Abstract: Systems, methods, and apparatuses to treat subjective tinnitus is disclosed herein. A series of short, self-administered treatments with the apparatus may lessen or eliminate the subjective perception of tinnitus in the majority of individuals. The apparatus that delivers the treatment may include four bone conductors, two for each ear delivering sound to the inner ear via bone conduction. Each ear receives low frequency tones between fifty and one-hundred-and-ten hertz high frequency tones between six-thousand and ten-thousand hertz. The low frequency tones and high frequency tones may be all delivered slightly above an auditory threshold intensity. The apparatus may be self-contained, rechargeable and controllable via mobile phone application. The method of treatment may involve programmed sessions lasting one to fifteen minutes.

Abstract: The present invention features a metamaterial including a plurality of unit cells, in which each unit cell includes two interacting members to dissipate energy. Also provided herein are assemblies including such metamaterials and methods of manufacture.