EP2400782B1 - One-piece stereophonic device for a speaker enclosure - Google Patents
One-piece stereophonic device for a speaker enclosure Download PDFInfo
- Publication number
- EP2400782B1 EP2400782B1 EP20110290244 EP11290244A EP2400782B1 EP 2400782 B1 EP2400782 B1 EP 2400782B1 EP 20110290244 EP20110290244 EP 20110290244 EP 11290244 A EP11290244 A EP 11290244A EP 2400782 B1 EP2400782 B1 EP 2400782B1
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- EP
- European Patent Office
- Prior art keywords
- speakers
- loudspeakers
- stereophonic
- listening
- relative
- 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.)
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- 230000000295 complement effect Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 description 8
- 210000005069 ears Anatomy 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 238000001228 spectrum Methods 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/024—Positioning of loudspeaker enclosures for spatial sound reproduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
Definitions
- the present invention relates to a monobloc device and stereophonic amplified acoustic speaker.
- loudspeakers and stereophonic systems there are many kinds of loudspeakers and stereophonic systems on the audio market, but two large product families can be distinguished schematically within this market: the acoustic loudspeakers on the one hand, dedicated in the first place high-fidelity or so-called "home theater" installations and, on the other hand, loudspeakers designed to be placed on a table or on a bookcase as described in the document GB 2016863 A , generally less expensive and less efficient but whose use has grown much recently, particularly in the context of improving the sound quality of files stored on computers.
- This type of loudspeaker is often randomly placed on horizontal supports, such as worktops, especially tables or desks, depending on the available space and available space. These speakers are thus located more or less in front of the listener and preferably, if it is placed in the center of them, so that they can deliver a stereophonic effect.
- the small height in height of these, the lack of sufficient distance of the listener, the reflections induced by any horizontal plane which is located nearby as well as the spacing of the enclosures, chosen or obligatory, and too often inappropriate, are many brakes to quality listening.
- the device, object of the present invention and claimed by claim 1 aims to overcome these disadvantages and is provided with front speakers (2) and rear speakers (3), the latter being inclined towards the top, said front (2) and rear (3) loudspeakers being arranged so that the produced sounds are simultaneously broadcast to two opposite stereophonic axes.
- the loudspeakers (3) are oriented rearwardly and upwardly at a preferentially varying angle, but this is not mandatory, between 25 ° and 70 ° relative to the horizontal plane of 'listening.
- Said angle can also possibly be adjustable according to the characteristics of the listening room and the listening position of the listener in height (large angle for a sitting position and small angle for a standing position which varies respectively from 90 ° to 45 ° and 45 ° to 0 °).
- the device according to the invention consists of a piece of furniture or worktop, in particular a table or a desk, which groups together a one-piece acoustic system (1) with front speakers (2), oriented conventionally towards listeners placed at a distance from those -this. Said speakers (2) are connected, but it is not mandatory, by at least one subwoofer. Furthermore, complementary stereophonic loudspeakers (3) are placed behind symmetrically opposite said loudspeakers (2) and in such a way that said loudspeakers (3) can diffuse sound upwardly in an inclined manner. and in the opposite direction of that of the front loudspeakers (2).
- the inclination angle of said loudspeakers (3) may be variable so as to preferentially form an incident angle varying between 25 ° and 70 ° relative to the horizontal.
- the device in order to obtain an optimal reflection effect, will preferably be placed near, or advantageously against, a standard wall, or a vertical wall, (8) which will make it possible to redistribute the high frequencies.
- the support of said rear speakers (3) may also be indifferently fixed or on the contrary adjustable to obtain a variable angle.
- this same optimal listening area is listed in (4) in the Figure 1 and (4 ') in the Figure 2 ; unlike zone (4) of the Figure 1 , the zone (4 ') of the Figure 2 is located at a distance from the cabinet (1), given the lateral constraints related to the stereophonic effect.
- the complementary action of the speakers (3) which are directed towards a wall, in order to diffuse a reflected sound represented here at 30 ° in the diagram ( Figure 2 ), allows the listener to approach without inconvenience closer to the furniture or the office, in position (5), and this, inside the portion defined by the space (7 '). Said enlarged space allows it to move as in position (6) away from the furniture, more freely, but while remaining within said optimal listening area (7 ').
- the device as defined in this way makes it possible, in several cases, to direct the sound towards the listener when it is located outside the field of the qualitatively desired listening area (4) or (4 ') of the loudspeakers. facade (2).
- the loudspeakers (3) which use the reflection of wall or that of a vertical screen will be able to take the relay in the zone (7) and (7 ') where the loudspeakers (2) have ceased to be effective.
- Variations of this configuration may be considered. Either, in order to widen the bandwidth by arranging tweeters to the rear of the speakers (3), also oriented upwards or at an adjustable angle, or possibly also at a different inclination angle from that said midrange speakers (3). Moreover, in order to allow a more precise adaptation of the system to the type of wall surface and the degree of absorption of the listening room, it will be possible to have electronic adjustments for attenuating or configuring the intensity of the sound signal and than the response curve of the system and said loudspeakers (3). Re-phase systems of the front (front) (2) and rear (3) loudspeaker zones may finally be arranged according to the different possible listening configurations.
- the device according to the invention is preferably placed close to, or advantageously against, a standard wall, or a vertical wall (8).
- said vertical wall consists of a screen (8 '), for example an LCD, television, sound or computer screen; this is illustrated in the Figure 3 or at Figure 4 .
- a screen (8 ') for example an LCD, television, sound or computer screen; this is illustrated in the Figure 3 or at Figure 4 .
- the rear loudspeakers (3) have as previously an angle relative to the horizontal plane, between 25 and 70 °, so that the sound that emanates reflects against the screen (8 ').
- the Figure 4 presents an alternative embodiment of the device illustrated in FIG. Figure 3 ; in order to save space, thus reducing the depth of the monoblock assembly (1), the front speakers (2) are placed under the rear speakers (3), while in the Figures 1 to 3 , the front (2) and rear (3) speakers are at approximately the same level.
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- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
Description
La présente invention concerne un dispositif monobloc et stéréophonique d'enceinte acoustique amplifiée.The present invention relates to a monobloc device and stereophonic amplified acoustic speaker.
Il existe sur le marché audio de nombreuses sortes d'enceintes acoustiques et de systèmes stéréophoniques mais on peut distinguer schématiquement à l'intérieur de ce marché deux grandes familles de produits : les enceintes acoustiques de sol, d'une part, dédiées en premier lieu aux installations haute fidélité ou dites de « home cinéma » et, d'autre part, les enceintes acoustiques conçues pour être posées sur une table ou sur une bibliothèque comme celle décrite dans le document
Ce type d'enceintes acoustiques est souvent disposé de façon aléatoire sur des supports horizontaux, tels que les plans de travail, en particulier les tables ou bureaux, en fonction de la place et de la surface disponibles concernées. Ces enceintes sont ainsi situées plus ou moins en face de l'auditeur et préférablement, si celui-ci est placé au centre de celles-ci, de manière à ce qu'elles puissent délivrer un effet stéréophonique. La faible taille en hauteur de celles ci, l'absence de recul suffisant de l'auditeur, les réflexions induites par tout plan horizontal qui est situé à proximité ainsi que l'écartement des enceintes, choisi ou obligatoire, et trop souvent inapproprié, sont autant de freins à une écoute de qualité.This type of loudspeaker is often randomly placed on horizontal supports, such as worktops, especially tables or desks, depending on the available space and available space. These speakers are thus located more or less in front of the listener and preferably, if it is placed in the center of them, so that they can deliver a stereophonic effect. The small height in height of these, the lack of sufficient distance of the listener, the reflections induced by any horizontal plane which is located nearby as well as the spacing of the enclosures, chosen or obligatory, and too often inappropriate, are many brakes to quality listening.
Afin de pallier cet inconvénient, il est possible d'avoir recours à la catégorie des enceintes acoustiques de sol, disposées alors de chaque coté du plan de travail, tel que table ou bureau, concerné. Toutefois, dans le cadre d'une utilisation stéréophonique à partir d'un lieu d'écoute situé au devant d'un tel plan de travail et d'une position assise de l'auditeur qui se situerait idéalement au milieu dudit plan de travail, on dispose d'un angle d'écoute très réduit par rapport aux dits haut-parleurs ; ceux-ci sont en effet disposés alors presque à angle droit et souvent en contrebas de part et d'autre des oreilles de l'auditeur, qui n'est plus en mesure ainsi de percevoir de façon satisfaisante ni l'effet stéréophonique ni la totalité du spectre médium aigu, compte tenu de la forte atténuation provenant de l'angle d'écoute réduit dont il dispose. De plus, l'implantation de ce type d'enceinte raccordée à ses différents équipements interdit dans la pratique à ce plan de travail horizontal toute espèce de mobilité.To overcome this drawback, it is possible to use the category of floor acoustic speakers, then arranged on each side of the worktop, such as table or desk, concerned. However, in the context of a stereophonic use from a listening place located in front of such a work plan and a sitting position of the listener which would be located ideally in the middle of said work plan, there is a very small listening angle compared to said speakers; these are indeed arranged then almost at right angles and often below both ears of the listener, which is no longer able to perceive satisfactorily either the stereophonic effect or the totality of the acute mid-spectrum, given the high attenuation resulting from the reduced listening angle at its disposal. In addition, the implementation of this type of enclosure connected to its various equipment prohibits in practice this horizontal work plan any kind of mobility.
Le dispositif, objet de la présente invention et revendiqué par la revendication 1, a pour objectif de pallier ces différents inconvénients et est muni de haut-parleurs de façade (2) et de haut-parleurs arrières (3), ces derniers étant inclinés vers le haut, lesdits haut-parleurs de façade (2) et arrières (3) étant disposés de telle sorte que les sons produits sont simultanément diffusés vers deux axes stéréophoniques opposés.The device, object of the present invention and claimed by
Selon un mode préférentiel de réalisation, les haut-parleurs (3) sont orientés vers l'arrière et vers le haut selon un angle variant préférentiellement, mais ce n'est pas obligatoire, entre 25° et 70° par rapport au plan horizontal d'écoute.According to a preferred embodiment, the loudspeakers (3) are oriented rearwardly and upwardly at a preferentially varying angle, but this is not mandatory, between 25 ° and 70 ° relative to the horizontal plane of 'listening.
Ledit angle peut aussi éventuellement être réglable en fonction des caractéristiques du local d'écoute et de la position d'écoute de l'auditeur en hauteur (angle grand pour une position assise et angle petit pour une position debout qui varie respectivement de 90° à 45° et de 45° à 0°).Said angle can also possibly be adjustable according to the characteristics of the listening room and the listening position of the listener in height (large angle for a sitting position and small angle for a standing position which varies respectively from 90 ° to 45 ° and 45 ° to 0 °).
D'autres caractéristiques du dispositif selon la présente invention ressortiront mieux à la lecture de la description qui va suivre en faisant référence aux figures suivantes :
- la
Figure 1 est une vue en coupe transversale du dispositif selon l'invention ; - la
Figure 2 est une vue en plan du même dispositif où sont représentées schématiquement les zones optimales d'écoute représentées sur un plan horizontal ; - la
Figure 3 illustre une vue en coupe transversale d'un autre mode de réalisation du dispositif selon l'invention ; - la
Figure 4 est une vue en coupe transversale d'une variante du dispositif illustré à laFigure 3 .
- the
Figure 1 is a cross-sectional view of the device according to the invention; - the
Figure 2 is a plan view of the same device which schematically shows the optimal listening areas represented on a horizontal plane; - the
Figure 3 illustrates a cross-sectional view of another embodiment of the device according to the invention; - the
Figure 4 is a cross-sectional view of a variant of the device illustrated in FIG.Figure 3 .
Le dispositif selon l'invention, référence étant faite à la
Sur la
Le dispositif tel qu'ainsi défini permet de diriger selon plusieurs cas de figure le son vers l'auditeur lorsque celui-ci est situé hors du champ de la zone d'écoute qualitativement souhaitée (4) ou (4') des haut-parleurs de façade (2).The device as defined in this way makes it possible, in several cases, to direct the sound towards the listener when it is located outside the field of the qualitatively desired listening area (4) or (4 ') of the loudspeakers. facade (2).
En effet, dans toutes les hypothèses où les oreilles de l'auditeur se trouveront, soit pour une position assise de celui-ci à un bureau (position globalement référencée 5) ou devant un écran, soit pour une position debout dans une zone à proximité d'un meuble quelconque ou d'un bureau équipé de ces haut-parleurs arrières (position globalement référencée 6), les haut-parleurs (3) qui utilisent la réflexion murale ou celle d'un écran vertical seront en mesure de prendre le relais dans la zone (7) et (7') là où les haut-parleurs (2) auront cessé d'être efficaces.Indeed, in all cases where the ears of the listener will be, either for a sitting position of it to a desk (position referenced globally 5) or in front of a screen, or for standing in a nearby area of any piece of furniture or of an office equipped with these rear loudspeakers (position generally referenced 6), the loudspeakers (3) which use the reflection of wall or that of a vertical screen will be able to take the relay in the zone (7) and (7 ') where the loudspeakers (2) have ceased to be effective.
Les avantages ainsi obtenus sont multiples : on dispose, dans un système unique et monobloc, de la possibilité de diffuser un son dont le rendu sera parfaitement calibré à l'avance, non aléatoire ainsi qu'homogène quel que soit le point d'écoute, que l'on soit assis devant le bureau, l'écran ou le meuble concerné, debout à faible distance de ceux-ci ou au contraire à distance éloignée. Par ailleurs, la réflexion latérale des mêmes fréquences médium et aigues sur les parois verticales concernées permettra d'améliorer dans la plupart des cas l'effet stéréophonique obtenu. L'ensemble, enfin, qui est de conception simple facile à utiliser, ne nécessite aucun réglage ni calibrage particulier.The advantages thus obtained are multiple: in a single, monobloc system, the possibility of broadcasting a sound whose rendering will be perfectly calibrated in advance, non-random as well as homogeneous whatever the point of listening, is available. whether one is sitting in front of the desk, the screen or the piece of furniture concerned, standing a short distance from them or, on the other hand, far away. Moreover, the lateral reflection of the same medium and high frequencies on the vertical walls concerned will make it possible to improve in most cases the stereophonic effect obtained. The assembly, finally, which is simple in design easy to use, requires no adjustment or special calibration.
Des variantes de cette configuration, non représentées dans les
Un décalage des haut-parleurs arrière (3) par rapport aux haut-parleurs avant (2), ces derniers étant en retrait vers le centre du meuble alors que les haut-parleurs arrière (3) seraient placés davantage vers l'extérieur permettra par ailleurs dans certaines conditions de privilégier une écoute du meuble à plus grande distance de celui-ci en augmentant à ce niveau l'effet stéréophonique.An offset of the rear speakers (3) from the front speakers (2), the latter being recessed towards the center of the cabinet while the rear loudspeakers (3) are placed further out elsewhere in certain conditions to favor a listening of the furniture to greater distance of this one by increasing at this level the stereophonic effect.
Dans les
Selon un mode particulier de réalisation de l'invention, ladite paroi verticale consiste en un écran (8'), par exemple un écran LCD, de télévision, sonore ou d'ordinateur ; c'est ce qui est illustré à la
Dans la
La
Claims (10)
- A stereophonic device made up of a single-piece unit (1), characterized in that it is intended to be positioned near, or against, a partition (8), or vertical wall, said device being provided with front speakers (2) and rear speakers (3), the latter being oriented toward the rear and inclined upward, said front (2) and rear (3) speakers being positioned such that the sounds produced are simultaneously broadcast in two opposite directions, said sounds produced by the rear speakers (3) being reflected toward the front of the device owing to said partition (8).
- The device according to claim 1, characterized in that said rear speakers (3) are inclined upward by an angle comprised between 25° and 70° relative to the horizontal.
- The device according to one of claims 1 or 2, characterized in that a second pair of speakers, complementary in frequency, is also oriented toward the rear.
- The device according to any one of claims 1 to 3, characterized in that it is provided with a volume adjusting or attenuating system making it possible to adapt the volume of the rear speakers (3) relative to that of the front speakers (2).
- The device according to any one of claims 1 to 4, characterized in that it is provided with an adjusting system making it possible to adjust the phase of the rear speakers (3) relative to that of the front speakers (2).
- The device according to any one of claims 1 to 5, characterized in that it is provided with an adjusting system making it possible to modify the frequency response of the rear speakers (3).
- The device according to any one of claims 1 to 6, characterized in that the separation of the front speakers (2) is different from that of the rear speakers (3).
- The device according to claim 7, characterized in that the separation of the rear speakers (3) is greater than that of the front speakers (2).
- The device according to any one of claims 1 to 8, characterized in that the wall against which the sound emitted by the rear speakers (3) is reflected toward the front is a television or computer screen (8').
- The device according to claim 9, characterized in that the speakers (3) are situated above the front speakers (2).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1002660A FR2962001A1 (en) | 2010-06-25 | 2010-06-25 | MONOBLOC AND STEREOPHONIC DEVICE WITH AMPLIFIED ACOUSTIC ENCLOSURE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2400782A1 EP2400782A1 (en) | 2011-12-28 |
EP2400782B1 true EP2400782B1 (en) | 2014-09-03 |
Family
ID=43416611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20110290244 Active EP2400782B1 (en) | 2010-06-25 | 2011-05-27 | One-piece stereophonic device for a speaker enclosure |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2400782B1 (en) |
FR (1) | FR2962001A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2999855B1 (en) * | 2012-12-17 | 2015-01-16 | Cc Lab | DEVICE CONSISTING OF TWO STEREOPHONIC SPEAKERS |
EP3128762A1 (en) * | 2015-08-03 | 2017-02-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Soundbar |
US10779083B2 (en) | 2016-08-01 | 2020-09-15 | D&M Holdings, Inc. | Soundbar having single interchangeable mounting surface and multi-directional audio output |
US11363380B2 (en) | 2018-07-31 | 2022-06-14 | Hewlett-Packard Development Company, L.P. | Stereophonic devices |
FR3087987B1 (en) * | 2018-10-29 | 2020-10-09 | Cc Lab | ENLARGED STEREOPHONY DEVICE FOR SINGLE-PIECE AMPLIFIED SPEAKERS |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2407635A1 (en) * | 1977-10-27 | 1979-05-25 | Herrenschmidt Gilles | SPEAKER DEVICE |
JPS54148501A (en) * | 1978-03-16 | 1979-11-20 | Akg Akustische Kino Geraete | Device for reproducing at least 2 channels acoustic events transmitted in room |
US4410063A (en) * | 1981-03-04 | 1983-10-18 | Onkyo Kabushiki Kaisha | Loudspeaker system |
DE3201455C2 (en) * | 1982-01-19 | 1985-09-19 | Dieter 7447 Aichtal Wagner | Speaker box |
FI81471C (en) * | 1988-11-08 | 1990-10-10 | Timo Tarkkonen | HOEGTALARE GIVANDE ETT TREDIMENSIONELLT STEREOLJUDINTRYCK. |
-
2010
- 2010-06-25 FR FR1002660A patent/FR2962001A1/en not_active Withdrawn
-
2011
- 2011-05-27 EP EP20110290244 patent/EP2400782B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2400782A1 (en) | 2011-12-28 |
FR2962001A1 (en) | 2011-12-30 |
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