EP0046559A2 - Elément résonnant absorbant le son - Google Patents

Elément résonnant absorbant le son Download PDF

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Publication number
EP0046559A2
EP0046559A2 EP81106377A EP81106377A EP0046559A2 EP 0046559 A2 EP0046559 A2 EP 0046559A2 EP 81106377 A EP81106377 A EP 81106377A EP 81106377 A EP81106377 A EP 81106377A EP 0046559 A2 EP0046559 A2 EP 0046559A2
Authority
EP
European Patent Office
Prior art keywords
resonator
hollow body
sound absorption
open
absorption element
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.)
Granted
Application number
EP81106377A
Other languages
German (de)
English (en)
Other versions
EP0046559B1 (fr
EP0046559A3 (en
Inventor
Wolfgang Michel
Helmut Dr. Golly
Herbert Dr. Braunisch
Walter Dr. Woticky
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of EP0046559A2 publication Critical patent/EP0046559A2/fr
Publication of EP0046559A3 publication Critical patent/EP0046559A3/de
Application granted granted Critical
Publication of EP0046559B1 publication Critical patent/EP0046559B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 resonator sound absorption elements consisting of a hollow body with at least one resonator surface structure dividing its cavity and those made of a hollow body, on the peripheral edge of which a resonator surface structure covering the cavity mouth is fastened.
  • the hollow body of the resonator sound absorption element is either open at its two ends or it has a soundproof bottom that closes off its cavity at one end.
  • the variant of the invention in which the hollow body is open at both ends is used as intended in conjunction with a reverberant wall.
  • DE-OS 27 58 041 describes a sound absorption element which consists of two cup-shaped containers made of plastic film, one of which is inserted into the cavity of the other. The surfaces exposed to the sound field vibrate and reduce the sound intensity via internal losses.
  • the known sound absorption elements have the disadvantage of significantly reduced sound absorption compared to those which are essentially based on mineral fibers.
  • the present invention is based on the object of proposing resonator sound absorption elements which have a greater degree of sound absorption than known resonator sound absorption elements.
  • a dimensionally stable hollow body is to be understood as one that consists of material that gives it dimensional stability.
  • the wall of the hollow body is perforation-free, i.e. it is practically impermeable to gases.
  • the hollow body preferably has rectangular, circular or oval cross-sectional areas or one which is delimited by a preferably curved, self-contained line.
  • the hollow space is understood to be the space delimited by the jacket.
  • the hollow body of the resonator sound absorption element is also referred to as a jacket.
  • the longitudinal axis of the hollow body is preferably straight.
  • the hollow body which is open at both ends has preferably flat peripheral edges on each of these, which each form its end walls, the inner boundary edges of the peripheral edges respectively delimiting the openings of the hollow body cavity.
  • peripheral edge surfaces each border in the area of their outer peripheral boundary edges to the hollow body outer surface.
  • the areas delimited by the outer boundary edges of the edges of the hollow body are referred to as the hollow end faces; those hollow body end faces on which sound waves first hit when the products according to the invention are used as intended are referred to as front end faces, the others as base end faces.
  • the end walls of the hollow body corresponding to the front end faces are referred to as front end walls, and those corresponding to the base end faces are referred to as base end walls.
  • the front and base end faces of the hollow bodies or their front and base end walls advantageously run parallel to one another and in each case in planes with which the longitudinal axis of the hollow body in each case forms right angles.
  • the outside of the floor forms the hollow body base surface or the hollow body base end wall.
  • the inner edges of the peripheral edge at the other hollow body end of the described variant of the invention delimit the free cavity opening, and its outer edge delimits the front surface of the hollow body.
  • the resonator sound absorption elements can each also be designed such that the front end wall side mouth openings of the hollow body cavity are covered by perforated cover plates which can be fastened to the surface of the front peripheral edge of the hollow body.
  • the total perforation of the cover plate is at least 15% of the total area of the same.
  • the hollow body is advantageously designed such that its height, which is determined by the width of its peripheral surface, remains constant over the entire circumference and is, for example, 7 to 10 cm.
  • hollow bodies whose cavities in the area of the front face of the hollow body are delimited by perforated cover plates or have a resonator surface structure attached to their peripheral edge on the front face are to be considered “open” in this area.
  • the hollow body is advantageously designed such that its straight longitudinal axis forms a right angle with the hollow body end faces.
  • At least one resonator sheet is provided in the cavity of the hollow body of one variant of the invention.
  • the resonator sound absorption elements When used as intended, they are advantageously arranged in space in such a way that their longitudinal axes form right angles with a reverberant wall or with the reverberant integral bottom of the hollow body.
  • a particular embodiment of the product according to the invention is characterized in that in the cavity of a hollow body which is open at both ends, a single resonator surface structure is arranged in such a way that its surfaces each extend at a distance from and preferably parallel to the respective end faces of the hollow body.
  • the hollow body cavity is subdivided into a plurality of partial cavities by a plurality of, for example two resonator surface structures which are each spaced apart, preferably parallel spaced apart, the cross-sectional areas of which in each case correspond to the cross-sectional area of the hollow body.
  • the resonator sheets are preferably arranged in the cavity in such a way that they each extend in planes to which the longitudinal axes of the cavities each form a right angle.
  • the hollow body can be open on both sides or closed at one end by a reverberant wall.
  • the dimensionally stable hollow body of the products according to the invention consists in each case of a material which gives it sufficient strength, for example of wood, metal, glass, ceramic composition and the like, it preferably consists of plastic, in particular of plasticizer-free polyvinyl chloride or of polypropylene; the hollow body made of plastic can be transparent or translucent.
  • the invention comprises an embodiment which consists of a hollow body open at both ends, in which on the surface of one of the two mouth edges bordering the mouth of the hollow body cavity, a resonator surface structure, its shape and dimensions, the shape and dimensions of the hollow body end face corresponds, is fastened in such a way that it covers the mouth of the hollow body cavity.
  • the resonator sheet is attached to the front end peripheral edge of the hollow body, for example by nailing, stapling or gluing.
  • the designated special variant of the invention can be implemented, for example, in that the hollow body consists of a rectangular slatted frame; the surfaces of the slatted frame form the peripheral edges of the hollow body realized thereby.
  • the frame-like hollow body in the form of a slatted frame is used as intended in connection with a reverberant wall, that side of the frame which is immediately adjacent to the reverberant wall is referred to as the rear side of the frame or the base surface of the frame.
  • a resonator sheet is to be understood as one which, due to its structural structure, is permeable to flowable media and which is set into vibration under the influence of sound waves.
  • the thickness of the resonator sheet is small compared to its length and width.
  • the sound-absorbent resonator fabrics convert sound energy that strikes them into heat; they absorb sound in the hearing range of approx. 30 to 15,000 Hz (Hertz).
  • Resonator sheet structures made of cellulose hydrate containing open-pore structured fibers, in which the fibers are virtually completely enclosed by cellulose hydrate, are defined as non-fibrous material in the context of the present description of the invention and the claims, because the fiber content is negligibly small in relation to the cellulose hydrate content.
  • the open-pored, structured structures or the plates made of polymer fibrids are individualized in terms of their structural structure by a flow resistance for air in the range from 100 to 10,000 N s / m 3 , preferably one in the range from 400 to 1,600 Ns / m 3 .
  • the flow resistance of the fabrics can be determined, for example, according to DIN regulation 52 213.
  • open pore is used by definition to express the structural structure, according to which the fabrics according to b) and c) are permeable to flowable media.
  • Flat resonator structures which are made up of polymer fibrids which are matted to one another are, by definition, to be regarded as being fiber-free.
  • Polymer fibrids differ in their outer and inner morphological structure due to their different lengths (about 0.5 to 10 / um) compared to cut staple fibers and a specific surface area in the range of 5 to 10 m 2 / g in comparison with layers of staple fibers in a tangled position with a specific surface area of approx. 0.2 to approx. 0.5 m 2 / g each considerably different from such fabrics, which consist of conventional Staple fibers exist in a random arrangement.
  • Resonator sheets made of polymer fibrids are by definition open-pore.
  • Sheet-like flat structures made of polymer fibrids are not per se the subject of the present invention, they are described in the journal "Angewandte Chemie” 1978, number 11, pages 833 to 926.
  • sheet-like structure is used with the same technical meaning as the terms “film”, “sheet”, “sheet-like blank” or “plate”.
  • the resonator sheet in the form of a perforated and designed plastic film can consist of plasticizer-free polyvinyl chloride, it can be transparent or translucent.
  • Perforated films of the named thickness which consist of cellulose triacetate, can also be used as resonator sheets.
  • the cavity cavity-dividing cavity structure, the shape and area dimension of the shape and dimension of the cavity cross-sectional area are adapted, with their circumferential surfaces in each case directly adjoin the inside of the hollow body in such a way that there is no free space between the circumferential surfaces of the resonator flat structures and the inside of the hollow body.
  • the resonator sheets either extend in planes that run parallel to the hollow end faces or form an angle with them.
  • two resonator surface structures in the hollow body cavity it is also possible, for example, that one extends in a plane parallel to the hollow body end faces - to which the longitudinal axis of the hollow body forms a right angle in each case - and the other extends in a plane which is at an angle with this forms.
  • resonator flat structures in the hollow body cavity takes place, for example, in that holding elements for the resonator flat structures, for example holding strips, are provided in the cavity.
  • the esonator vomgechane for the respective R provided holding elements are formed parallel to the hollow body longitudinal axis displaceable, for example in that the holding elements on rails run, extending within the receptacle cavity longitudinally axially along the hollow body interior side and are secured thereto.
  • the resonator sheets in the hollow body cavity can NEN can also be mounted in a frame that is longitudinally axially displaceable in the cavity in the manner mentioned.
  • a hollow body with a sound-absorbing integral bottom and, for example, two resonator surface structures in its cavity these are selected with regard to their material and structural structure and are arranged in the cavity of the hollow body at such a distance from one another and in each case at a distance from the reverberant integral bottom of the hollow body such that the maximum of the curve of the sound absorption capacity as a function of the sound frequency of the one resonator sheet is in position with the minimum of the curve of the sound absorption capacity as a function of the sound frequency of the other resonator sheet.
  • Hollow bodies with a sound-hard integral floor comprising resonator sound absorption elements can be used as intended in such a way that they are fastened to a wall or to a ceiling of a room in such a way that the outward-facing side of the integral hollow floor is immediately adjacent to the wall or the ceiling. It is also possible to form a partition from a plurality of the designated resonator sound absorption elements, in the case of which the base end faces are aligned or are joined together to form a columnar body in such a way that the outside faces thereof are formed by the front end faces of the resonator sound absorption elements.
  • the designated resonator sound absorption elements can also be used as so-called “aprons" as intended in rooms.
  • the location of the respective minima or maxima of the sound absorption characteristic of the Resonator vomgesente depend on the respective distances of the same integral of the reverberant bottom of the hollow body or on both ends, open hollow body with one or more R esonator vomgesenten in its cavity, the distance between the rigid wall on which the hollow body is attached, and can be shifted to larger or smaller wavelengths by increasing or decreasing this distance in such a way that the sound absorption capacity is selected by suitable selection of two resonator surface structures which are particularly suitable for the respective individual case in combination and their spatial arrangement for the reverberant hardness integra len bottom of the hollow body or to the reverberant wall is optimized.
  • the sound absorption characteristic of the resonator fabrics can be determined in a simple manner by measuring the degree of absorption in accordance with DIN regulation 52 212 or DIN regulation 52 215.
  • resonator sheets made of cellulose hydrate films with an open-pore structure can be constructed in such a way that lead balls are contained in the sheet evenly distributed.
  • the open-pore structured resonator flat structures based on cellulose hydrate can have a rough, irregularly structured surface.
  • the surfaces thereof can be protected by thin, flexible films which are to be arranged at a distance from the resonator sheet.
  • the resonator fabrics can be combined with airborne sound-absorbing fabrics, for example layers of open-pore polyurethane foam or layers of mineral wool.
  • the sound absorption effect of the resonator sheets can also be increased by dimensioning and designing them in such a way that they line the inside of the wall of the hollow body.
  • the resonator flat structures are designed in such a way that they each have an area of approximately 10 ⁇ 10 cm, deep resonance drops in the sound absorption characteristic of the sound absorption element are particularly advantageously avoided.
  • the surfaces of the resonator fabrics which are visible when the products are used as intended can advantageously have optically visible, colored information or decorative or pictorial motifs by printing.
  • Sound absorption elements advantageously those in which the casing is frame-like and in which the surfaces facing outward show information, decorative patterns and pictorial representations, can be used, for example, as sound-absorbing advertising media, as sound-absorbing signs, particularly as sound-absorbing images for decorating rooms .
  • the product according to the invention can be used in living and office spaces, workshops and workshops or also outdoors wherever sound waves with a disturbing frequency or intensity are to be eliminated.
  • the hollow body is open at one end and has a reverberant integral bottom at the other.
  • the hollow body and its base are made of plasticizer-free polyvinyl chloride.
  • the first resonator sheet has a distance of 5 cm from the inside of the flat, reverberant hollow body floor, it consists of perforated film made of plasticizer-free PVC, which has a thickness of 150 / um and is characterized by an elastic modulus of 30,000 daN / cm 2 .
  • the diameter of the resonator sheet is matched to the diameter of the hollow body cavity.
  • the perforation openings of the film are limited in a circle and each have a diameter of 1 mm.
  • the total perforated portion of the film is 0.3% of the total area of a surface of the film.
  • the second resonator sheet has a distance of 10 cm from the inside of the reverberant integral hollow body floor. It consists of an open-pore structured film with a thickness of 2.6 mm made of cellulose hydrate.
  • the structurally structural structure of the open-cell structure of cellulose hydrate is characterized by a flow resistance to air of 710 Ns / m 3 .
  • the two resonator sheets run parallel to one another and in each case parallel to the hollow body floor.
  • the sound absorption characteristic of the resonator sound absorption element specified above is represented by the curve according to FIG.
  • the hollow body mouth opening opposite the hollow body floor is covered by a perforated cover plate which is advantageously fastened to the front edge of the hollow body; the total perforation area of the cover is at least 15% of the total area of the cover plate.
  • the first resonator sheet has a distance of 7 cm from the hollow body bottom, the distance of the second resonator sheet from it is 10 cm.
  • the sound absorption effect of the resonator sound absorption element is represented by the curve according to FIG. II.
  • a third variant of the invention is characterized in that the hollow body of the product is open at both ends, but is otherwise shaped and dimensioned as indicated in variants I and II.
  • the third variant of the invention comprises two hollow body cavity dividing sheet and the first Resonator perennialgesente consists of a perforated film made of unplasticized polyvinyl chloride, the order and has a thickness of 150 / an E-modulus of 30, 000 daN / cm2.
  • the perforation openings of the film are limited in a circle and have a diameter of 1 mm.
  • the total perforated portion of the film is 0.3 based on the total surface of one side of the film.
  • the second resonator sheet consists, for example, of an open-pore structured film made of cellulose hydrate, which has a thickness of approximately 2.6 mm.
  • the film has a flow resistance of 710 Ns / m 2 .
  • the distance of the first resonator sheet from the base end face of the hollow body is 5 cm, the distance of the second resonator sheet from this is 10 cm.
  • the resonator sound absorption element When used as intended, the resonator sound absorption element is fastened to a reverberant wall in such a way that its base end face or its base peripheral edge directly adjoins the reverberant wall.
  • the sound absorption effect of the third variant of the product according to the invention corresponds to the explained first variant of the invention.
  • a fourth modification of the invention consists in that both resonator flat structures of the resonator sound absorption element consist of perforated plastic films, each of which is designed in accordance with the first variant of the invention; the hollow body corresponds to that of the third variant of the invention.
  • the first resonator sheet is at a distance of 7 cm from the base end face or the base peripheral edge of the hollow body, while the second resonator sheet is at a distance of 10 cm from the latter.
  • the sound absorption capacity of the designated sound absorption element in cooperation with a flat, reverberant wall to which it is attached when it is used as intended corresponds to that the second variant of the invention.
  • Resonator sound absorption elements which only have resonator sheets in the form of perforated plastic films in their cavity, can also be designed such that both the hollow body and the resonator sheets are each transparent or translucent.
  • V Another variant of the product according to the invention is designed such that the hollow body is open at both ends and only a single resonator sheet is fastened in its cavity.
  • the hollow body consists, for example, of a rectangular wooden frame, the height of which has a width of, for example, 8 cm over the entire circumference of the frame.
  • a resonator sheet is arranged, which has an open-pore structure and is made of cellulose hydrate and is practically fiber-free; it is in a practically dry state.
  • the designated sound absorption element is arranged in the cavity of the jacket of the resonator sound absorption element in such a way that its surfaces each run in planes that are each parallel extend away from the hollow body end faces or the hollow body peripheral edges.
  • the distance of the surface of the resonator sheet from the base peripheral edge of the hollow body, which, when the product is used as intended, directly adjoins the reverberant wall to which it is attached, is, for example, 10 cm.
  • the surfaces of the peripheral edges of hollow bodies are preferably each flat; each peripheral edge surface of a hollow body preferably extends in a single plane.
  • the hollow body is realized by, for example, a rectangular wooden slat frame.
  • the flat surfaces of the slatted frame form the peripheral edge surfaces of the same.
  • the inner edges of the peripheral edges each limit the mouth openings of the hollow body cavity.
  • a resonator sheet is attached to one of the peripheral edge surfaces of the slat frame, the dimension of which corresponds to the dimension of the area delimited by the outer edge of the frame.
  • the resonator sheet can be attached to the slat frame, for example, by nailing, stapling or gluing.
  • the resonator sheet preferably consists of an open-pore, structured, practically fiber-free sheet of cellulose hydrate in a practically dry state; the fabric has a thickness in the range of 1 to 4 mm and is characterized by the specified flow resistance.
  • the product according to the invention in the form of a slatted frame with a resonator sheet attached to it as stated is attached in connection with a reverberant wall, for example the wall or ceiling of a room to which it is attached.
  • the front face of the embodiment of the invention referred to is formed by that surface of the R esonator vomgesentes attached to the one peripheral edge surface of the slatted base, to their intended in use sound waves strike first.
  • the base face of the designated product is the one that directly adjoins the reverberant wall.
  • the special variant of the invention is attached to a reverberant wall; in cooperation with this, the result sought according to the invention can be realized.
  • FIGS. 3, 4 and 5 each indicate the direction in which sound waves strike the front end planes of the jacket.
  • 1 means the resonator sound absorption element in its entirety
  • 2 the hollow body with a circular cross section
  • 3 the reverberant integral hollow body floor, the outside of which forms the hollow body base end face
  • 4 is the front end face Boundary edge of the hollow body and 5 the front end face of the same
  • 6 is the hollow body cavity, which is subdivided by the resonator surface structures 7 and 8
  • the resonator surface structure 7 is a flat, flat-shaped workpiece with an open-pore structure
  • the resonator surface structure 8 consists of a perforated plastic film, the perforation openings denoted therein by 9, 10 is a perforated cover plate which delimits the hollow space of the hollow body in the region of the front end face thereof, 11 are perforation openings in the cover plate 10
  • 12 is the peripheral edge of the hollow body at the base end
  • 13 is a circumferential flange edge projecting from the hollow body
  • 14 a fastening element for fastening the hollow body
  • 16 denotes the resonator sound absorption element in its entirety
  • 17 the hollow body which is open at both ends
  • 18 the hollow body cavity
  • 19 the front edge of the hollow body and 20 the base edge of the hollow body
  • 21 and 22 are resonator flat structures in the cavity 18 of the hollow body, each of which divides them
  • the resonator sheet 21 is a flat, planar workpiece with an open-pore structure and the resonator sheet 22 is a perforated plastic film with perforation openings
  • 24 is a flange edge that extends around the hollow body and projects outward
  • 25 a fastening element by means of which the hollow body is fastened to a reverberant wall 26
  • 27 is a cover plate that delimits the cavity in the region of the front end face of the hollow body
  • 28 are perforation openings in the cover plate 27.
  • 29 denotes the resonator sound absorption element in its entirety
  • 30 the hollow body
  • 31 is the front end peripheral edge
  • 32 the front end face of the hollow body
  • 33 the front end cavity opening
  • 34 the base front end peripheral edge
  • 35 the base end face of the hollow body
  • 36 the base front end opening of the hollow body.
  • 37 represents the cavity of the hollow body 38 which in this arranged Resonator perennialgesente from open-pored structured Cellulosehydratfolie (sponge cloth based on cellulose hydrate)
  • 39 is a rigid wall on which the R is attached esonatorschallabsorptionselement
  • 40 are holding members and 41 screws, by means of which the Resonatorschallabsorptionselement attached to the reverberant wall.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
EP81106377A 1980-08-27 1981-08-17 Elément résonnant absorbant le son Expired EP0046559B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803032269 DE3032269A1 (de) 1980-08-27 1980-08-27 Resonatorschallabsorptionselement
DE3032269 1980-08-27

Publications (3)

Publication Number Publication Date
EP0046559A2 true EP0046559A2 (fr) 1982-03-03
EP0046559A3 EP0046559A3 (en) 1982-11-03
EP0046559B1 EP0046559B1 (fr) 1985-06-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106377A Expired EP0046559B1 (fr) 1980-08-27 1981-08-17 Elément résonnant absorbant le son

Country Status (2)

Country Link
EP (1) EP0046559B1 (fr)
DE (2) DE3032269A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086184A3 (fr) * 1982-02-03 1984-05-02 Krister Amnéus Dispositif d'amortissement sonore
EP0700030A3 (fr) * 1994-08-31 1996-04-24 Mitsubishi Electric Home Appl Procédé pour absorber le son utilisant un matériau poreux
DE19616080A1 (de) * 1995-04-25 1996-11-14 Paschke Fritz Prof Univ Dr Schallfiltervorrichtung
CN102543061A (zh) * 2012-01-20 2012-07-04 江苏大学 薄膜机械阻抗与微穿孔板声阻抗结合的宽频吸声结构
WO2014102473A1 (fr) * 2012-12-31 2014-07-03 Jean-Marc Scherrer Ensemble etanche et acoustiquement absorbant pour fausse paroi
WO2020178427A1 (fr) * 2019-03-07 2020-09-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Absorbeur acoustique, structure et utilisation d'un absorbeur acoustique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4312885A1 (de) * 1993-04-20 1994-10-27 Fraunhofer Ges Forschung Unterdecke
DE4408782A1 (de) * 1994-03-15 1995-09-21 Fraunhofer Ges Forschung Folien-Schallabsorber

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL42287C (fr) * 1933-12-12
FR1369361A (fr) * 1963-04-01 1964-08-14 Procédé pour améliorer l'isolation phonique des cloisons et cloisons mettant en oeuvre ce procédé
DE2263700A1 (de) * 1972-12-27 1974-07-04 Zieringer Philipp Kg Perforierte platte mit einseitig schalltransparenter abdeckung der perforation
FR2364310A1 (fr) * 1976-09-10 1978-04-07 Telediffusion Fse Element prefabrique et procede d'isolation et d'absorption acoustiques d'un local

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086184A3 (fr) * 1982-02-03 1984-05-02 Krister Amnéus Dispositif d'amortissement sonore
EP0700030A3 (fr) * 1994-08-31 1996-04-24 Mitsubishi Electric Home Appl Procédé pour absorber le son utilisant un matériau poreux
US5905234A (en) * 1994-08-31 1999-05-18 Mitsubishi Electric Home Appliance Co., Ltd. Sound absorbing mechanism using a porous material
US6109388A (en) * 1994-08-31 2000-08-29 Mitsubishi Electric Home Appliance Co., Ltd. Sound absorbing mechanism using a porous material
EP0952571A3 (fr) * 1994-08-31 2000-11-29 Mitsubishi Electric Home Appliance Co., Ltd Dispositif absorbant le son utilisant un matériau poreux
EP1343142A3 (fr) * 1994-08-31 2004-06-16 Mitsubishi Electric Home Appliance Co., Ltd Dispositif absorbant le son utilisant un matériau poreux
DE19616080A1 (de) * 1995-04-25 1996-11-14 Paschke Fritz Prof Univ Dr Schallfiltervorrichtung
CN102543061B (zh) * 2012-01-20 2013-08-21 江苏大学 薄膜机械阻抗与微穿孔板声阻抗结合的宽频吸声结构
CN102543061A (zh) * 2012-01-20 2012-07-04 江苏大学 薄膜机械阻抗与微穿孔板声阻抗结合的宽频吸声结构
WO2014102473A1 (fr) * 2012-12-31 2014-07-03 Jean-Marc Scherrer Ensemble etanche et acoustiquement absorbant pour fausse paroi
FR3000509A1 (fr) * 2012-12-31 2014-07-04 Jean-Marc Scherrer Ensemble etanche et acoustiquement absorbant pour fausse paroi
CN105051295A (zh) * 2012-12-31 2015-11-11 J-M·谢乐 用于假隔板的密封且吸声的组件
AU2013369101B2 (en) * 2012-12-31 2018-05-10 Jean-Marc Scherrer Hermetic and acoustically absorbent assembly for false wall
US10260231B2 (en) 2012-12-31 2019-04-16 Jean-Marc Scherrer Hermetic and acoustically absorbent assembly for a false partition
WO2020178427A1 (fr) * 2019-03-07 2020-09-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Absorbeur acoustique, structure et utilisation d'un absorbeur acoustique
EP3935624B1 (fr) 2019-03-07 2023-08-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Absorbeur acoustique, structure et utilisation d'un absorbeur acoustique

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Publication number Publication date
EP0046559B1 (fr) 1985-06-26
DE3032269A1 (de) 1982-04-08
EP0046559A3 (en) 1982-11-03
DE3171122D1 (en) 1985-08-01

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