A device (20) for manipulating an incident acoustic wave to generate an acoustic output is described wherein the device comprises a plurality of unit cells arranged into an array, at least some of said unit cells being configured to introduce time delays to an incident acoustic wave at the respective positions of the unit cells within the array of unit cells, such that said plurality of unit cells define an array of time delays to thereby define a spatial delay distribution for manipulating an incident acoustic wave to generate an acoustic output (30). The array of time delays may be re-configured to vary the spatial delay distribution of the device in order to generate different acoustic outputs. Also described are methods for designing or configuring such devices.

A flexible acoustic waveguide device with a flexible, unitary band comprising a plurality of acoustic waveguides arranged side-by-side along a length of the band.

A flexible acoustic waveguide device with a flexible, unitary band comprising a plurality of acoustic waveguides arranged side-by-side along a length of the band.

A display device may include (i) a display panel, (ii) a housing surrounding at least a portion of the display panel, (iii) an audio trench peripherally surrounding at least a portion of the display panel, the audio trench including a trench opening in a front side of the housing between a frame region and a peripheral region, and (iv) at least one speaker driver disposed between the display panel and a back side of the housing, the at least one speaker driver including a sound radiating surface positioned to direct sound waves into an acoustic chamber defined between the at least one speaker driver and the display panel, wherein a chamber opening is located between a lateral periphery of the acoustic chamber and the audio trench. Various other systems, devices, assemblies, and methods are also disclosed.

The properties of metamaterials are derived both from the inherent properties of their constituent materials and from the geometrical arrangement of those materials. Metamaterials may be stacked or otherwise manipulated to transform substantially monochromatic signal into a second signal having a desired amplitude and phase. Metamaterials may be used with acoustic devices to create haptic feedback with desired properties or to transform the shape of certain devices. Metamaterials may be used in rotating devices with openings that transform a monochromatic signal into a non-monochromatic signal.

The properties of metamaterials are derived both from the inherent properties of their constituent materials and from the geometrical arrangement of those materials. Metamaterials may be stacked or otherwise manipulated to transform substantially monochromatic signal into a second signal having a desired amplitude and phase. Metamaterials may be used with acoustic devices to create haptic feedback with desired properties or to transform the shape of certain devices. Metamaterials may be used in rotating devices with openings that transform a monochromatic signal into a non-monochromatic signal.

The acoustic waveguide has a flexible metal rod with a cylindrical waveguide rigidly attached to each end of the same through a conical acoustic concentrator. One cylindrical waveguide is capable of being attached to an electroacoustic transducer and the other cylindrical waveguide is capable of being attached to an acoustic oscillation receiver. The structure provides for the enhanced functional capabilities of the acoustic waveguide by utilizing it in devices operating under conditions of high temperature, radiation, strong electromagnetic interferences and other negative factors.

The acoustic waveguide has a flexible metal rod with a cylindrical waveguide rigidly attached to each end of the same through a conical acoustic concentrator. One cylindrical waveguide is capable of being attached to an electroacoustic transducer and the other cylindrical waveguide is capable of being attached to an acoustic oscillation receiver. The structure provides for the enhanced functional capabilities of the acoustic waveguide by utilizing it in devices operating under conditions of high temperature, radiation, strong electromagnetic interferences and other negative factors.

A frame member is attached to an opening in an outer light-reflection plate. The frame member is composed of an inner frame part, and an outer frame part disposed around the inner frame part. A light extraction part is formed between the outer frame part and the inner frame part. The inner frame part is constituted by a separate extraction part that extracts acoustic vibrations and light. A space of the separate extraction part includes, on both ends, a sound intake port on an internal space side where a sound source is disposed, and a sound extraction port formed in the top of the inner frame part so as to open toward the outside of an LED illumination device. The sound intake port and the sound extraction port are formed separated from each other by a prescribed distance, and the space is formed continuously in the inner frame part so as to connect the sound intake port and the sound extraction port.

The present apparatus, method, and system utilize sound waves to suppress fires using metasurface lenses that can work in concert with detectors to amplify and optimize sound pressure level and thereby deprive a fire of needed oxygen. Metamaterial is utilized that manipulates the propagation of acoustic waves by its structural makeup rather than its interior chemical makeup, thereby adjusting the phasing of sound waves to form converging beams of constructive interference even after the waves exit the material, ultimately making long-range fire-extinguishing accomplishable.