998
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Noise Cancellation Technologies, Inc.
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Christopher R. Fuller
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Sound attenuation apparatus
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Patent number 5,024,288
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Issue date Jun 18, 1991
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The United States of America as represented by the administrator of the Natio...
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Kevin P. Shepherd
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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Noise cancellation apparatus
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Patent number 4,025,724
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Issue date May 24, 1977
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Westinghouse Electric Corporation
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Allen R. Davidson
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G10 - MUSICAL INSTRUMENTS ACOUSTICS