摘要:
The invention concerns a reinforced concrete element comprising an at least partially open-cell foamed, sound-absorbing material which is partially exposed on a surface of the concrete element. The surface on which the foamed material is exposed consists only partially of the foamed material and the reinforcement is partially surrounded by the foamed material. The invention further concerns a method of producing the concrete element and the use thereof as an acoustic ceiling in a building.
摘要:
The invention relates to a method for manufacturing an acoustic absorbent panel, comprising the following steps: provision of a sheet of plastic material, formation of a plurality of through-slots in the sheet by milling using at least one milling tool. The invention makes it possible to manufacture an acoustic absorbent panel quickly and inexpensively.
摘要:
The present invention relates to providing an acoustic diffuser. In particular, the present invention relates to systems and methods for providing an asymmetric cellular acoustic diffuser adapted to diffuse sound waves that encounter a surface. Further, the present invention relates to providing a system of asymmetric cellular acoustic diffusers adapted to diffuse sound waves that encounter one or more surfaces in an acoustic environment. In some embodiments, an acoustic diffusion device as contemplated herein includes a planer panel having a first portion and a second portion, the first portion and the second portion each having a plurality of cells formed asymmetrically thereon. In such embodiments, the plurality of cells of the first portion is symmetrically oriented in relation to the plurality of cells of the second portion.
摘要:
Acoustic construction element comprising sound insulating cavities having a constant shape along an axis parallel to the exposed surface of the construction element, having a smaller width than the maximum width of a second, internal portion of the cavity, of which:—at least part of said cavities have different depths;—at least part of said cavities have different internal volumes and/or different internal shapes;—at least part of said cavities have a substantially constant width over their entire depth;—and at least part of said cavities are completely or partially filled with sound insulating material.
摘要:
To provide a sound absorbing structure having a superior sound absorbing characteristic and an external appearance of the sound absorbing structure which does not cause flicker or the like, by disposal, for example, in the front of an air chamber, a plurality of ribs (2a) are disposed on one surface of the sound absorbing board body (2), and a plurality of through-holes (3) are provided in basal portions (2b) between the ribs (2a) to form a porous structure. Concealing materials (5) are provided between the ribs (2a) of the sound absorbing board body to conceal the through-holes (3), respectively.
摘要:
A base structure of a fibrous material has on one face thereof a plurality of acoustical perforations. Positioned over this perforated face is a vinyl layer having a plurality of apertures therein, the apertures of the vinyl being in number much greater than the number of perforations in the base structure. The apertures in the vinyl sheet not all being in alignment with the perforations of the base structure, but the perforations of the base structure having a substantial number thereof in alignment with the apertures in the vinyl structure whereby an acoustical sound absorbing structure is formed.
摘要:
This invention is a new and unique acoustical board formed of fire retardant materials which board has the unique qualities of being fire retardant, sound absorbing, heat insulating, and decorative, and may be formed virtually in any desired size and shape. It is composed of fiberglass reinforced melamine resin panels or the like having one grooved surface covered by fiberglass cloth with perforations suitable to admit sound waves into the grooved areas of the underlying board in such manner as to trap, and debilitate such sound waves therein.