EP0951200A2 - Enceinte acoustique tubulaire - Google Patents
Enceinte acoustique tubulaire Download PDFInfo
- Publication number
- EP0951200A2 EP0951200A2 EP98402631A EP98402631A EP0951200A2 EP 0951200 A2 EP0951200 A2 EP 0951200A2 EP 98402631 A EP98402631 A EP 98402631A EP 98402631 A EP98402631 A EP 98402631A EP 0951200 A2 EP0951200 A2 EP 0951200A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- extruded
- tube
- acoustic enclosure
- enclosure according
- profile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000003190 viscoelastic substance Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002023 wood Substances 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
- H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
- H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
Definitions
- the present invention relates to the field loudspeakers.
- An acoustic enclosure is usually constituted by a rigid box placed on a base and having at least one cutout corresponding to a speaker.
- the box is made up of an assembly wooden faces or equivalent materials.
- a quality essential of an enclosure is its mechanical rigidity. Assembly therefore requires great care in its execution, to avoid any inhomogeneity and any faulty source of vibration or poor transmission some efforts.
- the object of the present invention is to remedy this drawback by proposing a method of manufacturing and a structure to avoid stiffness defects.
- the invention relates to a acoustic enclosure including the box consisting of a profiled in an extruded material, in particular a tube extruded.
- the profile extruded is at least 5 times longer to the section.
- the extruded profile is made of aluminum, for example to form an extruded aluminum tube.
- the extruded profile is made of steel, for example a extruded steel tube.
- the extruded profile is made of plastic by example an extruded plastic tube.
- a viscoelastic material is provided inside the tube.
- the tube is covered with an acoustic fabric sleeve.
- the enclosure according to the invention consists of an assembly of several tuned tubes.
- tube is meant an element having any constant section, closed or not.
- FIG. 1 and 2 having the general shape of a very thin column, square section. It consists of an extruded tube (4) aluminum.
- This extruded tube (4) has a square section of 125 mm side and 2.5 mm thick.
- the length of the tube is 1040 mm.
- the rear corners of the tube (4) are reinforced by 10 mm "L" angle brackets (5) and 1.5 mm thick. These brackets (5) are kept on the extruded tube (4) by gluing.
- the front face of the extruded tube (4) is covered with a facade (7) made of natural wood or in reconstituted wood such as "medium".
- This facade (7) has a thickness of 31 mm. It supports midrange (8), treble (9) and bass speakers (10).
- the front (7) is fixed to the extruded tube by collage.
- Midrange (8) and treble speakers (9) are in a closed compartment separate from the bass reflex load.
- Vibration damping of the extruded tube (7) is made using viscoelastic materials (6, 4) glued to the inside and outside of the tube.
- the viscoelastic material is advantageously constituted by sheets of a material based on elastomeric bitumen with a thickness of approximately 3 millimeters inside, and with a thickness of the order 1.5 mm on the outside.
- a 5 kg steel ballast, fixed to the base (12) ensures the stability of the enclosure.
- Figure 3 shows a second example of achievement.
- the enclosure is formed by assembling two tubes (21, 22) juxtaposed.
- the lower part is bass reflex type and has a vent (23).
- the walls separating the two tubes (21, 22) are pierced by lights (24, 25) providing a path acoustic between the woofer (10) and the vent (23).
- Partitions (26, 27) separate the part bottom of the enclosure, and the top containing the tweeters (9) and midrange (8).
- the upper part (28) of the extruded tube rear (22) is filled with viscoelastic material providing vibration damping.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
- la figure 1 représente une vue éclatée d'un premier exemple de réalisation ;
- la figure 2 représente une vue de coté de l'enceinte ;
- la figure 3 représente une vue en coupe d'un deuxième exemple de réalisation.
Claims (9)
- Enceinte acoustique constituée par un caisson rigide posé sur un socle et présentant au moins une découpe correspondant à un haut-parleur caractérisé en ce que le caisson constituée par au moins un profilé extrudé (4).
- Enceinte acoustique selon la revendication 1 caractérisé en ce que le profilé extrudé (4) présente une longueur au moins 5 fois supérieure à la section.
- Enceinte acoustique selon la revendication 1 ou 2 caractérisé en ce que le profilé extrudé (4) est réalisé en aluminium.
- Enceinte acoustique selon la revendication 1 ou 2 caractérisé en ce que le profilé extrudé (4) est réalisé en acier.
- Enceinte acoustique selon la revendication 1 ou 2 caractérisé en ce que le profilé extrudé (4) est réalisé en un matière plastique.
- Enceinte acoustique selon l'une quelconque des revendications précédentes caractérisé en ce qu'un matériau viscoélastique est prévu à l'intérieur du tube extrudé.
- Enceinte acoustique selon l'une quelconque des revendications précédentes caractérisé en ce que le tube extrudé (4) est revêtu d'un manchon en tissu acoustique.
- Enceinte acoustique selon l'une quelconque des revendications précédentes caractérisé en ce qu'elle est constituée par un assemblage de deux profilés accordés (21, 22) juxtaposés.
- Enceinte acoustique selon l'une quelconque des revendications précédentes caractérisé en ce que la face avant du profilé extrudé (4) est recouverte par une façade (7) supportant les haut-parleurs.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9713511 | 1997-10-28 | ||
FR9713511A FR2770364B3 (fr) | 1997-10-28 | 1997-10-28 | Enceinte acoustique tubulaire |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0951200A2 true EP0951200A2 (fr) | 1999-10-20 |
EP0951200A3 EP0951200A3 (fr) | 2000-01-05 |
Family
ID=9512741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98402631A Withdrawn EP0951200A3 (fr) | 1997-10-28 | 1998-10-22 | Enceinte acoustique tubulaire |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0951200A3 (fr) |
FR (1) | FR2770364B3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100479534C (zh) * | 2004-12-30 | 2009-04-15 | 南京大学 | 内衬微穿孔吸声材料的平板扬声器箱的设置方法及装置 |
WO2009042383A3 (fr) * | 2007-09-27 | 2009-07-16 | Bose Corp | Commande de mode de guide d'onde acoustique |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4267405A (en) * | 1979-06-05 | 1981-05-12 | Mcintosh Laboratory, Inc. | Stereo speaker system for creating stereo images |
FR2611105A1 (fr) * | 1987-02-12 | 1988-08-19 | Fedoroff Michel | Coffret modulaire pour les installations de sonorisation et installation de sonorisation realisee au moyen d'un tel coffret |
JPH0247996A (ja) * | 1988-08-09 | 1990-02-16 | Mitsubishi Electric Corp | スピーカキャビネット |
US4942939A (en) * | 1989-05-18 | 1990-07-24 | Harrison Stanley N | Speaker system with folded audio transmission passage |
US5058169A (en) * | 1989-11-01 | 1991-10-15 | Temmer Stephen F | Public address system |
US5333204A (en) * | 1991-08-09 | 1994-07-26 | Pioneer Electronic Corporation | Speaker system |
DE19530743C1 (de) * | 1995-08-22 | 1996-08-22 | Friedrich J Schmitz | Lautsprecherbox |
WO1996034261A1 (fr) * | 1995-04-26 | 1996-10-31 | Audioform Ab | Agencement d'attenuation sonore et procede de realisation de l'agencement |
US5802190A (en) * | 1994-11-04 | 1998-09-01 | The Walt Disney Company | Linear speaker array |
-
1997
- 1997-10-28 FR FR9713511A patent/FR2770364B3/fr not_active Expired - Lifetime
-
1998
- 1998-10-22 EP EP98402631A patent/EP0951200A3/fr not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4267405A (en) * | 1979-06-05 | 1981-05-12 | Mcintosh Laboratory, Inc. | Stereo speaker system for creating stereo images |
FR2611105A1 (fr) * | 1987-02-12 | 1988-08-19 | Fedoroff Michel | Coffret modulaire pour les installations de sonorisation et installation de sonorisation realisee au moyen d'un tel coffret |
JPH0247996A (ja) * | 1988-08-09 | 1990-02-16 | Mitsubishi Electric Corp | スピーカキャビネット |
US4942939A (en) * | 1989-05-18 | 1990-07-24 | Harrison Stanley N | Speaker system with folded audio transmission passage |
US5058169A (en) * | 1989-11-01 | 1991-10-15 | Temmer Stephen F | Public address system |
US5333204A (en) * | 1991-08-09 | 1994-07-26 | Pioneer Electronic Corporation | Speaker system |
US5802190A (en) * | 1994-11-04 | 1998-09-01 | The Walt Disney Company | Linear speaker array |
WO1996034261A1 (fr) * | 1995-04-26 | 1996-10-31 | Audioform Ab | Agencement d'attenuation sonore et procede de realisation de l'agencement |
DE19530743C1 (de) * | 1995-08-22 | 1996-08-22 | Friedrich J Schmitz | Lautsprecherbox |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 014, no. 213 (E-0923), 7 mai 1990 (1990-05-07) & JP 02 047996 A (MITSUBISHI ELECTRIC CORP), 16 février 1990 (1990-02-16) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100479534C (zh) * | 2004-12-30 | 2009-04-15 | 南京大学 | 内衬微穿孔吸声材料的平板扬声器箱的设置方法及装置 |
WO2009042383A3 (fr) * | 2007-09-27 | 2009-07-16 | Bose Corp | Commande de mode de guide d'onde acoustique |
US7886869B2 (en) | 2007-09-27 | 2011-02-15 | Kevin Bastyr | Acoustic waveguide mode controlling |
Also Published As
Publication number | Publication date |
---|---|
FR2770364A1 (fr) | 1999-04-30 |
EP0951200A3 (fr) | 2000-01-05 |
FR2770364B3 (fr) | 2000-04-07 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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Effective date: 20000706 |