A dry-stack masonry wall supported on hollow piles includes a wall having a plurality of stacked rows of masonry blocks that form a hollow interior grid of horizontal and vertical channels. The wall is supported on piles having hollow interiors, each of which is in communication with one of the vertical channels of the wall. Hardened grout filling the grid of the wall and the interiors of the piles monolithically binds the blocks into a wall which is bonded to and supported by the piles.

An example acoustic tile is disclosed having a structure with at least one layer. A plurality of openings are formed in the at least one layer of the structure. The openings are configured to direct sound waves hitting the structure in multiple different directions through the at least one layer to absorb a majority of the sound waves and inhibit the sound waves hitting the structure from reflecting off of the structure. In an example, the openings are juxtaposed, different sizes, different orientations, and/or different numbers of openings on separate layers.

An acoustic absorber includes a chamber formed from walls with a resistive portion providing the only communication between the chamber volume and ambient air. In some examples chamber walls enable selection or adjustment of chamber volume or resistive area, thereby altering the acoustic absorption spectrum below 250 Hz. In some examples the chamber volume contains fibrous filler material exhibiting no airflow resistance or acoustic absorption. Density and heat capacity of the fibrous filler material results in the chamber volume exhibiting compressibility of air within the chamber, for at least acoustic frequencies up to about 50 Hz, that is larger than adiabatic compressibility of air. That larger compressibility results in an increased acoustic absorption coefficient, for at least acoustic frequencies up to about 50 Hz, 50% to 100% larger than that of an identical chamber entirely characterized by the adiabatic compressibility of air.

A sound absorber can include a housing including a back wall, a perimeter wall, and an interior wall that form cells having cavities. The sound absorber can also include a panel disposed on the housing that substantially faces the back wall and encloses the cavities of the cells. The panel can define groups of holes for each cell such that one group of holes extend though the panel to the cavity of one cell and another group of holes extend through the panel to the cavity of another cell.

The shape of an attachment (3a to 3d) is a one-fold shape, which is inscribed in a rectangle, or an integer-fold shape, which is inscribed in sides of a shape formed by an integer number of rectangles arranged side by side. Covers include a one-fold cover (2a), which has a size that allows the cover to be attached to a one-fold attachment (3a) or an integer-fold cover (2b to 2d), which has a size that allows the cover to be attached to an integer-fold attachment (3b to 3d). Variations of a design pattern formed by a plurality of covers can be provided by attaching the one-fold cover (2a) to the one-fold attachment (3a), attaching the integer-fold cover (2b to 2d) to an integer number of one-fold attachments (3a), or attaching the integer-fold cover (2b to 2d) to the integer-fold attachment (3b to 3d).

An acoustic panel (for absorbing sound) includes a first sheet with spaced microperforations, a second sheet with microperforations more widely spaced than the microperforations of the first sheet, and a first cellular core sandwiched between the first sheet and the second sheet. The panel can be spaced from a surface, such as a wall. A second cellular core can be provided between the second sheet and a third sheet. The third sheet is preferably solid without microperforations but can have microperforations. Noise Reduction Coefficient (NRC) can be 0.8.

A soundproof structure includes a porous fibrous body that attenuates incident sound waves, wherein the fibrous body is formed of fibers having an average fiber diameter of 0.5 μm or more and 5 μm or less, and includes a surface layer on which the sound waves are incident and a propagation layer that is stacked with the surface layer and that propagates the sound waves from the surface layer, and wherein the propagation layer includes a high density layer having a density higher than a density of the surface layer.

The present invention is a thermal and acoustic insulating sphere that has an evacuated hollow interior. The spheres are constructed of insulating materials, and the inner and outer surfaces of each sphere have highly reflective coatings evenly applied to them. The coatings applied to the inner and outer surfaces reduce the transmission of heat by conduction, convection, and radiation. Additionally, the spheres provide superior acoustic insulation due to the inability of sound to travel through the interior vacuum. The spheres can be used to produce insulating materials, for example, by embedding or positioning them within or between other materials, to provide thermal and acoustic insulation.

The present invention generally relates to a precision dry-stack masonry unit made of two spaced-apart face shells and at least one connector joining the face shells. The connector has a top surface, a right surface and a left surface. The top surface of the connector and the face shells form a horizontal channel above the connector, and the right surface and the left surface of the connector and the face shells form vertical channels to each side of the connector. Each of the channels is configured to accommodate one or more reinforcement bars.

A soundproof member is provided. The soundproof member includes a structural element, and a first composite film which is disposed on the bottom surface of the structural element. The structural member includes at least one through hole and the through hole passes through the structural element. The first composite film includes a polymer material and an inorganic nanoscale material, wherein the inorganic nanoscale material is a one-dimensional inorganic nanoscale material or a two-dimensional inorganic nanoscale material.