CA2478579A1 - Mur antibruit - Google Patents

Mur antibruit Download PDF

Info

Publication number
CA2478579A1
CA2478579A1 CA002478579A CA2478579A CA2478579A1 CA 2478579 A1 CA2478579 A1 CA 2478579A1 CA 002478579 A CA002478579 A CA 002478579A CA 2478579 A CA2478579 A CA 2478579A CA 2478579 A1 CA2478579 A1 CA 2478579A1
Authority
CA
Canada
Prior art keywords
absorption device
elements
noise absorption
relief
base
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
CA002478579A
Other languages
English (en)
Other versions
CA2478579C (fr
Inventor
Bernard Sapoval
Marcel Filoche
Michel Chappat
Didier Peyrard
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.)
Colas SA
Ecole Polytechnique
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2478579A1 publication Critical patent/CA2478579A1/fr
Application granted granted Critical
Publication of CA2478579C publication Critical patent/CA2478579C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
    • E01F8/0076—Cellular, e.g. as wall facing
    • 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
    • E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • 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
    • E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate shaped
    • E04B2001/8419—Acoustical cones or the like, e.g. for anechoic chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

La présente invention concerne un dispositif d'absorption du bruit. Le dispositif comprend une base approximativement plane et des éléments (1) en relief et/ou en creux comportant chacun au moins un évidement (2). Cette bas e révèle avec les éléments (1) en relief et/ou en creux une configuration présentant une zone de fractalité comprise entre 1 cm et 50 cm, de dimension fractale supérieure à 2,5 permettant la localisation des ondes dans la gamme de fréquence du son, au voisinage desdits éléments (1).

Claims (22)

1. Dispositif d'absorption du bruit, notamment routier et ferroviaire comprenant une base approximativement plane, des éléments (1) en relief et/ou en creux comportant chacun au moins un évidement (2), caractérisé
en ce que cette base révèle avec les éléments (1) en relief et/ou en creux une configuration présentant une fractalité dans une gamme de longueurs comprise entre 1 cm et 50 cm, de dimension fractale supérieure à 2,5 permettant la localisation de modes acoustiques, au voisinage desdits éléments (1).
2. Dispositif d'absorption du bruit selon la revendication 1, caractérisé en ce que les éléments (1) en relief sont des troncs de cônes.
3. Dispositif d'absorption du bruit selon la revendication l, caractérisé en ce que les éléments (1) en relief sont des troncs de pyramides.
4. Dispositif d'absorption du bruit selon la revendication 3, caractérisé en ce que la base des troncs de pyramides est rectangulaire.
5. Dispositif d'absorption du bruit selon l'une quelconque des revendications 2 à 4, caractérisé en ce que l'évidement est un tronc de cône (2) creux ayant pour axe (7) la droite reliant le sommet des éléments (1) en relief au centre de leur base (4), lesdits troncs de cône (2) étant ouverts du coté de la partie supérieure des éléments (1) en relief.
6. Dispositif d'absorption du bruit selon l'une quelconque des revendications 2 à 4, caractérisé en ce que l'évidement est un tronc de cône (2) creux ayant un axe (7) parallèle à la base (4) desdits éléments (1) en relief, lesdits troncs de cône (2) étant ouverts à leurs extrémités (8).
7. Dispositif d'absorption du bruit selon l'une des revendications 1 à 6, caractérisé en ce que le plan délimitant la partie supérieure (3) des éléments (1) en relief fait un angle .phi. par rapport au plan passant par la base (4) desdits éléments (1).
8. Dispositif d'absorption du bruit selon l'une des revendications 1 à 7, caractérisé en ce que les éléments (1) en relief sont réalisés en un matériau phoniquement absorbant.
9. Dispositif d'absorption du bruit selon la revendication 8, caractérisé en ce que les éléments (1) en relief sont en béton-bois.
10. Dispositif d'absorption du bruit selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les éléments (1) en relief sont recouverts d'un matériau phoniquement absorbant.
11. Dispositif d'absorption du bruit selon l'une des revendications 1 à 10, caractérisé en ce que les éléments (1) en relief sont regroupés en caissons (9) ayant une base plane (10) sur laquelle sont formés les éléments (1) en relief.
12. Dispositif d'absorption du bruit selon la revendication 11, caractérisé en ce que les éléments (1) en relief sont séparés par des évidements (2) formés dans la base (10).
13. Dispositif d'absorption du bruit selon la revendication 12, caractérisé en ce que les évidements (2) sont des troncs de cône (2) ouverts du coté de la partie supérieure de la base (10).
14. Dispositif d'absorption du bruit selon la revendication 12 ou 13, caractérisé en ce qu'un évidement (2) et deux éléments (1) en relief forment une maille élémentaire.
15. Dispositif d'absorption du bruit selon la revendication 14, caractérisé en ce que le caisson est formé d'un arrangement périodique de la même maille élémentaire.
16. Dispositif d'absorption du bruit selon l'une des revendications 11 à 15, caractérisé en ce qu'il est constitué de plusieurs caissons (9) formant un mur (12), les caissons (9) ayant leurs bases (10) parallèles à la surface du mur (12).
17. Dispositif d'absorption du bruit selon la revendication 16, caractérisé en ce que les caissons (9) sont disposés aléatoirement les uns par rapport aux autres.
18. Dispositif d'absorption du bruit selon la revendication 17, caractérisé en ce que les éléments (1) en relief s011t des troncs de pyramides et les caissons (9) sont regroupés par paires pour former une succession de pyramides inversées.
19. Dispositif d'absorption du bruit selon la revendication 16, caractérisé en ce qu'il est constitué de plusieurs caissons (9) formant un mur (12), les caissons (9) ayant leurs bases (10) respectivement soit parallèles, soit perpendiculaires à la surface du mur (12).
20. Dispositif d'absorption du bruit selon la revendication 19, caractérisé en ce que des caissons (9) orientés respectivement vers les deux faces du mur (12) sont associés.
21. Dispositif d'absorption du bruit selon les revendications 19 et 20, caractérisé en ce que des caissons (9) sont associés, de haut en bas, dans l'ordre suivant en désignant par A, un caisson (9A) dont la base (10) est perpendiculaire à la surface du mur (12) et B, un caisson (9B) dont la base (10) est parallèle à la surface du mur (12) :
A B A A B A
22. Dispositif d'absorption du bruit selon la revendication 21, caractérisé en ce que les caissons (9) de type A sont répartis en deux catégories, respectivement, A1 et A2 perpendiculaires l'un à l'autre.
CA2478579A 2002-03-19 2003-03-19 Mur antibruit Expired - Fee Related CA2478579C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR02/03404 2002-03-19
FR0203404A FR2837508B1 (fr) 2002-03-19 2002-03-19 Mur antibruit
PCT/FR2003/000881 WO2003078740A1 (fr) 2002-03-19 2003-03-19 Mur antibruit

Publications (2)

Publication Number Publication Date
CA2478579A1 true CA2478579A1 (fr) 2003-09-25
CA2478579C CA2478579C (fr) 2010-07-06

Family

ID=27799073

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2478579A Expired - Fee Related CA2478579C (fr) 2002-03-19 2003-03-19 Mur antibruit

Country Status (5)

Country Link
US (1) US7308965B2 (fr)
EP (1) EP1488043B1 (fr)
CA (1) CA2478579C (fr)
FR (1) FR2837508B1 (fr)
WO (1) WO2003078740A1 (fr)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328680A1 (de) * 2003-06-26 2005-01-13 Daimlerchrysler Ag Vorrichtung und Verfahren zur Wärme-und/oder Schallisolierung bei Kraftfahrzeugen
US7181891B2 (en) * 2003-09-08 2007-02-27 Quiet Solution, Inc. Acoustical sound proofing material and methods for manufacturing same
JP4144754B2 (ja) * 2004-05-31 2008-09-03 Ｔｄｋ株式会社 電波吸収体
US8495851B2 (en) * 2004-09-10 2013-07-30 Serious Energy, Inc. Acoustical sound proofing material and methods for manufacturing same
US7921965B1 (en) 2004-10-27 2011-04-12 Serious Materials, Inc. Soundproof assembly and methods for manufacturing same
US20060157297A1 (en) * 2005-01-14 2006-07-20 Rpg Diffusor Systems, Inc. Diverse acoustical modules with identical outward appearance
US7798287B1 (en) * 2005-01-20 2010-09-21 Serious Materials, Inc. Acoustical ceiling panels
US20060230699A1 (en) * 2005-03-22 2006-10-19 Keene James R Sound control flooring systems and methods therefor
US7322441B2 (en) * 2005-04-14 2008-01-29 Rpg Diffusor Systems, Inc. Extended bandwidth folded well diffusor
KR100645824B1 (ko) * 2005-06-14 2006-11-14 김영옥 흡음판넬
US7428948B2 (en) * 2005-08-11 2008-09-30 Rpg Diffusor Systems, Inc. Hybrid amplitude-phase grating diffusers
US20070045042A1 (en) * 2005-08-25 2007-03-01 L&L Products, Inc. Sound reduction system with sound reduction chamber
US8029881B2 (en) * 2005-11-04 2011-10-04 Serious Energy, Inc. Radio frequency wave reducing material and methods for manufacturing same
AU2006338524B2 (en) * 2006-04-27 2011-10-13 Masao Suzuki Sound insulating device
US20080171179A1 (en) * 2007-01-11 2008-07-17 Quiet Solution, Llc Low embodied energy wallboards and methods of making same
US20080223653A1 (en) * 2007-03-16 2008-09-18 Seoul National University Industry Foundation Poroelastic acoustical foam having enhanced sound-absorbing performance
US7987645B2 (en) * 2007-03-29 2011-08-02 Serious Materials, Inc. Noise isolating underlayment
US9388568B2 (en) * 2007-04-06 2016-07-12 Pacific Coast Building Products, Inc. Acoustical sound proofing material with improved fracture characteristics and methods for manufacturing same
US7883763B2 (en) 2007-04-12 2011-02-08 Serious Materials, Inc. Acoustical sound proofing material with controlled water-vapor permeability and methods for manufacturing same
US8424251B2 (en) * 2007-04-12 2013-04-23 Serious Energy, Inc. Sound Proofing material with improved damping and structural integrity
US8181738B2 (en) * 2007-04-24 2012-05-22 Serious Energy, Inc. Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same
US8397864B2 (en) * 2007-04-24 2013-03-19 Serious Energy, Inc. Acoustical sound proofing material with improved fire resistance and methods for manufacturing same
US10174499B1 (en) 2007-05-01 2019-01-08 Pacific Coast Building Products, Inc. Acoustical sound proofing material for architectural retrofit applications and methods for manufacturing same
DE102007022616C5 (de) * 2007-05-15 2013-01-17 Airbus Operations Gmbh Mehrschichtplatte mit schräger Schlitzung des Plattenkerns zur Reduzierung der Körperschallabstrahlung und zur Erhöhung der Schalldämmung bei Beibehalten der mechanischen Stabilität
US20080286609A1 (en) * 2007-05-15 2008-11-20 Surace Kevin J Low embodied energy wallboards and methods of making same
US20100101457A1 (en) * 2007-05-25 2010-04-29 Surace Kevin J Low embodied energy sheathing panels and methods of making same
US9387649B2 (en) * 2007-06-28 2016-07-12 Pacific Coast Building Products, Inc. Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics
US7908818B2 (en) * 2008-05-08 2011-03-22 Serious Materials, Inc. Methods of manufacturing acoustical sound proofing materials with optimized fracture characteristics
US20090000245A1 (en) * 2007-06-28 2009-01-01 Tinianov Brandon D Methods of manufacturing acoustical sound proofing material
US7914914B2 (en) * 2007-06-30 2011-03-29 Serious Materials, Inc. Low embodied energy sheathing panels with optimal water vapor permeance and methods of making same
US7799410B2 (en) * 2007-06-30 2010-09-21 Serious Materials, Inc. Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same
US8337993B2 (en) * 2007-11-16 2012-12-25 Serious Energy, Inc. Low embodied energy wallboards and methods of making same
WO2009127258A2 (fr) * 2008-04-17 2009-10-22 Stichting Nationaal Lucht- En Ruimtevaart Laboratorium Procédé pour la réduction du son
US8381872B2 (en) * 2008-05-05 2013-02-26 3M Innovative Properties Company Acoustic composite
JP5359167B2 (ja) * 2008-10-07 2013-12-04 ヤマハ株式会社 車体構造体および荷室
DE102008063923A1 (de) * 2008-12-19 2010-06-24 Airbus Deutschland Gmbh Mehrschichtplatte zur Schalldämmung
US8015848B2 (en) * 2009-01-22 2011-09-13 Electrolux Home Products, Inc. Acoustic panel
US20110232701A1 (en) * 2009-01-27 2011-09-29 Electrolux Home Products, Inc. Mastic-less dishwasher providing increasing energy efficiency and including a recyclable and reclaimable tub
US8020662B1 (en) * 2010-07-22 2011-09-20 Electrolux Home Products, Inc. Acoustic base tray for a dishwashing appliance, and associated method
US8146310B2 (en) * 2009-03-11 2012-04-03 Keene Building Products Co., Inc. Noise control flooring system
FR2943000A1 (fr) * 2009-03-12 2010-09-17 Peugeot Citroen Automobiles Sa Buse, groupe moto-ventilateur et vehicule equipe de cette buse.
ES2358143B1 (es) * 2009-10-23 2012-03-26 Universidad Politecnica De Valencia Pantalla acústica.
US8528286B2 (en) * 2009-11-10 2013-09-10 Keene Building Products Co., Inc. Sound control mat
MX2010003431A (es) * 2010-03-26 2011-09-26 Mabe Sa De Cv Estampado de gabinete.
PT2602096E (pt) * 2010-08-05 2014-03-05 Butech Building Technology S A Processo de produção de peças de revestimento de piso removível e revestimento de piso removível
US8857564B2 (en) * 2012-11-01 2014-10-14 The Hong Kong University Of Science And Technology Acoustic metamaterial with simultaneously negative effective mass density and bulk modulus
US9038342B2 (en) * 2012-12-31 2015-05-26 Playsafer Surfacing LLC a division Rubberecycle Unitary safety surface tiles and associated structures
US20140262607A1 (en) * 2013-03-15 2014-09-18 Kent Gray Kit For Assembling Acoustic Treatments To Surfaces
US8960367B1 (en) * 2013-11-08 2015-02-24 Jean Leclerc Acoustic panel
FR3017235B1 (fr) 2014-02-04 2016-01-29 Onera Office National Detudes Et De Rech Aerospatiales Panneau insonorisant
US9845598B1 (en) * 2014-06-23 2017-12-19 Hanson Hsu Apparatus for improving the acoustics of an interior space, a system incorporating said apparatus and method of using said apparatus
CA2988547C (fr) 2016-12-15 2021-01-26 Certainteed Gypsum, Inc. Panneaux de platre et leurs methodes de fabrication
CN106996204B (zh) * 2017-05-04 2019-09-06 中国航发沈阳发动机研究所 一种用于风扇增压级气动噪声试验的消声室
CN111405979A (zh) 2017-09-26 2020-07-10 瑟登帝石膏公司 具有内部层的灰泥板及其制备方法
WO2019067994A1 (fr) 2017-09-28 2019-04-04 Certainteed Gypsum, Inc. Plaques de plâtre et leurs procédés de fabrication
US11214962B2 (en) 2017-09-30 2022-01-04 Certainteed Gypsum, Inc. Tapered plasterboards and methods for making them
US10978038B2 (en) * 2018-07-02 2021-04-13 Toyota Motor Engineering & Manufacturing North America, Inc. Invisible sound barrier
USD887965S1 (en) * 2018-11-22 2020-06-23 Michael Ross Catania Solar panel
USD887966S1 (en) * 2018-11-22 2020-06-23 Michael Ross Catania Solar panel
USD883193S1 (en) * 2018-11-28 2020-05-05 Michael Ross Catania Solar panel
USD883194S1 (en) * 2018-12-16 2020-05-05 Michael Ross Catania Solar panel
US11555280B2 (en) * 2020-09-29 2023-01-17 Toyota Motor Engineering & Manufacturing North America, Inc. Sound absorbing structure having one or more acoustic scatterers for improved sound transmission loss

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1791232A (en) * 1930-01-06 1931-02-03 Frank J Borkenstein Sound-cushioning means
US2771164A (en) * 1949-01-27 1956-11-20 Western Engineering Associates Wall construction
US2792164A (en) * 1951-08-10 1957-05-14 Cauffiel John Preformed structural units
US2840179A (en) * 1954-06-17 1958-06-24 Miguel C Junger Sound-absorbing panels
DE1168112B (de) * 1963-04-10 1964-04-16 Olympia Werke Ag Schalldaemmittel fuer Maschinenbekleidungen, insbesondere von Bueromaschinen
ES207580Y (es) * 1971-01-11 1976-07-16 Morresi Panel para el acondicionamiento acustico y climatico de am-bientes en general.
US3722619A (en) * 1972-04-26 1973-03-27 Honeywell Inc Acoustic decoupler
CH567636A5 (fr) * 1973-06-04 1975-10-15 Schrepfer Rudolf
DE2921050A1 (de) * 1979-05-23 1980-11-27 Fraunhofer Ges Forschung Schallabsorbierendes bauelement aus kunststoff-folie
US4242398A (en) * 1979-01-16 1980-12-30 Teijin Limited Fibrous shaped article having non-level surface
DE3233654C2 (de) * 1982-09-10 1986-01-16 Ewald Dörken AG, 5804 Herdecke Schallabsorbierendes Bauelement
DE3313813A1 (de) * 1983-04-16 1984-10-25 Hans Graf Bauunternehmung GmbH + Co KG, 5047 Wesseling Wandsysteme
DE3530867A1 (de) * 1985-08-29 1987-03-05 Nuedling Franz C Basaltwerk Mauerwerk- oder pflasterstein aus beton oder dergleichen
DE3728103A1 (de) * 1987-08-22 1989-03-02 Nuedling Franz C Basaltwerk Bauelement sowie verfahren zur herstellung desselben
JPH01226906A (ja) * 1988-03-04 1989-09-11 Seiji Osawa 屋外用防音板
CH678201A5 (fr) * 1989-03-17 1991-08-15 Lignoform Formsperrholz Ag
US5027920A (en) * 1989-11-06 1991-07-02 Rpg Diffusor Systems, Inc. Cinder block modular diffusor
US5160816A (en) * 1990-10-17 1992-11-03 Systems Development Group Two dimensional sound diffusor
JPH052395A (ja) * 1991-06-25 1993-01-08 Matsushita Electric Works Ltd 吸音複合パネル
US5250763A (en) * 1991-10-07 1993-10-05 Brown William G Acoustical equalization device system
US5193318A (en) * 1991-10-23 1993-03-16 Rpg Diffusor Systems, Inc. Acoustical diffusing and absorbing cinder blocks
JPH05150791A (ja) * 1991-11-29 1993-06-18 Isuzu Motors Ltd 消音装置
CH686667A5 (de) * 1992-09-23 1996-05-31 Rieter Automotive Int Ag Vibrationsdaempfende Dachhimmelkonstruktion.
FR2712902B1 (fr) * 1993-11-26 1996-02-16 Tuyaux Bonna Dispositif d'isolation acoustique et procédé de fabrication d'un tel dispositif.
US5665943A (en) * 1995-06-15 1997-09-09 Rpg Diffusor Systems, Inc. Nestable sound absorbing foam with reduced area of attachment
US5817992A (en) * 1997-03-05 1998-10-06 Rpg Diffusor Systems, Inc. Planar binary amplitude diffusor
DE19861016C2 (de) * 1998-12-17 2001-07-05 Fraunhofer Ges Forschung Strukturierte Formkörper zur Schallabsorption
US20030006092A1 (en) * 2001-06-27 2003-01-09 Rpg Diffusor Systems, Inc. Sound diffuser with low frequency sound absorption
US6772859B2 (en) * 2002-09-26 2004-08-10 Rpg Diffusor Systems, Inc. Embodiments of aperiodic tiling of a single asymmetric diffusive base shape

Also Published As

Publication number Publication date
FR2837508A1 (fr) 2003-09-26
EP1488043B1 (fr) 2013-11-06
WO2003078740A1 (fr) 2003-09-25
US7308965B2 (en) 2007-12-18
CA2478579C (fr) 2010-07-06
EP1488043A1 (fr) 2004-12-22
US20050103568A1 (en) 2005-05-19
FR2837508B1 (fr) 2005-06-24

Similar Documents

Publication Publication Date Title
CA2478579A1 (fr) Mur antibruit
USD485732S1 (en) Front panel for a cooler
USD486891S1 (en) Vent pipe protective cover
USD524662S1 (en) Five compartment container base
USD514688S1 (en) Air moving device
USD563539S1 (en) Kitchen hood
USD515280S1 (en) Pair of rally pads
USD927211S1 (en) Height adjustable portable camping chair
USD650701S1 (en) Valve and tube assembly
FR2884344A3 (fr) Instrument de musique a lames basse
USD993128S1 (en) Automobile interior
USD547121S1 (en) Mug
USD515319S1 (en) Brush
USD523378S1 (en) Rustic recreational vehicle
JP4524762B2 (ja) スピーカボックスおよびスピーカ装置
USD496331S1 (en) Battery box
CA2477363A1 (fr) Rabot-racloir
USD433329S (en) Scalloped box
USD511481S1 (en) Snowmobile track lugs
USD422906S (en) Stacking bottle unit
USD522174S1 (en) Cosmetic block
USD488354S1 (en) Champagne cooler
USD477724S1 (en) Tool box simulating dresser
USD504592S1 (en) Hand mixer
USD523970S1 (en) Watertight decking panel

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20190319