A modular acoustic structure includes a number of joined acoustic wall panels and acoustic ceiling tiles positioned atop the joined acoustic wall panels. The joined acoustic wall panels define a doorless aperture in the modular acoustic structure, an internal chamber, and a straight acoustic hallway connecting the doorless aperture and the internal chamber via an internal aperture. The straight acoustic hallway absorbs soundwaves travelling between the doorless aperture and the interior chamber. The acoustic wall and/or ceiling panels may include an acoustic absorptive surface and an acoustic reflective surface. The acoustic properties of the interior chamber and/or the straight acoustic hallway may be altered or tuned by changing which of the surfaces faces an interior of the modular acoustic structure. The size of the interior chamber and/or the modular acoustic structure may be adjustable by adding and/or removing acoustic wall and/or ceiling panels.

An acoustic isolation booth for providing a space for noisemaking out of earshot from other parties. wherein: the acoustic isolation booth comprises a shell comprising at least two compartments, an intermediate wall, a plurality of outer walls, a ceiling and one or more entryways. The shell comprises a shell width, a shell depth and a shell height. The two compartments comprise at least a first compartment and a second compartment. each of the two compartments comprises a compartment depth, a compartment width and a compartment height. A first side wall, the intermediate wall and a second side wall are configured to divide a space within the shell into the first compartment and the second compartment.

A partial enclosure for inhibiting sound passing into and out of the partial enclosure includes an absorber-barrier or an absorber-barrier-absorber, each made from sound absorbing material and sound barrier material and arranged to form the partial enclosure. The enclosure also includes an adaptive frequency matched sound-masking system. The absorber-barrier or absorbed-barrier-absorber is positioned to block or inhibit unwanted sound from various positions of a source of the unwanted sound, or motion of the source of the unwanted sound. The adaptive frequency matched sound-masking system includes a sound generating device arranged on or in the partial enclosure to emit anti-noise signal to cancel or inhibit the unwanted sound.

A ventilation and noise reduction system for centralized cooling towers includes a wind outlet sound-reduction structure, a wind inlet sound-reduction channel, a rainwater collection system, and an arrestor device; wherein the integrated sound-absorbing and sound-insulation shed includes a loading-bearing installation structure for a lifting ring, a concrete foundation, a bearing support structure, a ceiling installation structure, a sound-insulation structure and a lighting and sound-insulation structure.

A wall structure with a first dampening element (A) includes at least one layer (20,20a-c) configured to form an acoustic inner surface and/or to dampen sound; a first stopping element (B) including at least one layer (30) configured to stop sound; a second dampening element (C) including at least one layer (40,40′,50) configured to form an acoustic inner surface and/or to dampen sound; and a second stopping element (D) comprising at least one layer (60) configured to stop sound; wherein the layers of the first (A) and second (C) dampening element comprise porous and/or open cell material.

A novel workstation which incorporates an acoustical dome for increased acoustic and visual privacy for the user. The workstation further is adjustable in height such that it can accommodate a range of users from the 5.sup.th percentile seated female to the 95.sup.th percentile standing male according to the dictates of ANSI/HFES100-2007 national ergonomic standard. The workstation is further designed to be in electrical and data communication with other workstations to optimize the workstation density in an open working environment without compromising user privacy.

A fixing system for a panel, particularly for a noise absorption panel, including an omega stringer having a substantially omega-shaped cross-section, wherein the omega stringer includes a central portion and two lateral foot portions; a flat bar longitudinally directly connected to the central portion of the omega stringer; a sealing gasket arranged longitudinally onto the lateral foot portions of the omega stringer or onto the flat bar; wherein height of omega stringer is selected so that, when a panel is clamped between the omega stringer and the flat bar, the sealing gasket is compressed between panel and fixing system.

A flexible article is provided having a core formed from a plurality of laminar panels that are inter-connected to provide an expandable structure upon movement of the panels away from each other. Opposite ends of the core terminate in a pair of end panels whereby the end panels may be moved apart to expand the expandable structure. Each of the panels are made from wood material. The panels, for example, include two wood sheets with longitudinally oriented grains and a flexible backing sheet that is sandwiched and adhered between the two wood sheets.

A freestanding booth comprising a plurality of upstanding peripheral walls, a roof and a base upon which the booth stands in use, one of the walls defining an opening that is closed by a door, wherein the base extends along a basal edge of a plurality of the walls but does not extend across the opening.

A freestanding booth comprising upstanding peripheral walls, a roof and a base upon which the booth stands in use, one of the walls defining an opening that is closed by a door, wherein the base extends along a basal edge of a first of the walls, the first wall being fixed to the base via a first levelling assembly, the first levelling assembly comprising a first height adjustment mechanism and a second height adjustment mechanism that are spaced apart from one another in a longitudinal direction of the basal edge of the first wall and are independently adjustable for altering an angle of the basal edge of the first wall relative to the ground.