A variable acoustic assembly comprising a housing and a one or more absorbing pads. The housing contains the one or more absorbing pads, a one or more doors, a one or more rear brackets, and a one or more hinges. The one or more doors attach to the one or more rear brackets with the one or more hinges. The one or more doors are configured to selectively open and selectively close between an open configuration and a closed configuration by rotating on the one or more hinges. The variable acoustic assembly having a closed width in the closed configuration and an open width in the open configuration. With the one or more doors in the open configuration, a portion of the one or more absorbing pads are exposed outside of the housing.

A modular dynamic acoustic system for use in connection with an indoor environment includes a movable panel array, a support structure, and a plurality of suspension members. The movable panel array includes a plurality of panel members, each of which including a body defining at least one edge, at least one hinge positioned along the at least one edge, and at least one mounting structure. The panel members are operably coupled with at least one adjacent panel member via the at least one hinge. Each of the plurality of suspension members is operably coupled with the support structure and the at least one mounting structure of one of the plurality of panel members to secure the movable panel array to the support structure. Each of the suspension members is movable to modify a configuration of the movable panel array.

A sound absorbing structure includes a perforated surface with a plurality of through-holes, a first cavity that has a portion extending non-parallel to a normal direction of the perforated surface, the first cavity being breathable between an interior and exterior of the first cavity via the plurality of through-holes existing in a first region of the perforated surface, and a second cavity that is breathable between an interior and exterior of the second cavity via the plurality of through-holes existing in a second region adjacent to the first region of the perforated surface.

A sound isolation assembly comprising: one or more backing plates; one or more acoustic isolators; and a backing block. The acoustic isolators may be secured between the backing plates and the backing block when the backing plates are fastened to the backing block. When the backing plates are fastened to the backing block, the backing plates are substantially prevented by the acoustic isolators from being in direct contact with the backing block. The acoustic isolators may be fastened to the studs. The sound isolation assembly, when installed in a wall that is supporting a heavy load, raises the Sound Transmission Class rating of that wall.

A baffle assembly for installation on a finished ceiling or wall membrane comprising an elongated base and an elongated panel mountable on the base, the base having fastening areas spaced along its length for receiving fasteners therethrough and anchored on the membrane, the panel having front and rear edges bounding a width of the panel, the panel having a hollow space at the rear edge extending along substantially the full length of the panel, the hollow space being constructed and arranged to receive the base and the base being constructed and arranged upon reception in the hollow to laterally stabilize the panel, the base and panel having interengaged parts concealed in the hollow that maintain the panel on the base.

An isolating hanger and method of making is disclosed for mounting a ceiling from an upper support. The isolating hanger comprises a one piece bendable wire having a spring shape defined between a first and a second wire end. The spring shaped is tempered for transforming said spring shape into a resilient spring. The remaining bendable wire ends affix the upper support to the ceiling for isolating vibration between the ceiling and the upper support.

Described herein is a building panel and related building systems, the building panel having a first major surface opposite a second major surface, the building panel comprising a core comprising a first body comprising a first fibrous material; and a second body comprising a second fibrous material, a veneer facing layer coupled to the core, the veneer facing layer comprising a plurality of perforations.

A dynamic acoustic system for use in connection with an indoor environment includes a plurality of elongated acoustic bars and a controller operably to each of the elongated acoustic bars. Each of the bars is operably coupled to a ceiling member of the indoor environment and includes an upper portion, a lower portion, a plurality of side surfaces extending between the upper and lower portions, an interior region at least partially defined by the upper portion, the lower portion, and the plurality of side surfaces, and at least one movable element movable between first and second positions. The controller selectively controls operation of the at least one movable element of a desired number of the plurality of elongated acoustic bars to alter an environmental characteristic of the indoor environment.

A soundproof underlayment membrane is disclosed. The membrane comprises a main layer having a given thickness made of a flexible material and a plurality of points extending from one of the surfaces of the main layer. The points are located on the surface in order to create an absorbing chamber between the main layer and an adjacent surface on which the membrane is placed, while reducing a surface of contact between floor coverings installed on the membrane and the adjacent surface. By combining at least two different structural elements, the membrane is particularly efficient for sound reduction in a construction such as the impact or structure borne noise (Impact Insulation Class—IIC) and the sound transmission or airborne sound (Sound Transmission Class—SCC). Compared to existing membranes in the fields, the present invention provides a light material, easy to manufacture, ship and install, while providing effective soundproof properties.

A building element includes a sheet of a rigid material and at least one nonlinear energy sink including a blade with two end parts and a nonlinear spring function intermediate part, a mass fixed to the nonlinear spring function intermediate part of the blade, and a fixing element allowing the two end parts of the blade to be fixed to a solid support in such a way that the nonlinear spring function intermediate part can oscillate about its position of equilibrium or its positions of equilibrium. The nonlinear energy sink is fixed rigidly to the sheet by the fixing element. The building element can be contained in a partition wall. Additionally, such an energy sink or building element can be used for reducing the acoustic transparency of a wall.