FR2980663A1 - Device for providing built-in invisible speaker for home theater system, has speaker, elliptical reflector, and slot, where sound waves emitted by speaker is reflected by reflector and focused to navigate through slot toward listener - Google Patents

Device for providing built-in invisible speaker for home theater system, has speaker, elliptical reflector, and slot, where sound waves emitted by speaker is reflected by reflector and focused to navigate through slot toward listener Download PDF

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Publication number
FR2980663A1
FR2980663A1 FR1102924A FR1102924A FR2980663A1 FR 2980663 A1 FR2980663 A1 FR 2980663A1 FR 1102924 A FR1102924 A FR 1102924A FR 1102924 A FR1102924 A FR 1102924A FR 2980663 A1 FR2980663 A1 FR 2980663A1
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France
Prior art keywords
speaker
slot
reflector
sound waves
reflected
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Withdrawn
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FR1102924A
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French (fr)
Inventor
Vismes Eden De
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VISMES SARL
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VISMES SARL
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Priority to FR1102924A priority Critical patent/FR2980663A1/en
Publication of FR2980663A1 publication Critical patent/FR2980663A1/en
Withdrawn legal-status Critical Current

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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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/021—Transducers or their casings adapted for mounting in or to a wall or ceiling

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  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

The device has a speaker (2), an elliptical reflector (3), and a slot (5), where sound waves emitted by the speaker is reflected by the elliptical reflector and focused to navigate through the slot toward a listener (4). The speaker is placed on a plane perpendicular to a support of an enclosure (1), to radiate the sound waves towards the elliptical reflector, where a scattering angle of the sound waves is varied by varying parameters of the reflector and an inclination of a plane of the speaker.

Description

La présente invention concerne une enceinte acoustique encastrable à haut-parleurs invisibles, rayonnant de manière indirecte à travers une fente. Actuellement, toutes les réalisations commerciales présentent un ou plusieurs haut-parleurs en rayonnement direct. Les enceintes ainsi réalisées comportent généralement une grille blanche ou noire, de manière à opacifier, donc dissimuler les haut-parleurs. Plusieurs inconvénients se dégagent : l'intégration est limitée par l'esthétique des grilles et ces dernières se comportent comme des diffracteurs vis-à-vis de l'onde sonore, dégradant fortement la reproduction des fréquences hautes. L'invention permet de réaliser une enceinte audio aux haut-parleurs invisibles et rayonnant au travers d'une ouverture mince. Ce dispositif permet une intégration totale dans un intérieur, ne laissant visible dans un mur, un plafond ou du mobilier qu'une fente de quelques centimètres de hauteur. La longueur de la fente dépend du nombre de haut-parleurs et/ou ou du nombre d'enceintes que l'on souhaite intégrer au dispositif : par exemple, on peut construire derrière une seule et même fente une enceinte large bande (1 haut-parleur), une enceinte 3 voies (3 haut-parleurs) ou 3 enceintes 3 voies (3 voies d'un système home-cinema, chacune constituée de 3 haut-parleurs). Le ou les haut-parleurs (2) sont placés sur un plan quasi perpendiculaire au support de l'enceinte (1), et rayonnent vers un réflecteur elliptique (3). L'onde sonore est alors réfléchie par ce dernier, et passe au travers de la fente. L'auditeur (4), placé perpendiculairement au plan du support, reçoit l'onde réfléchie. De manière à déformer au minimum l'onde sonore lors de son passage par la fente, cette dernière est focalisée par le réflecteur, qui adopte une courbure elliptique. La FIG.1 donne la construction géométrique : soit une ellipse de centre 0 et de foyers F et F'. Le haut-parleur (2) est incliné selon le grand axe et son centre placé en l'un des foyers F. Selon les propriétés de réflexivité de l'ellipse, on sait que toute onde produite en F se focalise en F' par réflexion sur un réflecteur (3) suivant la courbure de l'ellipse. Un haut-parleur émettant de manière privilégiée jusqu'à +/-20° de son axe de diffusion, il est possible de placer la fente (5) sur le trajet de l'onde sonore sans détérioration majeure. 1/3 En jouant sur les paramètres de l'ellipse et l'inclinaison du plan du haut-parleur, il est également possible de jouer sur l'angle de diffusion, permettant de réaliser des modèles verticaux ou horizontaux rayonnant vers une partie ou une autre de la pièce d'écoute. The present invention relates to a built-in acoustic speaker with invisible speakers, radiating indirectly through a slot. Currently, all commercial projects have one or more speakers in direct radiation. The speakers thus produced generally comprise a white or black grid, so as to opacify, thus conceal the speakers. Several drawbacks emerge: the integration is limited by the aesthetics of the grids and the latter behave like diffractors vis-à-vis the sound wave, greatly degrading the reproduction of high frequencies. The invention makes it possible to make an audio speaker with invisible loudspeakers and radiating through a thin opening. This device allows total integration into an interior, leaving visible in a wall, a ceiling or furniture a slot of a few centimeters in height. The length of the slot depends on the number of loudspeakers and / or the number of speakers that one wishes to integrate into the device: for example, one can build behind a single slot a broadband speaker (1 loudspeaker). speaker), a 3-way speaker (3 speakers) or 3 3-way speakers (3-way home theater system, each consisting of 3 speakers). The one or more loudspeakers (2) are placed in a plane almost perpendicular to the support of the enclosure (1), and radiate towards an elliptical reflector (3). The sound wave is then reflected by the latter, and passes through the slot. The listener (4), placed perpendicular to the plane of the support, receives the reflected wave. In order to deform at least the sound wave as it passes through the slot, the latter is focused by the reflector, which adopts an elliptical curvature. FIG. 1 gives the geometric construction: an ellipse of center 0 and foci F and F '. The loudspeaker (2) is inclined along the major axis and its center placed in one of the foci F. According to the reflectivity properties of the ellipse, it is known that any wave produced at F is focused in F 'by reflection on a reflector (3) according to the curvature of the ellipse. Since a speaker emits in a privileged manner up to +/- 20 ° from its diffusion axis, it is possible to place the slot (5) on the path of the sound wave without major deterioration. 1/3 By playing on the parameters of the ellipse and the inclination of the plane of the loudspeaker, it is also possible to play on the angle of diffusion, allowing to realize vertical or horizontal models radiating towards a part or a other of the listening room.

FIG.2 montre un exemple de réalisation industrielle. Il s'agit d'une enceinte audio destinée à être intégrée dans un mur en placoplâtre®, dont boîtier se monte sur deux rails métalliques standard de 48mm d'épaisseur (6). Les haut-parleurs (2) sont montés horizontalement et sont cachés derrière une plaque (1). L'onde sonore produite est réfléchie par le réflecteur elliptique (3) et traverse la fente (5). L'enceinte pouvant être peinte, enduite ou cachée derrière un parement en bois, l'utilisateur ne voit qu'une mince fente qui cache totalement les haut-parleurs. 20 25 2/3 FIG. 2 shows an example of industrial realization. It is an audio speaker intended to be integrated in a plasterboard wall, whose case is mounted on two standard metal rails 48mm thick (6). The loudspeakers (2) are mounted horizontally and are hidden behind a plate (1). The sound wave produced is reflected by the elliptical reflector (3) and passes through the slot (5). The speaker can be painted, coated or hidden behind a wooden siding, the user sees a thin slot that completely hides the speakers. 20 25 2/3

Claims (3)

REVENDICATIONS1) Dispositif pour réaliser une enceinte acoustique encastrable à haut-parleurs invisibles rayonnant de manière indirecte, constituée de haut-parleurs (2), d'un réflecteur de forme elliptique (3) et d'une fente (5). CLAIMS1) Device for producing a concealed acoustic loudspeaker with indirect speakers radiating indirectly, consisting of loudspeakers (2), an elliptical reflector (3) and a slot (5). 2) Dispositif selon la revendication 1 caractérisé en ce que l'onde sonore se réfléchit sur un réflecteur de forme elliptique (3). 2) Device according to claim 1 characterized in that the sound wave is reflected on an elliptical reflector (3). 3) Dispositif selon les revendications 1 et 2 caractérisé en ce que l'onde sonore passe à travers une fente (5), après avoir été focalisée par le réflecteur (3). 20 25 3/3 3) Device according to claims 1 and 2 characterized in that the sound wave passes through a slot (5), after being focused by the reflector (3). 20 25 3/3
FR1102924A 2011-09-27 2011-09-27 Device for providing built-in invisible speaker for home theater system, has speaker, elliptical reflector, and slot, where sound waves emitted by speaker is reflected by reflector and focused to navigate through slot toward listener Withdrawn FR2980663A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1102924A FR2980663A1 (en) 2011-09-27 2011-09-27 Device for providing built-in invisible speaker for home theater system, has speaker, elliptical reflector, and slot, where sound waves emitted by speaker is reflected by reflector and focused to navigate through slot toward listener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1102924A FR2980663A1 (en) 2011-09-27 2011-09-27 Device for providing built-in invisible speaker for home theater system, has speaker, elliptical reflector, and slot, where sound waves emitted by speaker is reflected by reflector and focused to navigate through slot toward listener

Publications (1)

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FR2980663A1 true FR2980663A1 (en) 2013-03-29

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FR1102924A Withdrawn FR2980663A1 (en) 2011-09-27 2011-09-27 Device for providing built-in invisible speaker for home theater system, has speaker, elliptical reflector, and slot, where sound waves emitted by speaker is reflected by reflector and focused to navigate through slot toward listener

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230007389A1 (en) * 2019-12-04 2023-01-05 Sony Group Corporation Speaker system and sound output method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068955A (en) * 1959-11-27 1962-12-18 Albert A W J Van Hedel Device for the radiation of sound waves
US4421200A (en) * 1981-12-16 1983-12-20 Ferralli Michael W Elliptically shaped transducer enclosure
US4629030A (en) * 1985-04-25 1986-12-16 Ferralli Michael W Phase coherent acoustic transducer
US5268539A (en) * 1989-08-04 1993-12-07 Hiroshi Ono Acoustic apparatus
US5388162A (en) * 1991-07-09 1995-02-07 Sohn; Tong-Hoon Sound innovation speaker system
US20080080727A1 (en) * 2006-09-30 2008-04-03 Timothy Prenta In-wall sub-woofer system with high-volume displacement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068955A (en) * 1959-11-27 1962-12-18 Albert A W J Van Hedel Device for the radiation of sound waves
US4421200A (en) * 1981-12-16 1983-12-20 Ferralli Michael W Elliptically shaped transducer enclosure
US4629030A (en) * 1985-04-25 1986-12-16 Ferralli Michael W Phase coherent acoustic transducer
US5268539A (en) * 1989-08-04 1993-12-07 Hiroshi Ono Acoustic apparatus
US5388162A (en) * 1991-07-09 1995-02-07 Sohn; Tong-Hoon Sound innovation speaker system
US20080080727A1 (en) * 2006-09-30 2008-04-03 Timothy Prenta In-wall sub-woofer system with high-volume displacement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230007389A1 (en) * 2019-12-04 2023-01-05 Sony Group Corporation Speaker system and sound output method
US11877121B2 (en) * 2019-12-04 2024-01-16 Sony Group Corporation Speaker system and sound output method

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