EP2921602A1 - Dispositif destiné à influencer le bruit ou l'énergie acoustique - Google Patents

Dispositif destiné à influencer le bruit ou l'énergie acoustique Download PDF

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Publication number
EP2921602A1
EP2921602A1 EP15159310.0A EP15159310A EP2921602A1 EP 2921602 A1 EP2921602 A1 EP 2921602A1 EP 15159310 A EP15159310 A EP 15159310A EP 2921602 A1 EP2921602 A1 EP 2921602A1
Authority
EP
European Patent Office
Prior art keywords
sound
individual elements
cavity
individual
influencing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15159310.0A
Other languages
German (de)
English (en)
Inventor
Stefan BRÄUER
Rainer Bollhorst
Silvio Rödel
Kurt Eggenschwiller
Fabio Gramazio
Mathias Kohler
Maximilian Vomhof
Jürgen Strauss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rehau Automotive SE and Co KG
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Rehau AG and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2921602A1 publication Critical patent/EP2921602A1/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B2001/742—Use of special materials; Materials having special structures or shape
    • E04B2001/748—Honeycomb materials
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Definitions

  • the invention relates to a device for influencing sound or sound energy, wherein individual elements are provided, which are arranged together, wherein the individual elements have at least one, a cavity enclosing wall.
  • sound should be understood to mean a sound event such as a sound, a sound, a sound, a bang, as it can be audibly perceived by people with hearing.
  • Sound represents the propagation of the smallest fluctuations in pressure and density in an elastic medium (gases / liquids) in waveform. Therefore, sound waves possess and transport kinetic energy while simultaneously absorbing and releasing potential energy. The sum of kinetic and potential energy gives the total sound energy of a sound event.
  • the strength of a sound event is measured in dB with the so-called sound pressure level as a logarithmic measure. This sound pressure level is perceived by humans as volume.
  • the different sounds perceived by humans are sound events, each with its own and different frequencies.
  • the important for this device according to the invention frequency range of human speech is between 125 to 4000 Hz.
  • Such devices are generally used to influence the acoustics especially in confined spaces. This topic is of particular importance when it comes to workspaces or offices, for example, in which several people work at the same time and the acoustics are of particular importance. Although the spatial effect is changing as a result, this aspect has not received the necessary attention in the area of office space planning.
  • the spatial effect is a crucial factor for the well-being and in particular the efficiency in the workplaces of people. Due to the individual acoustic perception, this results in a strong effect on the overall spatial well-being and the performance of the people there.
  • the room acoustics are determined primarily by the ratio of direct and reflected sound. This is expressed on the one hand by the reverberation, whereby the so-called reverberation time is determined by measurement or calculation. On the other hand, it is essential whether the sound is diffusely absorbed, scattered or, at best, specularly reflected by the room boundary surfaces. In the latter case, depending on the path traveled by the sound and the geometrical spatial characteristics, unpleasant hearing impressions that aggravate the speech intelligibility result, namely discoloration of the sound (comb filter effect), flutter echoes or echoes.
  • the absorption is thus defined mainly by the materiality of the corresponding surfaces, which is measured by the absorption coefficient ⁇ according to EN ISO 354.
  • the type of reflection ie specular or diffuse
  • the sound energy remains in the room in question.
  • the spreading degree s represents the ratio of the sound energy that is not reflected on a surface to the total reflected energy.
  • the spreading wheel is a characteristic value which defines in devices in which sound or sound energy is influenced, in which frequency range sound energy is diffusely scattered.
  • a generic device for influencing sound or sound energy is designed as an absorber for damping of sound and electromagnetic waves, consisting of a plurality of juxtaposed elements having a cuboid lower part and an upwardly wedge-shaped expiring upper part, wherein the wedge-shaped upper parts of the elements each have only one inclined plane whose angle to the base of the lower part ⁇ 90 °.
  • the device is further designed so that the individual absorber elements are assigned in rows to a two-row system, wherein the inclined plane of the elements of one row is rectified to the adjacent element of the same row, while the inclined plane of the elements of the other row are alternately opposing and facing the elements of the two rows delimiting them so that the degree of wedge-shaped tops is meandering.
  • the absorber elements can be made of prefabricated mineral fiber and / or open-cell plastic plates.
  • a disadvantage of this absorber is that it must be made very expensive and expensive and that the absorber elements have a length of about 1 m and should be arranged so that in an area about 4 x 10 elements are arranged, so that the absorber a base from about 800 mm to 2 m.
  • This device for influencing sound or sound energy is thus very large and voluminous and can not be integrated or only with great effort, in particular with existing architecture.
  • the air sound absorber consisting of an open-pore foam body, is characterized in that the foam body is designed like a board, which is provided in the foam body for mating with another, similar foam body formed at least one opening, which opens into a side surface, the opening a height which corresponds to about half the height of the foam body and a depth corresponding to the thickness of the foam body. This should make it possible to increase the absorption area by a factor of 1.5 to 10.
  • This air muffler should be able to be used as an absorber both on walls and ceilings.
  • a disadvantage of this air muffler is that this is very expensive to manufacture and that in particular the assembly of the individual foam body is very expensive.
  • Another disadvantage is the lack of ability to interact creatively on the foam body, both in terms of their acoustic functionality as well as in terms of the design of the or each other arranged air muffler
  • a generic device for influencing sound or sound energy is in the DE 10327633 B4 described.
  • This passive device for the absorption of sound or sound energy from sound waves in liquid or gaseous media has fixed individual elements in two directions in succession, which abut contact surfaces on them adjacent individual elements.
  • the solid individual elements are polyhedra in a self-toothed arrangement, in which case no single element without a lateral evasive movement of the individual elements adjacent to it from the surface of the self-toothed arrangement is movable out.
  • the individual elements have maximum dimensions of less than 50 mm, preferably less than 20 mm.
  • the individual elements can or must be held by a frame arranged around them.
  • the individual elements are arranged individually insofar as the relative movement between them is thus possible. However, this relative movement is limited by the self-toothing. During the relative movement of the individual elements, the friction which occurs causes an energy dissipation from a sound wave, which causes the relative movement of the individual elements.
  • Platonic body for example as a tetrahedron, hexahedron, octahedron, dodecahedron and icosahedron.
  • a further disadvantage of the device from the prior art is that they are not specifically adaptable to the corresponding special requirements for the acoustics of rooms or can be extensively customized in further steps.
  • Another disadvantage of the prior art devices is that they try to influence the sound energy mainly through absorption.
  • the invention which has set itself the task to provide a device for influencing sound or sound energy, which overcomes the disadvantages of the known prior art, which is inexpensive and economical to produce, taking into account both sound-absorbing and sound-absorbing effect creative as well as acoustic requirements and is also adaptable to different spatial situations.
  • a device for influencing sound or sound energy wherein individual elements are provided, which are arranged together, wherein the individual elements have at least one wall enclosing a cavity, are characterized in that the individual element as one of two levels Surfaces and a lateral surface of limited body, which is open on at least one side of the cavity. Due to the advantageous modular design of a plurality of standardized individual elements, it is now possible to provide an acoustically effective and an architecturally configurable device for influencing sound or sound energy, which can be used to avoid monotonous and acoustically less optimized office space.
  • the individual element is a body delimited by two planar surfaces and a lateral surface which is open on at least two sides of the cavity.
  • the individual element in addition to the modular arrangement of the individual elements and a better influence sound or sound energy can be achieved because it is received in the open cavity of the individual elements and diffused scattered.
  • the individual element is designed as an open cylinder on at least two sides of the cavity.
  • a cylinder is understood in the context of the invention, one of two parallel, flat, congruent surfaces and a lateral surface of limited body, wherein the lateral surface is formed by parallel straight lines.
  • the parallel flat surfaces are the base surface and the top surface.
  • a circular cylinder with two equal circles as the base and top surface.
  • the cylinder is designed as a straight cylinder, that is, the lateral surface formed by the parallel straight line, is arranged perpendicular to the base and top surface.
  • the base surface is arranged offset from the top surface, so that a slated cylinder is present, which also has the required positive acoustic properties.
  • the individual element is designed as a Prima open on at least two sides of the cavity.
  • prism is understood in the inventive device for influencing sound or sound energy that it is a geometric body having a polygon as a base and whose side edges are parallel and equal length.
  • a prism as a geometric body is created by parallel displacement of a plane polygon along a line in space that is not lying in this plane and is therefore also a special polyhedron.
  • the inventive device for influencing sound or sound energy is designed so that the parallel displacement of the polygon is perpendicular to the base and thus a straight prism is realized which has a base and a cover surface opposite thereto and congruent and parallel boundary surfaces which as lateral surfaces are designated.
  • the parallel displacement of the polygon is not perpendicular but at an acute angle, so that the individual elements may be formed as oblique prisms.
  • such individual elements are both inexpensive and economical to produce, as well as in a variety of geometries and shapes in large numbers feasible.
  • the device according to the invention for influencing sound or sound energy is designed so that the individual element at least two sides of the cavity is formed as an open polyhedron. Due to the advantageous combination of acoustic diffusion / diffusivity and absorption, the device according to the invention for influencing sound or sound energy can advantageously be adapted both to the architecturally present spaces and to the room acoustics prevailing therein.
  • This polyhedron as a three-dimensional body is bounded by polygons (polygons) as side surfaces.
  • the two open sides of the cavity are arranged opposite one another.
  • the device according to the invention acts both as an absorber and has an effective sound diffusion.
  • the two opposite open sides of the cavity are each the base surface and the top surface of the cylinder and / or the prism and / or the polyhedron.
  • the cavity is formed in cross-section as a polygon.
  • This can be designed, for example, as a triangle, quadrilateral, pentagon, hexagon and the like, so that in addition to high acoustic effectiveness, a wide variety of designs can be made available in order to produce such devices for influencing sound or sound energy.
  • the individual elements are arranged axially adjacent to each other.
  • a variety of color or surface designs are possible, which can be assigned to the individual premises.
  • Another advantage of the inventive device for influencing sound or sound energy is that it is possible for the first time by the different dimensions and color scheme of standardized individual elements that this device is not, as usual in the art, arranged as inconspicuous in the room But this device according to the invention for influencing sound or sound energy itself becomes a spatial design element, which also still has a high acoustic efficiency.
  • the individual elements of the device according to the invention are so arranged that their axes are arranged parallel to each other.
  • the individual elements of the device according to the invention are so arranged that their axes are arranged parallel to each other.
  • the axes of the individual elements are arranged at an acute angle to each other.
  • a measurable acoustic effectiveness sound-scattering / sound-absorbing
  • the single element is made of a metallic and / or polymeric and / or ceramic and / or duromeric material. This leads to a cost-effective and economical production of the device according to the invention for influencing sound or sound energy.
  • the device for influencing sound or sound energy has individual elements which are at least partially made of a polymeric material. It has been found to be advantageous if the single element is made of a polymeric material, such as polyvinyl chloride (PVC); Polyolefin, such as polypropylene (PP) or polyethylene (PE); a styrene-based polymer such as polystyrene (PS) or styrene-butadiene predominantly styrene (SB) copolymer or acrylonitrile-styrene-acrylic ester copolymers (ASA) or acrylonitrile-butadiene-styrene copolymers (ABS) or styrene-acrylonitrile (SAN); Polybutylene terephthalate (PBT); Polyethylene terephthalate (PET); Polyoxymethylene (POM); Polyamide (PA); Polymethyl methacrylate (PMMA); Polyphenylene oxide (PVC); Polyvinyl chlor
  • the device for influencing sound or sound energy forming individual elements is possible, while also the design options by the nature of the material or the color of the material is flexibly selectable.
  • Another advantage of the device according to the invention for influencing sound or sound energy is seen in the fact that the acoustic properties can be positively influenced by the nature of the material of the individual elements, their surface structure and also their wall thickness.
  • At least one sound element is arranged in the cavity of at least one individual element.
  • the sound element may be formed as a sound reflection element, which at least partially closes the cavity of the single element and thus leads to a diffuse scattering of the sound or the sound energy.
  • the sound element is designed as a sound absorption element.
  • the sound element is designed so that it has a sound-absorbing material on at least one surface.
  • This sound-absorbing material may be, for example, a sound-absorbing non-woven or a highly structured material such as a foam.
  • the sound element has openings that positively influence the sound or the sound energy in the cavity of the individual element. These openings can be arranged regularly or irregularly in the sound element and have different cross-sections and sizes.
  • the sound element at least partially closes the cavity of the individual element and thus leads to an advantageous improvement and adjustability of the acoustic effectiveness of the device according to the invention. In this way, both the degree of spreading of the device according to the invention and the sound absorption can be positively influenced.
  • the single element has an axial extent of about 10 to 1,000 mm, preferably 100 to 500 mm.
  • Another advantage of the device according to the invention is seen in the fact that it can be designed, manufactured and mounted both with newly planned rooms as well as existing premises with the required acoustic effectiveness.
  • An additional advantage of the device according to the invention results from the basic modularity of both the individual elements as well as their spatially differentiated assembly. As a result, the production of the device can also take place in separate parts or the device can be fabricated, transported and assembled as a single segment from a plurality of individual elements. So can complex design solutions be realized under significantly reduced manufacturing, transport and assembly costs.
  • Another advantage of the modular design is also the basic extensibility of the device.
  • additional individual elements or segments can be added from several individual elements at any time and the targeted, for example, over a longer period changing spatial situation (eg expansion of the number of workplaces, spatial restructuring, etc.).
  • this also applies to the dismantling of such an advantageous device.
  • the repairability is also advantageous in that individual elements or segments of several individual elements of the described device can be separated out and replaced with relatively little effort, this without having to replace or replace the entire device.
  • the inventive device for influencing sound or sound energy is further characterized by the fact that arranged in the cavity of the single element sound elements can be arranged in different positions in the axial extent of the individual elements. This makes it possible for the first time by the choice of the position of the sound element in the cavity of the individual element to provide a device according to the invention for influencing sound or sound energy, which is adaptable to the special geometry and acoustics of rooms and the most diverse frequencies of human speech In the range of 125 to 4,000 Hz, their absorption behavior or their sound diffusion influence their sound quality so that their sound quality is very natural.
  • the individual elements and / or the sound elements are available in different colors available, so that the device for influencing sound or sound energy is not only acoustically effective but is simultaneously perceived as a design element. It is also within the scope of the invention that both the single element and the sound element is made of a transparent and / or translucent material, so that a variety of visual design forms are possible.
  • the cavity of the single element has a volume of about 0.1 to 10 l, preferably 0.1 to 5 l.
  • the device according to the invention for influencing sound or sound energy can be modified in such a way that, on the one hand, it has high sound diffusion or, on the other hand, high sound absorption by inserting sound absorption material into the cavity of the individual elements.
  • At least one fastening element is arranged on at least one wall of at least one individual element.
  • This fastener serves to connect a single element with an axially adjacent individual element.
  • the fasteners are advantageously made in the same wall thickness or in the same material as the single element itself. It has also proven to be advantageous if the arranged on the individual elements fasteners materially connected via known adhesives or welding process with the other individual elements and such a device according to the invention for influencing sound or sound energy can be produced.
  • the fastening elements are formed so that they have approximately the same axial extent as the individual elements. Furthermore, it is advantageously possible to form the arranged on the individual elements fasteners with a smaller axial extent of about 10 to 200, preferably 50 to 200 mm.
  • the inventive device for influencing sound or sound energy is advantageously designed so that the individual elements are arranged directly adjacent to each other with the open side.
  • the individual elements can be very quickly and inexpensively positioned next to each other and fastened together, so that a device according to the invention for influencing sound or sound energy can be produced.
  • Another great advantage of the inventive device for influencing sound or sound energy is that the individual elements are arranged with their open side spaced from each other. In this way, a device according to the invention for influencing sound or sound energy can be made available, in which the individual elements over their axial extent in different positions to each other are arranged and thus in addition to a high sound-scattering or sound-absorbing effect and high design requirements meet.
  • the acoustic effectiveness can additionally be enhanced and the design effect can be increased by the sound elements arranged differently in the axial extent of the individual elements. Due to the variable positioning of the sound element in each individual element periodic repetitions are avoided in the structure of the partition wall and it is possible a high variance in the structural depth within this partition wall.
  • the device according to the invention for influencing sound or sound energy can be dimensioned and manufactured in such a way that partition walls can be produced therefrom which are arranged directly on the wall of a room covering them over the entire area or over the entire area.
  • a juxtaposition of devices according to the invention for influencing sound or sound energy can be arranged on the ceiling of a room.
  • a device according to the invention for influencing sound or sound energy can thus be produced, which has a mean spreading degree s of the octave bands from 125 Hz to 4,000 Hz s> 0.4 according to ISO 17497-1.
  • the device according to the invention for influencing sound or sound energy is furthermore designed such that, by the choice of the material, the geometry, the number of individual elements and the positioning and the number of sound elements, a sound absorption level measured in the reverberation space of ⁇ > 0.3 (FIG. at 500 Hz) and ⁇ > 0.5 (from 1,000 Hz) in accordance with EN ISO 354.
  • a device according to the invention for influencing sound or sound energy which has individual elements 1, which are arranged together.
  • the device according to the invention for influencing sound or sound energy has ten individual elements 1 which have at least one wall 10 enclosing a cavity 2.
  • the individual elements 1 are formed in this embodiment as on the sides 3, 4 of the cavity 2 open prism, which is bounded by polygons (squares) as side surfaces.
  • the side surfaces 10 are formed as a rectangle and the open side 3, 4 square, in particular square.
  • the cavity 2 in cross-section as a quadrilateral, in particular square and the individual elements 1 are arranged axially adjacent to each other.
  • the individual elements 1 are arranged parallel to each other in this embodiment, so that the individual elements 1 with their side surfaces 10 directly abut each other.
  • the individual elements 1 have in this embodiment, an axial extent of 200 mm, which advantageously results in that an effective sound diffusion in the range of frequencies of about 125 Hz to 4,000 Hz can be realized.
  • the individual elements 1 of the device according to the invention for influencing sound or sound energy are designed in this exemplary embodiment such that a fastening element 6 is arranged on at least one wall 11, 13 of at least one individual element 1.
  • the fastening element 6 is arranged in this embodiment approximately orthogonally on a side surface 11 and on the oppositely disposed side surface 13 of the Einzelelements1.
  • the fastening element 6 has the same axial extent of 200 mm.
  • the fastening element 6 is furthermore designed such that it has a width which corresponds to approximately half the width of the wall 10, 11, 12, 13, wherein the fastening element 6 is arranged centrally on the wall 11 of the single element 1.
  • the individual elements 1 can be arranged axially and parallel to each other and fixed by, for example, known adhesives or welding methods, so that the inventive device for influencing sound or sound energy quickly, inexpensively and acoustically effective to produce is.
  • the individual elements 1 are arranged with their open side 3, 4 directly adjacent to each other or to each other.
  • the inventive device for influencing sound or sound energy thus has a constant depth, which corresponds to the axial extent of the individual elements 1.
  • the individual elements 1 are designed so that they have a constant wall thickness of about 2.5 mm over their entire axial extension and are made of a polymeric material acrylonitrile-butadiene-styrene copolymers (ABS).
  • ABS acrylonitrile-butadiene-styrene copolymers
  • the single element 1 in the known extrusion or coextrusion process, or injection molding process inexpensively and economically, to dimension the desired axial extent and produce a device according to the invention for influencing sound or sound energy.
  • the individual element 1 and / or the fastening element 6 can be produced in the same material or in the same color, but it is also within the scope of the invention that each wall 10, 11, 12, 13 of the single element and the fastening element 6 in a different color can be produced.
  • FIG. 2 is a perspective view of another device for influencing sound or sound energy shown, which has a total of twelve individual elements 1.
  • the individual elements 1 are arranged parallel to each other and have at least one, a cavity 2 enclosing wall 10.
  • the single element 1 is formed in this embodiment as at least one side 3, 4 of the cavity 2 open polyhedron, wherein the cavity 2 is formed in cross-section as a hexagon and the side surfaces 10, 11, 12, 13, 14, 15 equal length, arranged in parallel and are formed as a rectangle.
  • the individual elements 1 of the device according to the invention for influencing sound or sound energy are arranged axially adjacent to each other, however, wherein the individual elements 1 with at least one side 3, 4 are arranged spaced from each other.
  • the device according to the invention for influencing sound or sound energy is furthermore designed such that in each case a sound element 5 is arranged in the cavity 2 of the individual elements 1.
  • This trained as a sound reflection element sound element 5 is also formed in this embodiment in cross-section hexagonal and closes the cavity 2 of the single element 1 over its entire surface.
  • the sound element 5 is arranged slightly spaced from the open side 3 of the individual elements 1 in this embodiment.
  • the individual elements 1 have in this embodiment, an axial extent of about 380 mm, which in particular realizes a very effective sound diffusion in the field of speech compatibility ie at frequencies of 125 to 4,000 Hz.
  • the inventive device for influencing sound or sound energy is designed so that between the wall 10 and the wall 15, a fastening element 6 is arranged, which is approximately perpendicular to the longitudinal axis of the single element 1 of these projecting, arranged.
  • the fastening element 6 has in this embodiment an axial extent of about 100 mm and is arranged approximately centrally between the walls 10 and 15 of the single element 1.
  • the individual elements 1 of the device according to the invention for influencing sound or sound energy axially spaced from one another are arranged with a variable distance of up to 100 mm to each other.
  • the acoustic efficiency of the device according to the invention for influencing sound or sound energy can be further optimized.
  • FIG. 3 is the perspective view of a single element 1 of the device according to the invention for influencing sound or sound energy shown.
  • the single element 1 has at least one, a cavity 2 enclosing wall 10, 11, 12, 13, 14, 15.
  • the single element 1 is further formed in this embodiment, that it is formed as on two sides 3, 4 of the cavity 2 open prism.
  • the side 3 forms the base surface and the side 4, the top surface of the formed as a straight primate single element.
  • the walls 10, 11, 12, 13, 14, 15 are parallel and of equal length and formed in this embodiment as squares in particular as rectangles and together form the so-called lateral surface.
  • a sound element 5 is arranged, which has the same geometry as the base surface or top surface formed side 3, 4 and closes the cavity 2 of the single element 1 over its entire surface.
  • the trained as a sound reflection element sound element 5 is arranged axially spaced in the cavity 2 to the side 3 of the single element 1 in this embodiment.
  • a high level of sound diffusion is achieved with simultaneously optimized sound absorption.
  • the sound element 5 can be arranged directly on the side 3 or directly on the side 4 of the single element 1, so that either a high sound absorption feasible or high sound diffusion is possible.
  • the sound element 5 at any position axially in the cavity 2 of the single element 1 can be arranged, depending on which frequencies from the frequency range of 125 to 4000 Hz to be absorbed or diffused scattered.
  • the individual element 1 is furthermore designed such that a fastening element 6 is arranged between the wall 10 and the wall 15.
  • the fastening element 6 is arranged by the wall 10, 15 projecting approximately at right angles to the axis A of the single element 1.
  • the fastening element 6 is formed in this embodiment in its axial extent smaller than single element 1 with about 100 mm in length.
  • the fastener 6 is further formed in this embodiment, that it has a width of about 15 mm, wherein the wall thickness of the fastener 6 about the wall thickness of 2.5 mm of the wall 10, 11, 12, 13, 14, 15 of the single element 1 corresponds.
  • the individual element 1 can now be used in the intended use for producing a device for influencing sound or sound energy by different individual elements 1 according to the exemplary embodiment of FIG Fig. 3 connected to each other via the fastening elements 6 cohesively, for example via welding methods in different axial positions to each other can be arranged.
  • FIG. 4 is a perspective view of another device according to the invention for influencing sound or sound energy shown.
  • This configured as a partition wall device for influencing sound or sound energy has a plurality of individual elements 1, which are arranged together, wherein the individual elements 1 at least one, a cavity 2 enclosing wall, wherein the single element 1 than at least one side 3, 4 of the cavity 2 open prism is formed.
  • the individual elements 1 according to those in the Fig. 3 described, so that a detailed description of the single element 1 is omitted.
  • various individual elements 1 are formed so that in their cavity 2 each have a sound element 5 is arranged.
  • the choice of the respective individual elements 1, in whose cavity 2 a sound element 5 is arranged, depends on the value of the frequencies to be absorbed or diffusely scattered in the room of the installation.
  • the inventive device for influencing sound or sound energy is formed in this embodiment, that at the left free end or at the right free end, the individual elements 1 with their open side 3, 4 are arranged directly adjacent to each other.
  • the configured as a partition wall device for influencing sound or sound energy thus has a high sound-scattering and sound-absorbing effect, which by the number, the geometry and the axial extent of the individual elements 1; by the number and arrangement of the sound elements 5 in the cavity 2 of the individual elements 1, as well as by the possible introduction of additional sound absorption materials, such as e.g. Mineral fiber, open-cell foam, wool felt, etc. in the cavity 2 of the individual elements 1 is conditional.
  • the configured as a partition wall device for influencing sound or sound energy is by the number, the geometry in particular the axial extent and the cross section of the cavity 2 of the individual elements 1, as well as by the different number or different positions in the cavity 2 of the single element 1 arranged sound elements 5, as well as arranged by the both parallel to each other Individual elements 1 as well as by the spaced apart with their open sides 3, 4 arranged individual elements 1 so formed that a sound absorption measured in the reverberation chamber of ⁇ > 0.3 (at 500 Hz) and ⁇ > 0.5 (from 1,000 Hz) EN ISO 354 is feasible, while at the same time the average degree of dispersion of octave bands from 125 Hz to 4,000 Hz of s> 0.4 according to ISO 17497-1 is feasible.
  • the device for influencing sound or sound energy is designed so that in addition to optimal acoustic effectiveness with respect to sound-scattering or sound-absorbing effect also very many possibilities of design can be realized, in particular by the number Arrangement, the geometry, the material, the color of the individual elements 1 or the number, the arrangement and the color of the individual sound elements. 5

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP15159310.0A 2014-03-19 2015-03-17 Dispositif destiné à influencer le bruit ou l'énergie acoustique Withdrawn EP2921602A1 (fr)

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DE202014101267.2U DE202014101267U1 (de) 2014-03-19 2014-03-19 Vorrichtung zur Beeinflussung von Schall bzw. Schallenergie

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US20220034085A1 (en) * 2019-03-14 2022-02-03 Nihon Onkyo Engineering Co., Ltd. Acoustic adjustment shelf

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018102141B4 (de) * 2018-01-31 2019-09-26 Deutsches Zentrum für Luft- und Raumfahrt e.V. Plattenförmige Struktur und Verfahren zur Reduzierung der Schallabstrahlung
DE102019109128A1 (de) * 2019-04-08 2020-10-08 Homag Gmbh Vorrichtung und Verfahren zum Beschichten von Werkstücken

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DE2502846A1 (de) 1975-01-24 1976-07-29 Gruenzweig Hartmann Glasfaser Absorber zur daempfung von schall- und elektromagnetischen wellen und verfahren zur herstellung
EP0338461A2 (fr) * 1988-04-20 1989-10-25 Wilhelmi Werke GmbH & Co.KG Procédé de fabrication d'un élément en forme de panneau, absorbant le son
DE4238352C1 (de) 1992-11-13 1994-02-17 Freudenberg Carl Fa Luftschalldämpfer
DE10327633B4 (de) 2003-06-20 2005-05-25 Deutsches Zentrum für Luft- und Raumfahrt e.V. Vorrichtung zur Absorption von Schallenergie aus Schallwellen in flüssigen oder in gasförmigen Medien
EP1548198A1 (fr) * 2003-12-23 2005-06-29 Giorgio Rubbiani Panneau pour diriger et conditionner le son
FR2941647A1 (fr) * 2009-02-05 2010-08-06 Aircelle Sa Structure a ame alveolaire apte a etre utilisee dans un panneau structurant pour une nacelle d'aeronef
US8047329B1 (en) * 2010-08-13 2011-11-01 Rohr, Inc. System and method for noise suppression

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NL275353A (fr) * 1961-02-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502846A1 (de) 1975-01-24 1976-07-29 Gruenzweig Hartmann Glasfaser Absorber zur daempfung von schall- und elektromagnetischen wellen und verfahren zur herstellung
EP0338461A2 (fr) * 1988-04-20 1989-10-25 Wilhelmi Werke GmbH & Co.KG Procédé de fabrication d'un élément en forme de panneau, absorbant le son
DE4238352C1 (de) 1992-11-13 1994-02-17 Freudenberg Carl Fa Luftschalldämpfer
DE10327633B4 (de) 2003-06-20 2005-05-25 Deutsches Zentrum für Luft- und Raumfahrt e.V. Vorrichtung zur Absorption von Schallenergie aus Schallwellen in flüssigen oder in gasförmigen Medien
EP1548198A1 (fr) * 2003-12-23 2005-06-29 Giorgio Rubbiani Panneau pour diriger et conditionner le son
FR2941647A1 (fr) * 2009-02-05 2010-08-06 Aircelle Sa Structure a ame alveolaire apte a etre utilisee dans un panneau structurant pour une nacelle d'aeronef
US8047329B1 (en) * 2010-08-13 2011-11-01 Rohr, Inc. System and method for noise suppression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220034085A1 (en) * 2019-03-14 2022-02-03 Nihon Onkyo Engineering Co., Ltd. Acoustic adjustment shelf

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