A perforated acoustic panel for mounting to a wall and/or a ceiling, including a visible front side and a rear side hidden by the panel when mounted is discussed. It is an objective of the disclosure to provide illuminating walls or ceilings. The objective is solved by a flexible printed circuit layer, FPC, attached to the rear side of the panel, the FPC comprising a plurality of LEDs, wherein each LED is arranged to be positioned to emit light through a perforation of the panel.

The present invention relates to the acoustic metamaterial structural unit with the function of soundproof, flow-passing and heat-transferring enhancement, which comprises a frame, a constraint placed in the frame and a piece of membrane covering at least one surface of the frame; both the frame and the membrane are respectively placed at least one hole. Besides, the present invention also provides the acoustic metamaterial composite plate and the composite structure constructed with the acoustic metamaterial structural unit; the method for adjusting the frequency and the assemble method. The present structural unit possesses better soundproof property than the routine perforated plated or micro-perforated plate in broad operating frequency. And also the enough heat flow, gas flow or fluid flow can pass through smoothly. The diffuse efficiency of the heat energy of the mediums on both sides of the hole is increased by the vibration of the self-structure under the excitation of the soundwave and further the efficiency of heat exchange is accelerated. The method for assembling the acoustic metamaterial composite structure with the acoustic metamaterial structural units is simple. The operation performance is steady.

An acoustical panel apparatus includes a laminate panel substrate that is receptive to ink printing operations. The substrate may be provided with folding grooves to form an apertured base, a sidewall, and an inner wall which together define a receptacle. An acoustical tuning body is positionable at the receptacle to attenuate at least one of sound transmissions and sound reflections from sound passing through the apertures in the base. A mounting bracket is attached to the panel to secure the acoustical tuning body at the receptacle and for mounting the panel substrate to a wall or ceiling.

A composite structure for improving the acoustical properties of a low NRC membrane including a sound absorbing layer and a porous, scrim covered, perforated drywall layer.

A sound-absorbing element and a sound-absorbing system comprising a fibrous material having the following properties is described: specific airflow resistance comprised between 527 and 1552 [Pa s/m]; and mass porosity comprised between 66% and 79%.

Sound-permeable lining (1) for covering perforations (21) shaped in an acoustic plasterboard (2). The sound-permeable lining (1) comprises a first ply (12) of a fleece material and attached thereto a second ply (14) which is arranged in between of the first ply (12) and the acoustic plasterboard (2) to which the sound-permeable lining (1) is to be applied. The second ply (14) being of a foil material having a second opacity O.sub.2 and a plurality of through-holes (141) formed therein. The first ply (12) has a first opacity O.sub.1 so that the through-holes (141) formed in the second ply (14) are invisible through the first ply (12) and so that the applied sound-permeable lining (1) has an overall opacity O.sub.12 to allow for optically covering the perforations (21) shaped in the acoustic plasterboard (2) and an overall air flow resistivity R.sub.s12 to allow for the penetration of air so that sound can propagate via the sound-permeable lining (1).

A covering element for a floor, wall and/or ceiling covering, in particular a laminate covering element, with an upper layer structure, a stability layer of wood and/or of a wood-based material adjoining the rear side of the upper layer structure, an elastic and/or acoustically damping layer adjoining the rear side of the stability layer, and a carrier plate adjoining the rear side of the damping layer.

A tile comprises a main body having an exposed side and a concealed side. The exposed side defines a main surface and the concealed side defines a rear plane. Side surfaces between the exposed side and the concealed side of the main body have tongue-and-groove arrangements in the rear plane. The main body is made of at least one layer of acoustic felt defining at least one of the exposed side or the concealed side. The at least one layer of acoustic felt has a main plane of at least one compressed portion, with at least one embossed portion projecting from the main plane of the at least one compressed portion.

A sound-data-interactive dynamic adaptive facade module system is provided. The sound-data-interactive dynamic adaptive facade module system changes a shape of the sound-data-interactive dynamic adaptive facade module system by moving interactively according to sound values and by gaining a sound shield feature by enlarging a surface. The sound-data-interactive dynamic adaptive facade module system includes: a steel frame structure, a coating material, a vertical steel carrier profile, a coupler, a vertical and horizontal steel carrier joint profile, a metal pinion plate, a bearing, a bush cap, a servo motor, and servo motor connection cables.

A panel for a surface covering system of a plurality of like panels, the panel comprising: a base layer; a first joint extrusion attached along a first edge of the base layer; a second joint extrusion attached along a second edge of the base layer, opposite the first edge; a covering layer covering at least part of the first joint extrusion and at least part of the second joint extrusion; wherein the first extrusion is configured to join to a second extrusion of an adjacent like panel, and the covering layer substantially conceals the first extrusion and the second extrusion when installed.