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AssigneeHRL Laboratories, LLC
InventorsGeoffrey P. McKnight, Christopher P. Henry, Chia-Ming Chang, Andrew C. Keefe
Estimating the term…
In one embodiment, provided is an actively tunable acoustic attenuator having a frame, a membrane within the frame, and a mass secured to the membrane. In another embodiment, provided is an actively tunable acoustic attenuator having a frame, a membrane within the frame, and a mass secured to the membrane. The membrane is coupled, either indirectly or directly, to the frame via a variable stiffness coupler. In another embodiment, provided is an actively tunable acoustic attenuator having a frame and a plurality of membrane layers within the frame. An active material is between at least two of the plurality of membrane layers. A mass is secured to at least one of the plurality of membrane layers.
An actively tunable acoustic attenuator comprising:
An actively tunable acoustic attenuator comprising:
An actively tunable acoustic attenuator comprising:
An actively tunable acoustic attenuator comprising:
An actively tunable acoustic attenuator comprising:
Dependencies are inferred from the claim text.