EP2472018A1 - Acoustically absorbing assembly - Google Patents

Acoustically absorbing assembly Download PDF

Info

Publication number
EP2472018A1
EP2472018A1 EP11195991A EP11195991A EP2472018A1 EP 2472018 A1 EP2472018 A1 EP 2472018A1 EP 11195991 A EP11195991 A EP 11195991A EP 11195991 A EP11195991 A EP 11195991A EP 2472018 A1 EP2472018 A1 EP 2472018A1
Authority
EP
European Patent Office
Prior art keywords
micro
perforations
supports
acoustic
acoustic assembly
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
EP11195991A
Other languages
German (de)
French (fr)
Other versions
EP2472018B1 (en
Inventor
Jean-Marc Scherrer
Christian Nocke
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.)
Normalu SAS
Original Assignee
Normalu SAS
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 Normalu SAS filed Critical Normalu SAS
Priority to PL11195991T priority Critical patent/PL2472018T3/en
Publication of EP2472018A1 publication Critical patent/EP2472018A1/en
Application granted granted Critical
Publication of EP2472018B1 publication Critical patent/EP2472018B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
    • 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
    • E04B1/8409—Sound-absorbing elements sheet-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/30—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall
    • E04B9/303—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall for flexible tensioned membranes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/002—Coverings or linings, e.g. for walls or ceilings made of webs, e.g. of fabrics, or wallpaper, used as coverings or linings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0867—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having acoustic absorption means on the visible surface
    • 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
    • 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
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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
    • E04B2001/8263—Mounting of acoustical elements on supporting structure, e.g. framework or wall surface
    • E04B2001/8281—Flat elements mounted parallel to a supporting surface with an acoustically active air gap between the elements and the mounting surface

Definitions

  • the present invention relates to an acoustically absorbent assembly intended to constitute a wall element disposed in an enclosure, such as for example an apartment, a concert hall, the passenger compartment of a vehicle, etc., and for controlling the state of sound absorption of it.
  • the absorption spectrum that is to say the curve representing the variation of the absorption of the global wall as a function of the sound frequency emitted, is related to the diameter of the micro-perforations, and that all the parameters being equal, the ⁇ global absorption was better in the high frequencies when the diameters of the micro-perforations were greater. Conversely, for micro-perforations of smaller diameter absorption was improved at low frequencies.
  • an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising one or two supports provided with micro-perforations whose diameter is less than 2 mm, remarkable in that that or the supports extend substantially parallel to an adjacent wall, and the acoustic assembly comprises at least two sets of micro-perforations distributed on said support.
  • the acoustic assembly described above is less effective for the absorption of frequencies between 4000 and 8000 Hz.
  • the object of the present invention is to provide an acoustic assembly having an enlarged sound absorption band with respect to acoustic assemblies of the prior art, this acoustic assembly being intended to constitute, for example, a false wall of a room that is ie a partition or a ceiling, but also a lining of a vehicle etc.
  • the subject of the present invention is thus an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising at least two supports provided with micro-perforations, remarkable in that said supports are superimposed.
  • said supports do not comprise several series of micro-perforations having different diameters.
  • the acoustic assembly may consist of two supports (rigid wall or stretched fabric) each provided with a series of orifices which are distributed in a regular manner on the surface said supports forming respective meshes either of square shape or of triangular shape.
  • This acoustic unit retains its acoustic absorption capacity even when it is placed behind a support that does not include micro-perforations or when it frames a support that does not include micro-perforations.
  • the present application also relates to an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising a support comprising no micro-perforations, at least two supports provided with a microphone.
  • the visible element consists of the support not comprising micro-perforations. This is particularly advantageous because it is thus possible to exploit the aesthetic virtues (for example printing, lacquering) of the support element which does not include micro-perforations.
  • the present application also relates to an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising a support comprising no micro-perforations, at least two supports provided with micro-perforations. perforations, characterized in that said supports are superimposed.
  • the acoustic assembly according to the invention consists of at least three parallel supports each comprising a series of micro-perforations, as defined above, remarkable in that said supports are superimposed.
  • the acoustic assembly according to the invention consists of three parallel supports each comprising a series of micro-perforations, remarkable in that said supports are superimposed.
  • the support comprising a series of micro-perforations closest to the adjacent wall is preferably 50 mm away from the support having a series of contiguous micro-perforations.
  • the support comprising a series of micro-perforations farthest from the adjacent wall is preferably 30 mm apart from the support comprising a series of contiguous micro-perforations.
  • said supports extend substantially parallel to each other.
  • said supports are in planes forming between them an angle of between 1 and 45 degrees.
  • the supports of the acoustic assembly according to the invention consist of stretched sheets, in particular made of polyvinyl chloride (PVC) films, the thickness of which will preferably be between 0.1 and 0.3 mm, but may also be be formed of rigid elements.
  • PVC polyvinyl chloride
  • the supports of the acoustic assembly according to the invention consist of textiles or other flexible or rigid materials.
  • the distance between the various supports each comprising a series of micro-perforations is preferably between 10 and 90 mm and even more preferably between 20 and 60 mm.
  • the distance between the acoustic assembly according to the invention and said adjacent wall is preferably between 100 and 400 mm and even more preferably between 250 and 350 mm.
  • the micro-perforations are circular in shape and preferentially distributed in a mesh of square, triangular or rectangular shape.
  • the micro-perforations have a diameter of less than 2 mm, even more preferentially less than 1 mm and quite preferentially less than or equal to 0.5 mm.
  • the supports comprising a series of micro-perforations have a micro-perforation density greater than 1000 micro-perforations / m 2 , plus preferably greater than 30 000 micro-perforations / m 2 , even more preferably greater than 300 000 micro-perforations / m 2 and quite preferably greater than 400 000 micro-perforations / m 2 .
  • Those skilled in the art are able to determine the optimal micro-perforation density as a function of. This may in particular be adapted according to the nature of the material constituting said support.
  • the supports used in the context of the present invention are advantageously provided with a peripheral edge forming a harpoon. Said harpoon allows the fixing of the supports according to the invention to longitudinal members.
  • said spar is a smooth.
  • all the supports included in the acoustic assembly according to the invention are fixed on the same rail.
  • FIG. 1 a canvas 3, implemented in particular to figures 2 , 4 , 6 and 8 , which is provided with micro-perforations d1 which are evenly distributed over its entire surface (300 000 micro-perforations / m2). These perforations, which are circular in shape, have a diameter of 0.2 mm.
  • the figures 2 and 4 show a first embodiment of the acoustic assembly 1 according to the invention.
  • This assembly comprises a support not comprising micro-perforations 2 (here a PVC stretched fabric) and two supports provided with micro-perforations 3 as described in FIG. figure 1 . All of these supports extend substantially parallel to an adjacent wall and the supports provided with micro-perforations are placed between the support comprising no micro-perforations and an adjacent wall.
  • the spaces delimited by the supports are open towards the outside.
  • the spaces delimited by the supports are closed.
  • the absorption maximum of this set is at a frequency of the order of 1000 Hz and that for an absorption of 0.5 it extends to a frequency of approximately 500. Hz up to about 2,500 Hz, or about a frequency range of the order of 2000 Hz.
  • the absorption maximum of this set 1 is at a frequency of the order of 800 Hz and that for an absorption of 0.5 it ranges from a frequency of approximately 150 Hz up to about 1800 Hz, or about a frequency range of the order of 1.650 Hz.
  • the figures 6 and 8 show another embodiment of the acoustic assembly 1 according to the invention.
  • This acoustic assembly consists of three parallel supports 3 each having a series of micro-perforations whose diameter is less than 2mm. In the case presented to figure 6 the spaces delimited by the supports 3 are open towards the outside. In the case presented to figure 8 the spaces delimited by the supports 3 are closed.
  • FIG. figure 7 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 represented in FIG. figure 6 thus constituted according to the sound frequency applied. It can thus be seen in this figure that an absorption maximum of this set is at a frequency of 1000 Hz and 8000 Hz and that for an absorption of 0.5 it extends to a frequency of approximately 300. Hz up to about 8000 Hz, or about a frequency range of the order of 7300 Hz.
  • FIG. figure 9 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 represented in FIG. figure 8 thus constituted according to the sound frequency applied. It can thus be seen from this figure that the absorption maximum of this set 1 is at a frequency of the order of 2000 Hz and that for an absorption of 0.5 it extends with a frequency of about 140 Hz up to about 5000 Hz, or about a frequency interval of the order of 4860 Hz.
  • the present invention therefore makes it possible to substantially extend the width of the sound spectrum for which the absorption obtained is effective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
  • Percussion Or Vibration Massage (AREA)

Abstract

The assembly (1) has two supports (3) formed with micro-perforations, and a support (2) formed without micro-perforations. The support without micro-perforations is not enclosed by the supports with micro-perforations. The supports with micro-perforations are superimposed with each other. The supports are formed of tensed layers constituted of films made of PVC. The supports consist of textile materials or any other flexible or rigid materials, where distance between the supports with micro-perforations is comprised between 10 and 90 mm.

Description

Domaine techniqueTechnical area

La présente invention concerne un ensemble acoustiquement absorbant destiné à constituer un élément de paroi disposé dans une enceinte, telle que par exemple un appartement, une salle de concert, l'habitacle d'un véhicule etc., et permettant de contrôler l'état d'absorption acoustique de celle-ci.The present invention relates to an acoustically absorbent assembly intended to constitute a wall element disposed in an enclosure, such as for example an apartment, a concert hall, the passenger compartment of a vehicle, etc., and for controlling the state of sound absorption of it.

Technique antérieurePrior art

On sait que le contrôle de l'absorption des sons par des parois a fait appel à des dispositifs divers comprenant des éléments d'absorption passifs constitués de matériaux poreux présentant la propriété de transformer en chaleur les vibrations sonores qu'ils recevaient en raison des phénomènes de friction auxquels ces matériaux étaient soumis du fait de ces vibrations.It is known that the control of the absorption of sounds by walls has made use of various devices comprising passive absorption elements made of porous materials having the property of transforming into heat the sound vibrations they received due to the phenomena of friction to which these materials were subjected because of these vibrations.

On sait que l'utilisation de tels éléments absorbants présente un certain nombre d'inconvénients, à savoir notamment leur encombrement et leur poids ainsi que leur faculté de n'absorber les vibrations sonores que dans des domaines réduits du spectre.It is known that the use of such absorbent elements has a certain number of disadvantages, namely in particular their bulk and weight and their ability to absorb sound vibrations only in small areas of the spectrum.

On a également proposé de faire appel à des éléments de paroi rigides perforés d'une série de trous répartis régulièrement sur leur surface, ces trous perforés ayant des diamètres de l'ordre de 5 à 6 mm. On a constaté que de tels éléments absorbants présentaient de notables inconvénients et notamment une très faible efficacité s'ils n'étaient combinés à des éléments poreux.It has also been proposed to use rigid wall elements perforated with a series of holes regularly distributed on their surface, these perforated holes having diameters of the order of 5 to 6 mm. It has been found that such absorbent elements have significant drawbacks and in particular a very low efficiency if they were not combined with porous elements.

Il a été établi que l'on pouvait déterminer une impédance acoustique Z de l'ensemble constitué de la toile et du volume d'air compris entre celle-ci et la paroi arrière pleine de sorte que l'on a : Z MPP = r + jωm impédence de la toile

Figure imgb0001
Z air = - jcot ( ωD / c 0 ⁢ cos θ impédence de l ′ air
Figure imgb0002
 Z θ = Z air θ + Z mpp cosθ
Figure imgb0003
 It has been established that it is possible to determine an acoustic impedance Z of the assembly consisting of the fabric and the volume of air between it and the solid rear wall so that one has: Z MPP = r + jωm impedance of the canvas
Figure imgb0001
 Z air = - jcot ( ωD / vs 0 ⁢ cos θ impedence of the ' air
Figure imgb0002
 Z θ = Z air θ + Z mPP cos
Figure imgb0003

On obtient ainsi le coefficient d'absorption α(θ) c'est-à-dire l'impédance pour un panneau d'incidence θ déterminé : α θ = 4 ⁢ Re Z θ / 1 + Re Z MPA θ 2 + lm Z θ 2

Figure imgb0004

et de façon statistique en intégrant la valeur de α(θ) on obtient l'absorption globale d'un panneau, à savoir: α globale = ∫ o ⁢ ° α θ . sin 2 ⁢ θ . dθ
Figure imgb0005
 This gives the absorption coefficient α (θ), that is to say the impedance for a given panel of incidence θ: α θ = 4 ⁢ Re Z θ / 1 + Re Z MPA θ 2 + lm Z θ 2
Figure imgb0004
and statistically integrating the value of α (θ) we obtain the overall absorption of a panel, namely: α overall = ∫ o ⁢ ° α θ . sin 2 ⁢ θ . dθ
Figure imgb0005

On a ainsi été établi que le spectre d'absorption, c'est-à-dire la courbe représentant la variation de l'absorption de la paroi αglobale en fonction de la fréquence sonore émise est liée au diamètre des micro-perforations, et que, tous les paramètres étant égaux par ailleurs, l'absorption αglobale était meilleure dans les hautes fréquences lorsque les diamètres des micro-perforations étaient plus importants. A l'inverse, pour des micro-perforations de plus faible diamètre l'absorption était améliorée dans les basses fréquences.It has thus been established that the absorption spectrum, that is to say the curve representing the variation of the absorption of the global wall as a function of the sound frequency emitted, is related to the diameter of the micro-perforations, and that all the parameters being equal, the αglobal absorption was better in the high frequencies when the diameters of the micro-perforations were greater. Conversely, for micro-perforations of smaller diameter absorption was improved at low frequencies.

Il a été proposé dans la demande PCT/FR2006/001940 d'utiliser un ensemble absorbant acoustique destiné à constituer, à l'intérieur d'une enceinte, au moins un élément de paroi, cet ensemble comportant un ou deux supports pourvus de micro-perforations dont le diamètre est inférieur à 2mm, remarquable en ce que le ou les supports s'étendent sensiblement parallèlement à une paroi adjacente, et l'ensemble acoustique comprend au moins deux séries de micro-perforations se distribuant sur ledit support.It was proposed in the application PCT / FR2006 / 001940 to use an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising one or two supports provided with micro-perforations whose diameter is less than 2 mm, remarkable in that that or the supports extend substantially parallel to an adjacent wall, and the acoustic assembly comprises at least two sets of micro-perforations distributed on said support.

Bien que particulièrement performant pour l'absorption des fréquences comprises entre 300 et 4000 Hz, l'ensemble acoustique décrit ci-dessus est moins efficace pour l'absorption des fréquences comprises entre 4000 et 8000 Hz.Although particularly efficient for the absorption of frequencies between 300 and 4000 Hz, the acoustic assembly described above is less effective for the absorption of frequencies between 4000 and 8000 Hz.

Exposé de l'inventionPresentation of the invention

La présente invention a pour but de proposer un ensemble acoustique ayant une bande d'absorption acoustique élargie par rapport aux ensembles acoustiques de l'art antérieur, cet ensemble acoustique étant destiné à constituer par exemple une fausse paroi d'une pièce c'est-à-dire une cloison ou un plafond, mais également un revêtement intérieur d'un véhicule etc.The object of the present invention is to provide an acoustic assembly having an enlarged sound absorption band with respect to acoustic assemblies of the prior art, this acoustic assembly being intended to constitute, for example, a false wall of a room that is ie a partition or a ceiling, but also a lining of a vehicle etc.

La présente invention a ainsi pour objet un ensemble absorbant acoustique destiné à constituer, à l'intérieur d'une enceinte, au moins un élément de paroi, cet ensemble comportant au moins deux supports pourvus de micro-perforations, remarquable en ce que lesdits supports sont superposées.The subject of the present invention is thus an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising at least two supports provided with micro-perforations, remarkable in that said supports are superimposed.

Selon un mode de réalisation préféré de l'invention, lesdits supports ne comprennent pas plusieurs séries de micro-perforations ayant des diamètres différents.According to a preferred embodiment of the invention, said supports do not comprise several series of micro-perforations having different diameters.

Ainsi, dans un premier mode de mise en oeuvre de l'invention, l'ensemble acoustique pourra être constitué de deux supports (paroi rigide ou toile tendue) pourvue chacun d'une série d'orifices qui se distribuent de façon régulière sur la surface desdits supports en formant des maillages respectifs soit de forme carrée soit de forme triangulaire. Le déposant a mis en évidence que cet ensemble acoustique conservait sa capacité d'absorption acoustique même lorsqu'il est placé derrière un support ne comprenant pas de micro-perforations ou lorsqu'il encadre un support ne comprenant pas de micro-perforations. Ainsi la présente demande concerne également un ensemble absorbant acoustique destiné à constituer, à l'intérieur d'une enceinte, au moins un élément de paroi, cet ensemble comportant un support ne comprenant pas de micro-perforations, au moins deux supports pourvus de micro-perforations, caractérisé en ce que lesdits supports sont superposés et en ce que le support ne comprenant pas de micro-perforations n'est pas encadré par les supports pourvus de micro-perforations. Dans ce mode de réalisation particulier, l'élément visible est constitué du support ne comprenant pas de micro-perforations. Ceci est particulièrement avantageux, car il est ainsi possible d'exploiter les vertus esthétiques (par exemple impression, laquage) de l'élément de support ne comprenant pas de micro-perforations.Thus, in a first embodiment of the invention, the acoustic assembly may consist of two supports (rigid wall or stretched fabric) each provided with a series of orifices which are distributed in a regular manner on the surface said supports forming respective meshes either of square shape or of triangular shape. The applicant has shown that this acoustic unit retains its acoustic absorption capacity even when it is placed behind a support that does not include micro-perforations or when it frames a support that does not include micro-perforations. Thus, the present application also relates to an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising a support comprising no micro-perforations, at least two supports provided with a microphone. -perforations, characterized in that said supports are superimposed and in that the support does not comprise micro-perforations is not framed by the supports provided micro-perforations. In this particular embodiment, the visible element consists of the support not comprising micro-perforations. This is particularly advantageous because it is thus possible to exploit the aesthetic virtues (for example printing, lacquering) of the support element which does not include micro-perforations.

La présente demande concerne également un ensemble absorbant acoustique destiné à constituer, à l'intérieur d'une enceinte, au moins un élément de paroi, cet ensemble comportant un support ne comprenant pas de micro-perforations, au moins deux supports pourvus de micro-perforations, caractérisé en ce que lesdits supports sont superposés .The present application also relates to an acoustic absorbent assembly intended to constitute, within an enclosure, at least one wall element, this assembly comprising a support comprising no micro-perforations, at least two supports provided with micro-perforations. perforations, characterized in that said supports are superimposed.

Selon un mode de réalisation particulièrement préféré, l'ensemble acoustique selon l'invention est constitué d'au moins trois supports parallèles comportant chacun une série de micro-perforations, tel que défini précédemment, remarquable en ce que lesdits supports sont superposés.According to a particularly preferred embodiment, the acoustic assembly according to the invention consists of at least three parallel supports each comprising a series of micro-perforations, as defined above, remarkable in that said supports are superimposed.

Selon une mode de réalisation encore plus préféré, l'ensemble acoustique selon l'invention est constitué de trois supports parallèles comportant chacun une série de micro-perforations, remarquable en ce que lesdits supports sont superposés.According to an even more preferred embodiment, the acoustic assembly according to the invention consists of three parallel supports each comprising a series of micro-perforations, remarkable in that said supports are superimposed.

Dans ce mode de réalisation, lorsque que l'ensemble acoustique selon l'invention est placé à proximité d'une paroi adjacente, le support comportant une série de micro-perforations le plus proche de la paroi adjacente est préférentiellement distante de 50 mm du support comportant une série de micro-perforations contigüe. Le support comportant une série de micro-perforations le plus éloigné de la paroi adjacente est préférentiellement distante de 30 mm du support comportant une série de micro-perforations contigüe.In this embodiment, when the acoustic assembly according to the invention is placed close to an adjacent wall, the support comprising a series of micro-perforations closest to the adjacent wall is preferably 50 mm away from the support having a series of contiguous micro-perforations. The support comprising a series of micro-perforations farthest from the adjacent wall is preferably 30 mm apart from the support comprising a series of contiguous micro-perforations.

Dans le cadre de la présente invention, le terme « superposé » n'implique pas que lesdits supports sont en contact les uns avec les autres sur tout ou partie de leur surface.In the context of the present invention, the term "superimposed" does not imply that said supports are in contact with each other on all or part of their surface.

Selon un mode de réalisation préféré de l'invention, lesdits supports s'étendent sensiblement parallèlement les uns par rapport aux autres.According to a preferred embodiment of the invention, said supports extend substantially parallel to each other.

Selon un autre mode de réalisation préféré de l'invention lesdits supports s'inscrivent dans des plans formant entre eux un angle compris entre 1 et 45 degrés.According to another preferred embodiment of the invention said supports are in planes forming between them an angle of between 1 and 45 degrees.

Préférentiellement les supports de l'ensemble acoustique suivant l'invention sont constitués de nappes tendues, notamment constituées de films en polychlorure de vinyle (PVC), dont l'épaisseur sera préférentiellement comprise entre 0,1 et 0,3 mm, mais pourront également être formés d'éléments rigides.Preferably, the supports of the acoustic assembly according to the invention consist of stretched sheets, in particular made of polyvinyl chloride (PVC) films, the thickness of which will preferably be between 0.1 and 0.3 mm, but may also be be formed of rigid elements.

Selon un autre mode de réalisation préféré les supports de l'ensemble acoustique suivant l'invention sont constitués de textiles ou de tous autres matériaux souples ou rigides.According to another preferred embodiment, the supports of the acoustic assembly according to the invention consist of textiles or other flexible or rigid materials.

La distance entre les différents supports comportant chacun une série de micro-perforations est préférentiellement comprise entre 10 et 90 mm et encore plus préférentiellement entre 20 et 60 mm.The distance between the various supports each comprising a series of micro-perforations is preferably between 10 and 90 mm and even more preferably between 20 and 60 mm.

Lorsque que l'ensemble acoustique selon l'invention est placé à proximité d'une paroi adjacente, la distance entre l'ensemble acoustique selon l'invention et ladite paroi adjacente est préférentiellement comprise entre 100 et 400 mm et encore plus préférentiellement entre 250 et 350 mm.When the acoustic assembly according to the invention is placed close to an adjacent wall, the distance between the acoustic assembly according to the invention and said adjacent wall is preferably between 100 and 400 mm and even more preferably between 250 and 350 mm.

Préférentiellement les micro-perforations sont de forme circulaire et se distribuent préférentiellement suivant un maillage de forme carrée, triangulaire ou rectangulaire.Preferentially, the micro-perforations are circular in shape and preferentially distributed in a mesh of square, triangular or rectangular shape.

Préférentiellement les micro-perforations ont un diamètre inférieur à 2mm, encore plus préférentiellement inférieur à 1mm et tout à fait préférentiellement inférieur ou égal à 0.5mm.Preferably, the micro-perforations have a diameter of less than 2 mm, even more preferentially less than 1 mm and quite preferentially less than or equal to 0.5 mm.

Préférentiellement, les supports comportant une série de micro-perforations ont une densité de micro-perforations supérieure 1000 micro-perforations/m2, plus préférentiellement supérieure à 30 000 micro-perforations/m2, encore plus préférentiellement supérieure à 300 000 micro-perforations/m2 et tout à fait préférentiellement supérieure à 400 000 micro-perforations/m2. L'homme du métier est à même de déterminer la densité de micro-perforations optimale en fonction de. Celle-ci peut être notamment adaptée en fonction de la nature du matériau constituant ledit support.Preferably, the supports comprising a series of micro-perforations have a micro-perforation density greater than 1000 micro-perforations / m 2 , plus preferably greater than 30 000 micro-perforations / m 2 , even more preferably greater than 300 000 micro-perforations / m 2 and quite preferably greater than 400 000 micro-perforations / m 2 . Those skilled in the art are able to determine the optimal micro-perforation density as a function of. This may in particular be adapted according to the nature of the material constituting said support.

Dans un mode de réalisation tout à fait préféré de l'invention les supports comportant une série de micro-perforations sont choisis dans le groupe comprenant :

  • les supports comprenant 30 000 micro-perforations/m2, et dont les micro-perforations ont un diamètre de 0.5mm,
  • les supports comprenant 300 000 micro-perforations/m2, et dont les micro-perforations ont un diamètre de 0.2mm,
  • les supports comprenant 400 000 micro-perforations/m2, et dont les micro-perforations ont un diamètre de 0.15mm et
  • les supports comprenant 500 000 micro-perforations/m2, et dont les micro-perforations ont un diamètre de 0,10 mm.
In a most preferred embodiment of the invention, the supports comprising a series of micro-perforations are chosen from the group comprising:
  • the supports comprising 30 000 micro-perforations / m 2 , and whose micro-perforations have a diameter of 0.5 mm,
  • the supports comprising 300 000 micro-perforations / m 2 , and whose micro-perforations have a diameter of 0.2 mm,
  • the supports comprising 400 000 micro-perforations / m 2 , and whose micro-perforations have a diameter of 0.15 mm and
  • the supports comprising 500 000 micro-perforations / m 2 , and whose micro-perforations have a diameter of 0.10 mm.

Les supports utilisés dans le cadre de la présente invention sont avantageusement pourvue d'une bordure périphérique formant un harpon. Ledit harpon permet la fixation des supports selon l'invention à des longerons.The supports used in the context of the present invention are advantageously provided with a peripheral edge forming a harpoon. Said harpoon allows the fixing of the supports according to the invention to longitudinal members.

Tout autre mode de fixation desdits supports est envisageable, parmi ceux-ci on peut notamment citer les clips et les agrafes.Any other method of fixing said supports is conceivable, among these we can notably mention clips and staples.

Selon un mode de réalisation préféré de l'invention, ledit longeron est une lisse. Selon un mode de réalisation encore plus préféré de l'invention, tous les supports compris dans l'ensemble acoustique selon l'invention sont fixés sur une même lisse.According to a preferred embodiment of the invention, said spar is a smooth. According to an even more preferred embodiment of the invention, all the supports included in the acoustic assembly according to the invention are fixed on the same rail.

Description sommaire des figuresBrief description of the figures

On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel :

  • la figure 1 est une vue partielle schématique en perspective d'un support micro-perforée utilisable dans le cadre de la présente invention.
  • la figure 2 est un dessin schématique en coupe verticale d'un exemple de disposition d'un ensemble acoustique selon l'invention par rapport à un plafond.
  • la figure 3 est un graphique représentant la variation d'un ensemble acoustique mise en oeuvre suivant la figure 2, en fonction de la fréquence sonore,
  • la figure 4 est un dessin schématique en coupe verticale d'un exemple de disposition d'un ensemble acoustique selon l'invention par rapport à un plafond.
  • la figure 5 est un graphique représentant la variation d'un ensemble acoustique mise en oeuvre suivant la figure 4, en fonction de la fréquence sonore,
  • la figure 6 est un dessin schématique en coupe verticale d'un exemple de disposition d'un ensemble acoustique selon l'invention par rapport à un plafond.
  • la figure 7 est un graphique représentant la variation d'un ensemble acoustique mise en oeuvre suivant la figure 6, en fonction de la fréquence sonore,
  • la figure 8 est un dessin schématique en coupe verticale d'un exemple de disposition d'un ensemble acoustique selon l'invention par rapport à un plafond.
  • la figure 9 est un graphique représentant la variation d'un ensemble acoustique mise en oeuvre suivant la figure 8, en fonction de la fréquence sonore,
As will be described below, by way of nonlimiting example, an embodiment of the present invention, with reference to the accompanying drawing in which:
  • the figure 1 is a schematic partial perspective view of a micro-perforated support used in the context of the present invention.
  • the figure 2 is a schematic drawing in vertical section of an example of arrangement of an acoustic assembly according to the invention with respect to a ceiling.
  • the figure 3 is a graph representing the variation of an acoustic set implemented according to the figure 2 , depending on the sound frequency,
  • the figure 4 is a schematic drawing in vertical section of an example of arrangement of an acoustic assembly according to the invention with respect to a ceiling.
  • the figure 5 is a graph representing the variation of an acoustic set implemented according to the figure 4 , depending on the sound frequency,
  • the figure 6 is a schematic drawing in vertical section of an example of arrangement of an acoustic assembly according to the invention with respect to a ceiling.
  • the figure 7 is a graph representing the variation of an acoustic set implemented according to the figure 6 , depending on the sound frequency,
  • the figure 8 is a schematic drawing in vertical section of an example of arrangement of an acoustic assembly according to the invention with respect to a ceiling.
  • the figure 9 is a graph representing the variation of an acoustic set implemented according to the figure 8 , depending on the sound frequency,

Meilleure manière de réaliser l'invention techniqueBest way to realize the technical invention

On a représenté sur la figure 1 une toile 3, mise en oeuvre notamment aux figures 2, 4, 6 et 8, qui est pourvue de micro-perforations d1 qui sont régulièrement réparties sur toute sa surface (300 000 micro-perforations/m2). Ces perforations, qui sont de forme circulaire, ont un diamètre de 0,2 mm.We have shown on the figure 1 a canvas 3, implemented in particular to figures 2 , 4 , 6 and 8 , which is provided with micro-perforations d1 which are evenly distributed over its entire surface (300 000 micro-perforations / m2). These perforations, which are circular in shape, have a diameter of 0.2 mm.

Les figures 2 et 4 présentent un premier mode de réalisation de l'ensemble acoustique 1 selon l'invention. Cet ensemble comporte un support ne comprenant pas de micro-perforations 2 (ici une toile tendu en PVC) et deux supports pourvus de micro-perforations 3 tels que décrits à la figure 1. Tous ces supports s'étendent sensiblement parallèlement à une paroi adjacente et les supports pourvus de micro-perforations sont placés entre le support ne comprenant pas de micro-perforations et une paroi adjacente. Dans le cas présenté à la figure 2, les espaces délimités par les supports sont ouverts vers l'extérieur. Dans le cas présenté à la figure 4, les espaces délimités par les supports sont fermés.The figures 2 and 4 show a first embodiment of the acoustic assembly 1 according to the invention. This assembly comprises a support not comprising micro-perforations 2 (here a PVC stretched fabric) and two supports provided with micro-perforations 3 as described in FIG. figure 1 . All of these supports extend substantially parallel to an adjacent wall and the supports provided with micro-perforations are placed between the support comprising no micro-perforations and an adjacent wall. In the case presented to figure 2 the spaces delimited by the supports are open towards the outside. In the case presented to figure 4 the spaces delimited by the supports are closed.

On a représenté sur la figure 3 un schéma montrant le spectre d'absorption obtenu par l'ensemble acoustique 1 représenté à la figure 2 ainsi constitué en fonction de la fréquence sonore appliquée. On constate ainsi sur cette figure que le maximum d'absorption de cet ensemble se situe à une fréquence de l'ordre de 1000 Hz et que pour une absorption de 0,5 celle-ci s'étend d'une fréquence d'environ 500 Hz jusqu'à environ 2.500 Hz, soit environ un intervalle de fréquence de l'ordre de 2000 Hz.We have shown on the figure 3 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 shown in FIG. figure 2 thus constituted according to the sound frequency applied. It can thus be seen from this figure that the absorption maximum of this set is at a frequency of the order of 1000 Hz and that for an absorption of 0.5 it extends to a frequency of approximately 500. Hz up to about 2,500 Hz, or about a frequency range of the order of 2000 Hz.

On a représenté sur la figure 5 un schéma montrant le spectre d'absorption obtenu par l'ensemble acoustique 1 représentée à la figure 4 ainsi constitué en fonction de la fréquence sonore appliquée. On constate ainsi sur cette figure que le maximum d'absorption de cet ensemble 1 se situe à une fréquence de l'ordre de 800 Hz et que pour une absorption de 0,5 celle-ci s'étend d'une fréquence d'environ 150 Hz jusqu'à environ 1800 Hz, soit environ un intervalle de fréquence de l'ordre de 1.650 Hz.We have shown on the figure 5 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 represented in FIG. figure 4 thus constituted according to the sound frequency applied. Thus, it can be seen from this figure that the absorption maximum of this set 1 is at a frequency of the order of 800 Hz and that for an absorption of 0.5 it ranges from a frequency of approximately 150 Hz up to about 1800 Hz, or about a frequency range of the order of 1.650 Hz.

Les résultats présentés aux figures 3 et 5 indiquent que l'ensemble acoustique 1 selon l'invention présente une efficacité au moins égale aux systèmes acoustiques de l'art antérieur, même lorsqu'il est placé derrière une toile tendu.The results presented to figures 3 and 5 indicate that the acoustic assembly 1 according to the invention has an efficiency at least equal to the acoustic systems of the art previous, even when placed behind a stretched canvas.

Les figures 6 et 8 présentent un autre mode de réalisation de l'ensemble acoustique 1 selon l'invention. Cet ensemble acoustique est constitué de trois supports parallèles 3 comportant chacun une série de micro-perforations dont le diamètre est inférieur à 2mm. Dans le cas présenté à la figure 6, les espaces délimités par les supports 3 sont ouverts vers l'extérieur. Dans le cas présenté à la figure 8, les espaces délimités par les supports 3 sont fermés.The figures 6 and 8 show another embodiment of the acoustic assembly 1 according to the invention. This acoustic assembly consists of three parallel supports 3 each having a series of micro-perforations whose diameter is less than 2mm. In the case presented to figure 6 the spaces delimited by the supports 3 are open towards the outside. In the case presented to figure 8 the spaces delimited by the supports 3 are closed.

On a représenté sur la figure 7 un schéma montrant le spectre d'absorption obtenu par l'ensemble acoustique 1 représentée à la figure 6 ainsi constitué en fonction de la fréquence sonore appliquée. On constate ainsi sur cette figure qu'un maximum d'absorption de cet ensemble se situe à une fréquence compris 1000 Hz et 8000 Hz et que pour une absorption de 0,5 celle-ci s'étend d'une fréquence d'environ 300 Hz jusqu'à environ 8000 Hz, soit environ un intervalle de fréquence de l'ordre de 7300 Hz.We have shown on the figure 7 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 represented in FIG. figure 6 thus constituted according to the sound frequency applied. It can thus be seen in this figure that an absorption maximum of this set is at a frequency of 1000 Hz and 8000 Hz and that for an absorption of 0.5 it extends to a frequency of approximately 300. Hz up to about 8000 Hz, or about a frequency range of the order of 7300 Hz.

On a représenté sur la figure 9 un schéma montrant le spectre d'absorption obtenu par l'ensemble acoustique 1 représentée à la figure 8 ainsi constitué en fonction de la fréquence sonore appliquée. On constate ainsi sur cette figure que le maximum d'absorption de cet ensemble 1 se situe à une fréquence de l'ordre de 2000 Hz et que pour une absorption de 0,5 celle-ci s'étend d'une fréquence d'environ 140 Hz jusqu'à environ 5000 Hz, soit environ un intervalle de fréquence de l'ordre de 4860 Hz.We have shown on the figure 9 a diagram showing the absorption spectrum obtained by the acoustic assembly 1 represented in FIG. figure 8 thus constituted according to the sound frequency applied. It can thus be seen from this figure that the absorption maximum of this set 1 is at a frequency of the order of 2000 Hz and that for an absorption of 0.5 it extends with a frequency of about 140 Hz up to about 5000 Hz, or about a frequency interval of the order of 4860 Hz.

On notera, dans ce mode de réalisation l'excellente efficacité de l'ensemble acoustique 1 pour l'absorption des fréquences supérieures à 2000 Hz, alors que les ensembles acoustiques de l'art antérieur étaient souvent déficients dans cette partie du spectre. La présente invention permet donc bien d'étendre de façon substantielle la largeur du spectre sonore pour lequel l'absorption obtenue est efficace.Note in this embodiment the excellent efficiency of the acoustic assembly 1 for the absorption of frequencies greater than 2000 Hz, while acoustic assemblies of the prior art were often deficient in this part of the spectrum. The present invention therefore makes it possible to substantially extend the width of the sound spectrum for which the absorption obtained is effective.

Claims (9)

Ensemble absorbant acoustique (1) destiné à constituer, à l'intérieur d'une enceinte, au moins un élément de paroi, cet ensemble (1) comportant au moins deux supports (3) pourvus de micro-perforations, un support (2) ne comprenant pas de micro-perforations caractérisé en ce que ledit support ne comprenant pas de micro-perforations (2) n'est pas encadré par les supports pourvus de micro-perforations et en ce que lesdits supports (3) sont superposés.Acoustic absorbing assembly (1) intended to form, inside an enclosure, at least one wall element, this assembly (1) comprising at least two supports (3) provided with micro-perforations, a support (2) not including micro-perforations characterized in that said support comprising no micro-perforations (2) is not framed by the supports provided with micro-perforations and in that said supports (3) are superimposed. Ensemble acoustique (1) caractérisé en qu'il est constitué d'au moins trois supports (3) parallèles comportant chacun une série de micro-perforations, caractérisé en ce que les supports (3) sont superposés.Acoustic assembly (1) characterized in that it consists of at least three parallel supports (3) each having a series of micro-perforations, characterized in that the supports (3) are superposed. Ensemble acoustique (1) selon l'une quelconque des revendications précédentes caractérisé en ce que les supports sont constitués de nappes tendues, notamment constituées de films en polychlorure de vinyle (PVC).Acoustic assembly (1) according to any one of the preceding claims, characterized in that the supports consist of stretched sheets, in particular made of polyvinyl chloride (PVC) films. Ensemble acoustique (1) selon l'une quelconque des revendications précédentes caractérisé en ce que les supports sont constitués de textiles ou de tout autres matériaux souples ou rigides.Acoustic assembly (1) according to any one of the preceding claims, characterized in that the supports consist of textiles or any other flexible or rigid materials. Ensemble acoustique (1) selon l'une quelconque des revendications précédentes caractérisé en ce que la distance entre les différents supports (3) comportant chacun une série de micro-perforations est comprise entre 10 et 90 mm.Acoustic assembly (1) according to any preceding claim characterized in that the distance between the various supports (3) each having a series of micro-perforations is between 10 and 90 mm. Ensemble acoustique (1) selon la revendication 2 caractérisé en ce que lesdites micro-perforations ont un diamètre inférieur à 2 mm.Acoustic assembly (1) according to claim 2 characterized in that said micro-perforations have a diameter less than 2 mm. Ensemble acoustique (1) selon l'une quelconque des revendications précédentes caractérisé en ce que les micro-perforations sont de forme circulaire et se distribuent préférentiellement suivant un maillage de forme carrée, triangulaire ou rectangulaire.Acoustic assembly (1) according to any one of the preceding claims, characterized in that the micro-perforations are of circular shape and are distributed preferentially in a mesh of square, triangular or rectangular shape. Ensemble acoustique (1) selon l'une quelconque des revendications précédentes caractérisé en ce que les micro-perforations ont un diamètre inférieur à 1mm.Acoustic assembly (1) according to any preceding claim characterized in that the micro-perforations have a diameter less than 1mm. Ensemble acoustique (1) selon l'une quelconque des revendications précédentes caractérisé en ce que les supports comportant une série de micro-perforations ont une densité de micro-perforations supérieure à 1 000 micro-perforations/m2.Acoustic assembly (1) according to any one of the preceding claims, characterized in that the supports comprising a series of micro-perforations have a micro-perforation density greater than 1,000 micro-perforations / m 2 .
EP11195991.2A 2010-12-30 2011-12-29 Acoustically absorbing assembly Active EP2472018B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11195991T PL2472018T3 (en) 2010-12-30 2011-12-29 Acoustically absorbing assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1005190A FR2970009B1 (en) 2010-12-30 2010-12-30 ACOUSTICALLY ABSORBENT PACKAGE

Publications (2)

Publication Number Publication Date
EP2472018A1 true EP2472018A1 (en) 2012-07-04
EP2472018B1 EP2472018B1 (en) 2020-03-25

Family

ID=44462003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11195991.2A Active EP2472018B1 (en) 2010-12-30 2011-12-29 Acoustically absorbing assembly

Country Status (4)

Country Link
EP (1) EP2472018B1 (en)
ES (1) ES2790950T3 (en)
FR (1) FR2970009B1 (en)
PL (1) PL2472018T3 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014102473A1 (en) * 2012-12-31 2014-07-03 Jean-Marc Scherrer Hermetic and acoustically absorbent assembly for false wall
WO2015132521A1 (en) * 2014-03-04 2015-09-11 Jean-Marc Scherrer High and low frequency sound absorption assembly
WO2016087587A1 (en) 2014-12-05 2016-06-09 Eleda S.R.L. Sound-absorbing element and system
US20170342711A1 (en) * 2014-11-26 2017-11-30 Normalu Stretched-web structure for producing a false ceiling or a dropped ceiling box
USD894429S1 (en) 2018-04-13 2020-08-25 Caimi Brevetti S.P.A. Sound absorbing panel
USD895158S1 (en) 2018-04-13 2020-09-01 Caimi Brevetti S.P.A. Sound absorbing panel
USD895159S1 (en) 2018-04-13 2020-09-01 Caimi Brevetti S.P.A. Sound absorbing panel
US20220148550A1 (en) * 2019-03-04 2022-05-12 Corning Incorporated Micro-perforated panel systems, applications, and methods of making micro-perforated panel systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013513A1 (en) * 1979-01-04 1980-07-23 Daempa A/S Sound absorbing structure
DE4408782A1 (en) * 1994-03-15 1995-09-21 Fraunhofer Ges Forschung Foil sound absorber
DE10022902A1 (en) * 1999-08-11 2001-03-08 Hp Chem Pelzer Res & Dev Ltd Component with high absorptive effect over a wide frequency range
WO2008017737A1 (en) * 2006-08-10 2008-02-14 Brevetix Sound-absorbing assembly
EP2078796A1 (en) * 2008-01-09 2009-07-15 Normalu Cloth for watertight acoustic and partially translucid stretched walls

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013513A1 (en) * 1979-01-04 1980-07-23 Daempa A/S Sound absorbing structure
DE4408782A1 (en) * 1994-03-15 1995-09-21 Fraunhofer Ges Forschung Foil sound absorber
DE10022902A1 (en) * 1999-08-11 2001-03-08 Hp Chem Pelzer Res & Dev Ltd Component with high absorptive effect over a wide frequency range
WO2008017737A1 (en) * 2006-08-10 2008-02-14 Brevetix Sound-absorbing assembly
EP2078796A1 (en) * 2008-01-09 2009-07-15 Normalu Cloth for watertight acoustic and partially translucid stretched walls

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10260231B2 (en) 2012-12-31 2019-04-16 Jean-Marc Scherrer Hermetic and acoustically absorbent assembly for a false partition
FR3000509A1 (en) * 2012-12-31 2014-07-04 Jean-Marc Scherrer SEALED AND ACOUSTICALLY ABSORBENT ASSEMBLY FOR FALSE WALL
CN105051295A (en) * 2012-12-31 2015-11-11 J-M·谢乐 Hermetic and acoustically absorbent assembly for false wall
JP2016508195A (en) * 2012-12-31 2016-03-17 シェレル ジャン−マルクＳＣＨＥＲＲＥＲ Ｊｅａｎ−Ｍａｒｃ Sealed sound absorbing assembly for pseudo diaphragm
WO2014102473A1 (en) * 2012-12-31 2014-07-03 Jean-Marc Scherrer Hermetic and acoustically absorbent assembly for false wall
AU2013369101B2 (en) * 2012-12-31 2018-05-10 Jean-Marc Scherrer Hermetic and acoustically absorbent assembly for false wall
WO2015132521A1 (en) * 2014-03-04 2015-09-11 Jean-Marc Scherrer High and low frequency sound absorption assembly
FR3018384A1 (en) * 2014-03-04 2015-09-11 Jean-Marc Scherrer ACOUSTIC ABSORPTION ASSEMBLY WITH HIGH AND LOW FREQUENCIES
CN106103858B (en) * 2014-03-04 2021-11-16 J-M·谢乐 High and low frequency sound absorption assembly
CN106103858A (en) * 2014-03-04 2016-11-09 J-M·谢乐 Just frequency acoustic absorptive member
US10109269B2 (en) 2014-03-04 2018-10-23 Jean-Marc Scherrer High and low frequency sound absorption assembly
US20170342711A1 (en) * 2014-11-26 2017-11-30 Normalu Stretched-web structure for producing a false ceiling or a dropped ceiling box
US10774530B2 (en) * 2014-11-26 2020-09-15 Normalu Stretched-web structure for producing a false ceiling or a dropped ceiling box
US10508453B2 (en) 2014-12-05 2019-12-17 Eleda S.R.L. Sound-absorbing element and system
WO2016087587A1 (en) 2014-12-05 2016-06-09 Eleda S.R.L. Sound-absorbing element and system
USD894429S1 (en) 2018-04-13 2020-08-25 Caimi Brevetti S.P.A. Sound absorbing panel
USD895158S1 (en) 2018-04-13 2020-09-01 Caimi Brevetti S.P.A. Sound absorbing panel
USD895159S1 (en) 2018-04-13 2020-09-01 Caimi Brevetti S.P.A. Sound absorbing panel
US20220148550A1 (en) * 2019-03-04 2022-05-12 Corning Incorporated Micro-perforated panel systems, applications, and methods of making micro-perforated panel systems

Also Published As

Publication number Publication date
EP2472018B1 (en) 2020-03-25
PL2472018T3 (en) 2020-08-10
ES2790950T3 (en) 2020-10-30
FR2970009B1 (en) 2021-06-11
FR2970009A1 (en) 2012-07-06

Similar Documents

Publication Publication Date Title
EP2472018B1 (en) Acoustically absorbing assembly
EP3114678B1 (en) High and low frequency sound absorption assembly
EP3371984B1 (en) Multi-glazed window incorporating a noise reduction device
FR3065472A1 (en) PANEL FOR ACOUSTIC PROCESSING COMPRISING AN ACOUSTICALLY RESISTIVE POROUS STRUCTURE HAVING CONNECTION CHANNELS
FR2970013A1 (en) FALSE DEVICE WITH TRIPLE THICKNESS
EP2054562B1 (en) Sound-absorbing assembly
WO1989011198A1 (en) Sound installation, particularly stereophonic installation for television sets with integrated low frequency loud-speaker with large dimensions
EP2938793B1 (en) Wall comprising a dustproof acoustically absorbing assembly
EP3411874A1 (en) Low thickness perforated mille-feuille acoustic resonator for absorbing or radiating very low acoustic frequencies
FR2881765A1 (en) Sound absorbent assembly for use in apartment, has poly vinyl chloride canvas with two series of micro-perforations having respective small and large surfaces and distributed in regular manner on square shaped meshing on canvas
FR3065473A1 (en) PANEL FOR ACOUSTIC TREATMENT COMPRISING ALVEOLES CONTAINING EACH OF A PLURALITY OF DUCTS
EP3371521B1 (en) Apparatus for natural ventilation of a room having a ventilation passage combined with a noise absorber
EP2447432B1 (en) Device for hanging an acoustical treatment element
EP3371519B1 (en) Unit for the natural ventilation of a room, provided with a sound absorber
CA2757170A1 (en) Acoustic panel for receiving, emitting or absorbing sounds
WO2020216860A1 (en) Active control of a double-walled installation
WO2020212177A1 (en) Acoustic insulation product comprising a backing layer
FR2581106A1 (en) Insulating self-supporting structure, particularly for acoustic insulation and method for its manufacture
FR3014127A1 (en) DEVICE FOR CREATING A PRIVACY AREA
FR2998603A1 (en) Device i.e. panel, for use at e.g. ceiling to absorb acoustic waves in e.g. conference hall, has textile coating supported by peripheral modular frame that includes groove maintaining removable central core i.e. perforated sheet
EP0897176B1 (en) Underwater acoustic absorber
BE1017303A6 (en) PASSIVE SOUND ABSORBER FOR ACOUSTIC CORRECTION WITHIN A BUILDING.
FR2938687A1 (en) ACCOUSTIC REFLECTOR
EP4172448A1 (en) Sound spacer
FR3142965A1 (en) MULTI-LAYER INSULATION DEVICE FOR A VEHICLE

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20121228

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20161214

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20191022

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NOCKE, CHRISTIAN

Inventor name: SCHERRER, JEAN-MARC

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1248720

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011065806

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: NOVAGRAAF INTERNATIONAL SA, CH

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200625

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200626

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200725

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200818

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2790950

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20201030

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1248720

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200325

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011065806

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20210112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200325

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20221122

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231121

Year of fee payment: 13

Ref country code: LU

Payment date: 20231121

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231124

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20231123

Year of fee payment: 13

Ref country code: FR

Payment date: 20231122

Year of fee payment: 13

Ref country code: DE

Payment date: 20231121

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20231127

Year of fee payment: 13

Ref country code: BE

Payment date: 20231121

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240102

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20240102

Year of fee payment: 13