WO1999034641A1 - Tunnel acoustique - Google Patents
Tunnel acoustique Download PDFInfo
- Publication number
- WO1999034641A1 WO1999034641A1 PCT/FR1998/002874 FR9802874W WO9934641A1 WO 1999034641 A1 WO1999034641 A1 WO 1999034641A1 FR 9802874 W FR9802874 W FR 9802874W WO 9934641 A1 WO9934641 A1 WO 9934641A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acoustic
- tunnel according
- acoustic tunnel
- enclosure
- cylindrical element
- Prior art date
Links
- 239000006260 foam Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- H04R1/20—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
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm 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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
Definitions
- the present invention relates to an acoustic tunnel for an acoustic enclosure or for a loudspeaker integrated in a wall.
- a tunnel is usually formed by a cylindrical element placed behind the loudspeaker.
- PCT patent O91 / 19405 relates to a tubular enclosure.
- the object of the invention is to improve the acoustic quality of an acoustic enclosure, and to simplify assembly, in particular of an enclosure made of glued glass, or the front face of which is not easily removable.
- the invention relates to an acoustic tunnel intended to be placed in an acoustic enclosure, and having at its front end lateral extensions of which one of the faces is fixed to the mount of the loudspeaker and of which the other face is fixed on the enclosure.
- the lateral extensions are formed by an annular ring.
- the acoustic ring has threaded holes for mounting the speaker mount. These threaded holes are advantageously provided in inserts glued in the annular ring.
- the ring is fixed to the wall of the enclosure by a bonding joint.
- the lateral extensions are formed by annular wooden pieces.
- the cylindrical element is closed at its rear front end by a porous foam.
- the cylindrical element is closed at its rear front end by a passive membrane.
- the cylindrical element is partially filled with fleece.
- the length of the cylindrical element is less than the section of the diaphragm of the loudspeaker.
- the invention relates to an acoustic tunnel comprising a front plate of a dimension greater than the opening of the front face of the enclosure, and a rear part having side walls whose section corresponds substantially to the section of the opening of the front face, and comprising a peripheral shoulder allowing the tunnel to be fixed by pinching the edge of the opening of the front face of the enclosure between said peripheral shoulder and the front plate.
- the rear part is formed by a rigid molded part.
- the plate is intended to receive a plurality of loudspeakers, the rear part has a projection to connect the tubular part to the section of the front plate.
- FIG. 1 shows a sectional view of the loudspeaker equipped with a tube according to the invention
- FIG. 2 shows a sectional view of an alternative embodiment
- FIG. 3 shows a front view of said alternative embodiment.
- the loudspeaker usually comprises a membrane (1) actuated by a motor (2), and a mount (3).
- the acoustic tube (4) is formed by a cardboard tube with a section substantially equal to the section of the membrane (1) and of a length slightly less than the section.
- the tube (4) passes through the wall (5) and is fixed to the outer face (6) of the wall by a silicone seal (7).
- the silicone seal (7) provides a damping and mechanical decoupling function for the tube (4) and the wall (5). It also performs the function of bonding the ring (8) provided at the end of the tube (4), and sealing between the interior of the enclosure and the exterior.
- the ring (8) is glued to the front end of the tube (4). It is formed by a wooden ring. It includes a series of threaded inserts (9, 10). These inserts (9, 10) allow the loudspeaker to be fixed to the wall (5).
- the tube (4) is covered on its inner faces by a damping foam such as a fabric damper (11) of small thickness, for example a felt, a glass felt or a sheet of foam.
- a damping foam such as a fabric damper (11) of small thickness, for example a felt, a glass felt or a sheet of foam.
- the tube (4) is closed at the rear by a disc (12) made of high porosity acoustic foam. This foam lets air through, but dampens the high frequencies.
- the tube (4) is also filled with a fleece (13) forming a high-cut filter. These different damping means reduce the reverberations inside the enclosure.
- Figures 2 and 3 show views, respectively in section and from the front, of an alternative embodiment.
- the acoustic tunnel according to this variant consists of a front plate (20) and a rear part (30).
- the front plate (20) is a molded plastic part having in the example described two circular lights (21, 22) and holes (23 to 29) for fixing for loudspeakers, for example a loudspeaker "tweeter” for the light (21) and a "bass / midrange” speaker for the light (22).
- the border (40) of the front plate has a "quarter round" shape.
- the enclosure has a cutout on its front face whose shape and dimensions are close to that of the front plate, but slightly lower.
- the rear part (30) has lateral faces (31, 32) whose front end has an external section identical to that of the internal section of the lumen of the front face of the enclosure.
- a peripheral border (33) forms a shoulder delimiting a groove (34) engaging the thickness of the front face (35) of the enclosure.
- the connection between the plate (20) and the rear face (30) takes place at using screws (41, 42).
- a spacer (43) stiffens the connection between the plate (20) and the rear face (30) and prevents unwanted vibrations from the front plate.
- the rear face has a tubular part (4) having a front rear opening covered by a foam (50).
- the outer surface (45) of the rear part can be coated with a material such as a felt, to avoid sound reflections.
- a foam ring (46) improving the acoustic characteristics of the device.
- the realization of the device in two parts has many advantages. It simplifies the manufacture of the enclosure, by providing only one large opening on the front face of the enclosure. It simplifies assembly by preparing the mounting of the speakers and the wiring on the front plate, which can also receive a terminal block
- the tunnel according to the invention makes it possible to easily produce enclosures whose front face is not easily removable, for example an enclosure made of bonded glass or an enclosure formed by a monolithic tubular material. It allows to dissociate the stage of construction of the external enclosure, and integration of the loudspeakers. It also facilitates a possible technical intervention.
- Filters and other components can be mounted on the plate or in the rear part, in order to provide optimal accessibility.
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU18836/99A AU1883699A (en) | 1997-12-24 | 1998-12-24 | Acoustic tunnel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/16469 | 1997-12-24 | ||
FR9716469A FR2773041B1 (fr) | 1997-12-24 | 1997-12-24 | Tunnel acoustique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999034641A1 true WO1999034641A1 (fr) | 1999-07-08 |
Family
ID=9515103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/002874 WO1999034641A1 (fr) | 1997-12-24 | 1998-12-24 | Tunnel acoustique |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1883699A (fr) |
FR (1) | FR2773041B1 (fr) |
WO (1) | WO1999034641A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2373890A1 (es) * | 2008-08-07 | 2012-02-10 | Ángel Julio Moretón Cesteros | Pantalla acústica interior para altavoces de alta fidelidad. |
CN113596641A (zh) * | 2021-07-30 | 2021-11-02 | 安徽江淮汽车集团股份有限公司 | 一种用于汽车的低音扬声器 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3288368B2 (ja) * | 2000-03-14 | 2002-06-04 | 有限会社サワキ | スピーカーエンクロージャー |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4123621A (en) * | 1977-12-05 | 1978-10-31 | Walker Frank J | Acoustical speaker device |
DE2724631A1 (de) * | 1977-06-01 | 1978-12-07 | Eugen Otto Butz | Halterung fuer lautsprecher in kraftfahrzeugen |
US4337380A (en) * | 1979-07-18 | 1982-06-29 | Clarion Co., Ltd. | Structure for mounting speaker |
US4790407A (en) * | 1985-08-29 | 1988-12-13 | Pioneer Electronic Corporation | Resonance-compensated speaker system for vehicle |
US4877105A (en) * | 1987-09-08 | 1989-10-31 | Honda Giken Kogyo Kabushiki Kaisha | Rear speaker unit for a motor vehicle |
WO1991019405A1 (fr) * | 1990-06-08 | 1991-12-12 | Simon Paul Carrington | Haut-parleur a diaphragme possedant un conduit d'air |
EP0669781A1 (fr) * | 1992-07-23 | 1995-08-30 | TOZAWA, Katsutoshi | Enceinte acoustique |
-
1997
- 1997-12-24 FR FR9716469A patent/FR2773041B1/fr not_active Expired - Fee Related
-
1998
- 1998-12-24 WO PCT/FR1998/002874 patent/WO1999034641A1/fr active Application Filing
- 1998-12-24 AU AU18836/99A patent/AU1883699A/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2724631A1 (de) * | 1977-06-01 | 1978-12-07 | Eugen Otto Butz | Halterung fuer lautsprecher in kraftfahrzeugen |
US4123621A (en) * | 1977-12-05 | 1978-10-31 | Walker Frank J | Acoustical speaker device |
US4337380A (en) * | 1979-07-18 | 1982-06-29 | Clarion Co., Ltd. | Structure for mounting speaker |
US4790407A (en) * | 1985-08-29 | 1988-12-13 | Pioneer Electronic Corporation | Resonance-compensated speaker system for vehicle |
US4877105A (en) * | 1987-09-08 | 1989-10-31 | Honda Giken Kogyo Kabushiki Kaisha | Rear speaker unit for a motor vehicle |
WO1991019405A1 (fr) * | 1990-06-08 | 1991-12-12 | Simon Paul Carrington | Haut-parleur a diaphragme possedant un conduit d'air |
EP0669781A1 (fr) * | 1992-07-23 | 1995-08-30 | TOZAWA, Katsutoshi | Enceinte acoustique |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2373890A1 (es) * | 2008-08-07 | 2012-02-10 | Ángel Julio Moretón Cesteros | Pantalla acústica interior para altavoces de alta fidelidad. |
CN113596641A (zh) * | 2021-07-30 | 2021-11-02 | 安徽江淮汽车集团股份有限公司 | 一种用于汽车的低音扬声器 |
Also Published As
Publication number | Publication date |
---|---|
FR2773041A1 (fr) | 1999-06-25 |
FR2773041B1 (fr) | 2002-12-13 |
AU1883699A (en) | 1999-07-19 |
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