EP1515584A1 - Haut-parleur et enceinte acoustique correspondante - Google Patents
Haut-parleur et enceinte acoustique correspondante Download PDFInfo
- Publication number
- EP1515584A1 EP1515584A1 EP04364058A EP04364058A EP1515584A1 EP 1515584 A1 EP1515584 A1 EP 1515584A1 EP 04364058 A EP04364058 A EP 04364058A EP 04364058 A EP04364058 A EP 04364058A EP 1515584 A1 EP1515584 A1 EP 1515584A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- loudspeaker
- electromagnetic means
- loudspeaker according
- speaker
- 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
Links
- 239000012528 membrane Substances 0.000 claims abstract description 137
- 238000004519 manufacturing process Methods 0.000 claims abstract description 42
- 230000010287 polarization Effects 0.000 claims description 9
- 238000001228 spectrum Methods 0.000 claims description 8
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 6
- 150000002910 rare earth metals Chemical class 0.000 claims description 6
- 230000005415 magnetization Effects 0.000 claims description 5
- 230000005291 magnetic effect Effects 0.000 abstract description 38
- 238000013016 damping Methods 0.000 abstract description 2
- 239000006260 foam Substances 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 13
- 230000004907 flux Effects 0.000 description 10
- 229910001172 neodymium magnet Inorganic materials 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000004087 circulation Effects 0.000 description 5
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 4
- KPLQYGBQNPPQGA-UHFFFAOYSA-N cobalt samarium Chemical compound [Co].[Sm] KPLQYGBQNPPQGA-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000239290 Araneae Species 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000195940 Bryophyta Species 0.000 description 1
- 240000008415 Lactuca sativa Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000011929 mousse Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000012045 salad Nutrition 0.000 description 1
- 230000001755 vocal 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/063—Loudspeakers using a plurality of acoustic drivers
Definitions
- the present invention relates to the field of sound and audio and more specifically, the invention relates to loudspeakers and loudspeakers corresponding.
- speakers produce sound through vibration of a membrane.
- An electric coil attached to the membrane and which moves in a gap where there is a magnetic field (the air gap being understood between a cylinder head and a core), sets the membrane in motion when the coil is covered by an electric current.
- the magnetic field comes from a stream magnet created by a magnet and circulating in the cylinder head, the core and the gap. The latter makes it possible to control in intensity and frequency the vibrations of the membrane and therefore the desired sound reproduction.
- the central portion of the membrane 13 is closed by a core cover 17 located approximately at the same level as the suspension 15.
- a disadvantage of this state of the art is that it does not make it possible to obtain compact speakers, the magnetic circuit (including in particular the coil, the magnet and the core) being placed at the rear of this assembly.
- the depth P of the loudspeaker 20 is directly related to the difference in dimension along the axis of the loudspeaker 20 between the peripheral suspension 25 and the frame 24.
- bass speakers frequencies up to 500 Hz (or “boomer”), of medium frequencies (between 200 and 3000 Hz) (or “medium”).
- the invention in its various aspects is intended in particular to overcome these disadvantages of the prior art.
- an object of the invention is to provide a loudspeaker for wide sound spectrum.
- the invention also aims to reduce the size of the loudspeaker while maintaining a wide sound spectrum.
- a complementary object of the invention is to provide a loudspeaker to produce a good quality sound (including high fidelity) particularly well suited to a wide variety of environments (for example, for apartment acoustic speaker, for home theater systems, for systems intended for vehicles (in particular to be placed in dashboards or seats), for audio-video devices ).
- Yet another object of the invention is to provide a sound source for spatial coherence with limited and well-controlled diffraction effects. More precisely, an objective of the invention is to obtain a directivity index (noted DI) which grows regularly and without accident (or discontinuity) depending of the frequency.
- DI directivity index
- An object of the invention is also to enable a production relatively easy of the speaker.
- the loudspeaker is remarkable in what the second membrane and the second electromagnetic means are positioned substantially within the cavity.
- the quality of the sound produced is good and compatible with high fidelity sound reproduction.
- the spatial diffusion is optimized for the sound produced by the second membrane.
- the loudspeaker is remarkable in that that the cylinder head is contiguous to the first and second magnets by presenting a magnetization of the same polarization in the zones of the cylinder head contiguous to first and second electromagnetic means.
- the cylinder head can be made in one part, which simplifies its manufacturing.
- the loudspeaker is remarkable in that that the cylinder head is contiguous to the first and second magnets by presenting a opposite polarization magnetization in the zones of the cylinder head contiguous with the first and second electromagnetic means.
- the magnetizations impose a flow circulation associated with the first and second means respectively electromagnetic and circulating in the cylinder head.
- flows in absolute value
- flows entrench themselves in the breech, which reduces the section and therefore the breech height. In this way, it is possible to reduce the bulk or the height of the speaker.
- the cylinder head is then preferably produced in two parts.
- the loudspeaker is remarkable in that that the first and second sound production means are configured from so that the first and second frequency bands cover a spectrum continuous by presenting an almost constant acoustic response between two predetermined extreme frequency values.
- the speaker is well suited for use in a broadband frequency (eg covering the mid and high frequencies) of good quality of sound reproduction (high fidelity).
- the loudspeaker is remarkable in that that the first means of sound production are configured so that the first frequency band corresponds to a medium band covering at least frequencies of the order of 500 to 3000 Hz.
- the frequencies of the order 500 to 3000 Hz correspond at very useful frequencies in the audio field and in particular the human vocal restitution.
- a membrane associated with a medium band covering frequencies of about 500 to 3000 Hz (or even lower) has a diameter relatively large to accommodate, inside the cavity formed by the membrane, the second means of sound production.
- the loudspeaker can have a very large bandwidth which covers, for example, low, mid and high frequencies while having a reduced size and maintaining a great ease of assembly.
- the third core and the third magnet is preferentially common with respectively the first or second core and / or the first or second magnet to optimize the reduction of the size and / or height of the speaker.
- the loudspeaker is remarkable in that at least one of the magnets is of the rare-earth type.
- the loudspeaker is remarkable in that at least one of the magnets is of the Neodymium-Iron-Bore (NeFeB) type.
- Neodymium-Iron-Boron being a relatively common compound.
- the loudspeaker is remarkable in that that the first membrane is concave seen from the outside of the loudspeaker.
- the loudspeaker is remarkable in that that the first membrane is convex from the outside of the loudspeaker.
- the first membrane being convex minimizes the effects of diffraction because it leads to a continuity of the surface in the environment of the second means of sound production (for example " Tweeter ").
- the general principle of the invention is based on an original installation of the loudspeaker reverse motor which comprises at least two associated membranes each to a spectrum of sound frequencies coaxially mounted. So, the loudspeaker depth is essentially a function of the clutter of the chassis and outer membrane (producing the lowest frequencies sound).
- the loudspeaker efficiency i.e. performance associated with acoustic level for power consumption given
- the loudspeaker efficiency i.e. performance associated with acoustic level for power consumption given
- rare-earth type magnets for example of the Neodymium-Iron-Boron type (or NdFeB) or Samarium-Cobalt (SmCo)
- the magnetic energy is about ten times stronger in rare-earth magnets than in ferritic magnets.
- FIG. 3 an embodiment of a two-diaphragm loudspeaker 30 according to the invention is presented.
- the magnet 312 is here outside the yoke 38, a space between the magnet 312 and the yoke 38 creating a magnetic field B1 in a first air gap in which the coil 311 can move in the direction of the axis 33.
- the magnets 312 and 322 are made of rare earths of Samarium-Cobalt type.
- the magnet 322 is here inside the yoke 38, a space located between the core 329 and the yoke 38 creating a magnetic field B2 in a second gap in which the coil 321 can move in the direction of the axis 33.
- the speaker 30 makes it possible to produce sound in two ranges of frequencies, the sources at medium and high frequencies respectively being associated respectively with the first and the second magnetic circuits (for intermediate respectively currents I1 and I2).
- the frequency response of the sound production sets is determined by shapes and dimensions according to rules known to man of career.
- the currents supplying the coils 311 and 321 are also filtered so that the acoustic response of the speaker 30 is as constant as possible in the band under consideration (eg 500 Hz to 20 KHz) so that the sound output is of good quality.
- each of the two membranes 313 and 323 is wide spatial diffusion and thus covers the same spatial area (for example in a room of house or in a vehicle) with average (membrane 313) and with high (membrane 323) frequency.
- the loudspeaker 30 thus makes it possible to produce sound with an answer quasi-linear or almost constant acoustic level in a wide spectrum while having a small footprint (the depth of the speaker is at illustrative title of 4.5 cm).
- the person skilled in the art can adapt the diameter of the membranes 313 and 323 (which may be less than or greater than 8 cm respectively) and at 3 cm), their depth and their shape (particularly conical profile, spherical, %) depending on the sound characteristics (spectrum, directivity, %) sought.
- the magnets 312 and / or 322 are made of ferrite.
- the volume occupied by the corresponding magnetic circuits is then more large and is, for example, well suited for living room acoustic speakers.
- the second set of sound production is not located substantially inside the cavity created by the membrane 313, while remaining coaxial with the first set of sound production: it can notably placed in a central recessed portion of the membrane 313 or outside of the cavity formed by the latter.
- FIGs 4 and 5 schematically show variants 40 and 50 of the speaker shown in Figure 3.
- the speakers 40 and 50 are especially well suited to domestic applications.
- the diameter of the membranes is different (of the order of 11 cm for the membranes 413 and 513 and 2 cm for the membranes 423 and 523).
- the depth of the loudspeakers 40 and 50 is respectively of the order of 2.5 cm and 3 cm.
- the medium membrane 513 is located at the inside of the frame 54: the membrane 513 is concave seen from the outside of the loudspeaker 50.
- the treble membrane 523 is convex.
- the first production assembly is not included between the frame 54 and the membrane 513.
- the volumes of the magnets are larger than on the loudspeaker 50.
- the efficiency of the loudspeaker 30 is therefore higher than that of the speaker 30.
- the tweeter is more before on the speaker 50 and the total depth of the speaker 30 is greater than that of the loudspeaker 50.
- the membranes 413 and 423 are convex views from the outside of the speaker 40.
- the first production unit is in this case between frame 44 and the membrane 413.
- Figures 6 to 8 schematically show variants 60, 70 and 80 of shown in Figure 3.
- the speakers 60, 70 and 80 are especially well suited to applications requiring small footprint as much in width as in depth (especially domestic applications or for vehicle acoustic systems).
- the diameter of the membranes is lower (from the order of 6.5 cm and 5.5 cm respectively for membranes 713 and 813 and 1.5 cm for membranes 623, 723 and 823).
- the radius of curvature of speaker membranes 60, 70 and 80 is also lower than that of corresponding speakers of the speaker 30.
- the depth of the loudspeakers 60, 70 and 80 is of the order 3 cm.
- Figure 9 illustrates a speaker 90 (in view from above and in a section AA) comprising three membranes 913, 923 and 933 according to a particular embodiment of the invention.
- the cylinder head 98, the magnet 912 and the field plate 914 are common to first and second sets of sound production. However, they present two separate gaps to accommodate respectively the 911 coils and 921.
- the second and third sets are positioned at inside a cavity formed by the concave membrane 913.
- the frequency response of the sound production sets is determined by shapes and dimensions according to rules known to man of career.
- the currents supplying the coils 911, 921 and 931 are further filtered by bandpass filters (possibly low-pass for bass and high-pass for treble) so that the acoustic response loudspeaker 90 is as constant as possible in the band example 100 Hz to 20 KHz) so that the sound output is good quality.
- FIG. 10 illustrates a loudspeaker 100 (viewed from above and in a section BB) comprising three membranes 1013, 1023 and 1033 according to one particular embodiment of the invention.
- the speaker 100 is similar to the speaker 90 illustrated above except for the grave membrane 1013 which is convex from the outside of the loudspeaker 100. Chassis 914, membranes 1013, 1023 and 1033, magnets 1012 and 1032, a cylinder head 108, a field plate 1014 and a core 1034 as well that coils 1011, 1021 and 1031 forming part of the loudspeaker 100 correspond respectively to frame 914, membranes 913, 923 and 933, to the magnets 912 and 932, to the cylinder head 98, to the field plate 914 and to the core 934, and the coils 911, 921 and 931 of the loudspeaker 90 and therefore will not be described further.
- the first set of production (low frequencies associated with the membrane 1013) of the loudspeaker 90 is, in this case, between the frame 1004 and the 1013 membrane unlike the corresponding element of the speaker 90 (which is located inside the concavity of the 913 membrane and therefore outside of the area between the membrane 913 and the frame 94).
- the effects of diffraction on medium and high production sets are miniminated.
- FIG 11 shows in more detail the magnetic circuits of the speaker 30 illustrated with reference to Figure 3 and in particular the magnetic flux.
- the first magnetic circuit creates a circulating magnetic flux 319 successively in the magnet 312, the field plate 316, a gap and the cylinder 38, the magnet 312 being polarized negatively (zone 317) and positively (zone 318) in contact respectively with the field plate 316 and the cylinder head 38.
- the second magnetic circuit creates a magnetic flux 3212 circulating successively in the magnet 322, the core 329, an air gap and the cylinder head 38, the magnet 312 being positively polarized (zone 3211) and negatively (zone 3210) in contact with the core 329 and the yoke 38, respectively.
- the polarizations of the magnets 312 and 322 impose the direction of circulation flows 319 and 3212 which is the same in the common area of the bolt 38.
- the flows 319 and 3212 are therefore added to the common traffic zone.
- first and second magnetic circuits are used whose cylinder head comprises two parts 121 and 122 respectively contiguous to magnets 123 (similar to the magnet 322 but inverted polarization) and 312. This implementation allows a polarization such that the magnetic flux is hiding (in absolute value) instead of adding.
- the polarization of the magnet 312 (zones 318 and 317) remains unchanged, the first magnetic flux 319 therefore flows in the same direction.
- the magnet 123 is negatively polarized (zone 1221) and negatively (zone 1220) in contact with core 329 and the 122 of the cylinder head 38, which imposes a direction of circulation of a magnetic flux 1222 opposite to the flow direction of the flow 3212 illustrated in FIG. 11.
- the flows 1222 and 319 circulate in the opposite direction in the cylinder head 38 which makes it possible to reduce its height h2 and / or the magnetic losses in the cylinder head.
- the skilled person can bring any variant into the form and material of the various constituents of the loudspeaker (in particular frame, membrane, coil, magnet, suspensions, yoke and core).
- the skilled person may also make any variant in the sound spectrum of the loudspeakers according to the invention (for example band of frequencies from 200 Hz to 20000 Hz or 50 to 1000 Hz or 50 to 20000 Hz).
- the invention also relates to equipment implementing loudspeakers according to the invention, in particular loudspeakers, headphones audio, vehicle seats or dashboards, audio equipment, video and / or multimedia comprising such loudspeakers.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
- un châssis (ou saladier) 14 ;
- un aimant 12 en ferrite;
- une culasse avec noyau 18 ; et
- une plaque de champ 19.
- une suspension intérieure (ou « spider ») 16 dans sa partie centrale ; et
- une suspension périphérique 15.
- une bobine 21 solidaire de la membrane 23 ;
- une culasse 28, une plaque de champ 29 et un aimant 22 en ferrite associés de manière rigide au châssis 24.
- une première membrane ; et
- des premiers moyens électromagnétiques pour actionner la première membrane ;
- une deuxième membrane ; et
- des deuxièmes moyens électromagnétiques pour actionner la deuxième membrane, les deuxièmes moyens électromagnétiques étant montés sensiblement sur l'axe.
- un premier aimant ;
- une première plaque de champ ;
- une première bobine associée à la première membrane et située dans un entrefer compris entre la première plaque de champ et le noyau de la culasse de sorte à actionner la première membrane lorsque la première bobine est parcourue par un courant électrique.
- un deuxième aimant ;
- une deuxième plaque de champ ;
- une deuxième bobine associée à la première membrane et située dans un entrefer compris entre la deuxième plaque de champ et le noyau de la culasse de sorte à actionner la deuxième membrane lorsque la deuxième bobine est parcourue par un courant électrique.
- une troisième membrane ;
- un troisième noyau ;
- des troisièmes moyens électromagnétiques pour actionner la troisième membrane ;
- les troisièmes moyens électromagnétiques étant montés sensiblement sur l'axe.
- une première membrane ; et
- des premiers moyens électromagnétiques pour actionner la première membrane ;
- une deuxième membrane ; et
- des deuxièmes moyens électromagnétiques pour actionner la deuxième membrane, les deuxièmes moyens électromagnétiques étant montés sensiblement sur l'axe.
- les figures 1 et 2 présentent des haut-parleurs connus en soi ;
- la figure 3 présente une coupe d'un haut-parleur à deux membranes conforme à l'invention selon un mode particulier de réalisation ;
- les figures 4 à 8 illustrent des variantes du haut-parleur illustré en regard de la figure 3 ;
- les figures 10 et 11 illustrent un haut-parleur à trois membranes et à deux aimants (un aimant étant commun aux graves et aux médiums), conforme à l'invention selon des modes particuliers de réalisation ; et
- les figures 12 et 13 présentent des variantes de circuits magnétiques mis en oeuvre dans le haut-parleur illustré en figure 3.
- un châssis 34 ;
- une culasse cylindrique 38 placé sur l'axe du haut-parleur 30;
- un premier ensemble de production sonore dans les fréquences médiums (par exemple 500 Hz à 5 kHz) ; et
- un second ensemble de production sonore dans les fréquences aiguës. Le premier ensemble de production sonore comprend :
- une membrane 313 d'un diamètre externe d'environ 8 cm (ce diamètre pouvant être beaucoup plus grand selon des variantes de réalisation de l'invention), associée de manière souple au châssis 34 par l'intermédiaire de suspensions centrale 36 et périphérique 315 ;
- une bobine 311 solidaire de la membrane 313 ; et
- un premier circuit magnétique situé sensiblement à l'intérieur de la cavité créée par la membrane 313 et qui comprend lui même :
- une plaque de champ 316 et un aimant 312 en terres rares (par exemple de type Néodyme-Fer-Bore (ou NdFeB)) associés de manière rigide au châssis 34 ; et
- la culasse 38 destinée, avec la plaque de champ 316, à fermer le flux magnétique créé l'aimant 312.
- une membrane 323 d'un diamètre externe d'environ 3 cm, associée de manière souple à un support périphérique 327 (relié lui-même de manière rigide à la culasse 38 par l'intermédiaire d'une suspension périphérique 325) ;
- un dôme en mousse 328 destiné à amortir les vibrations de la membrane 323 et donc à régulariser la courbe de réponse du haut parleur 30 dans les aigus ;
- une bobine 321 solidaire de la membrane 323 ; et
- un second circuit magnétique qui comprend lui même un noyau 329 et un aimant 322 en terres rares (par exemple de type Néodyme-Fer-Bore ou NdFeB) associés de manière rigide à la culasse 38.
- un châssis 44 (respectivement 54) ;
- un culasse cylindrique 48 (respectivement 58) placée sur l'axe du haut-parleur 40 (respectivement 50); et
- des premier et second ensembles de production comprenant des membranes 413 et 423 (respectivement 513 et 523), des aimants 412 et 422 (respectivement 512 et 522), des plaques de champ 416 et 429 (respectivement 516 et 529), et des bobines 411 et 421 (respectivement 511 et 521).
- un châssis 64 (respectivement 74 et 84) ;
- un noyau cylindrique 68 (respectivement 78 et 88) placé sur l'axe du haut-parleur 60 (respectivement 70 et 80); et
- des premier et second ensembles de production comprenant des membranes 613 (respectivement 713 et 813) et 623 (respectivement 723 et 823), des aimants 612 (respectivement 712 et 812) et 622 (respectivement 722 et 822) et des bobines 611 (respectivement 711 et 811) et 621 (respectivement 721 et 821).
- un faible diamètre ;
- une forte flèche ; et
- une grande rigidité du matériau.
- un châssis 94;
- une culasse cylindrique 98 placée sur l'axe 93 du haut-parleur 90 ;
- un premier ensemble de production sonore dans les fréquences graves (par exemple 100 Hz à 500 Hz), comprenant la membrane 913, un aimant 912, une plaque de champ 914 et une bobine 911 ;
- un deuxième ensemble de production sonore dans les fréquences médiums (par exemple 500 Hz à 5 KHz), comprenant la membrane 923, l'aimant 912, la plaque de champ 914 et une bobine 921 ; et
- un troisième ensemble de production sonore dans les fréquences aiguës (par exemple 5 KHz à 20 KHz), comprenant la membrane 933, un aimant 932, un noyau 934 et une bobine 931.
- soit d'un seul tenant imposant des circulations de flux identiques ;
- soit en deux parties avec une polarisation des aimants correspondant permettant une circulation des flux en sens opposé afin de réduire la hauteur de culasse et/ou les pertes magnétiques dans la culasse.
- domaine domestique, par exemple, haut-parleurs destinés aux enceintes de salon ou à des systèmes de type home-cinéma ;
- domaine des véhicules (par exemple automobiles, camions, avions, trains, bateaux, ...) notamment haut-parleurs insérés dans des sièges ou des tableaux de bord ou plus généralement dans un habitacle du conducteur et/ou des passagers ;
- domaine des équipements audio, vidéo et/ou multimédia, par exemple chaínes haute fidélité, appareil de production musicale, téléviseurs, ordinateurs, consoles de jeu ou informatiques, appareils de télécommunication (téléphones notamment),... ;
- et plus généralement domaine du son et/ou de l'image, par exemple équipements de studio, casques audio, équipements de salle de concert ou de conférence.
Claims (12)
- Haut-parleur (40) comprenant une culasse (48) et des premiers moyens de production sonore dans une première bande de fréquence comprenant eux-mêmes :une première membrane (413, 1013) ; etdes premiers moyens électromagnétiques (411, 412, 416) pour
caractérisé en ce que ladite première membrane (413, 1013) est convexe vue de l'extérieur dudit haut-parleur
et en ce que ledit haut-parleur comprend, en outre, des deuxièmes moyens de production sonore dans une deuxième bande de fréquence comprenant eux-mêmes :une deuxième membrane (423) ; etdes deuxièmes moyens électromagnétiques (421, 422, 426, 429) pour
actionner ladite deuxième membrane ; - Haut-parleur selon la revendication 1, caractérisé en ce que ladite deuxième membrane et lesdits deuxièmes moyens électromagnétiques sont positionnés sensiblement à l'intérieur de ladite cavité.
- Haut-parleur selon l'une quelconque des revendications 1 et 2, caractérisé en ce que lesdits premiers moyens électromagnétiques comprennentun premier aimant (412) ;une première plaque de champ (416) ;une première bobine (411) associée à ladite première membrane et située dans un entrefer compris entre ladite première plaque de champ et le noyau de ladite culasse de sorte à actionner ladite première membrane lorsque ladite première bobine est parcourue par un courant électrique.
- Haut-parleur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que des deuxièmes moyens électromagnétiques pour actionner ladite deuxième membrane comprennent :un deuxième aimant (422) ;une deuxième plaque de champ ;une deuxième bobine (421) associée à ladite première membrane et située dans un entrefer compris entre ladite deuxième plaque de champ et le noyau de ladite culasse de sorte à actionner ladite deuxième membrane lorsque ladite deuxième bobine est parcourue par un courant électrique.
- Haut-parleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ladite culasse (48) est accolée auxdits premier et deuxième aimants (412, 422) en présentant une aimantation de même polarisation (319, 3212) dans les zones de ladite culasse accolées auxdits premiers et deuxièmes moyens électromagnétiques.
- Haut-parleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ladite culasse est accolée auxdits premier et deuxième aimants (412, 423) en présentant une aimantation de polarisation opposée (319, 1222) dans les zones de ladite culasse accolées auxdits premiers et deuxièmes moyens électromagnétiques.
- Haut-parleur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que lesdits premiers et deuxièmes moyens de production sonore sont configurés de sorte que lesdites première et deuxième bandes de fréquence couvrent un spectre continu en présentant une réponse acoustique quasiment constante entre deux valeurs de fréquence extrêmes prédéterminées.
- Haut-parleur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que lesdits premiers moyens de production sonore sont configurés de sorte à ce que ladite première bande de fréquence corresponde à une bande médium couvrant au moins des fréquences de l'ordre de 500 à 3000 Hz.
- Haut-parleur selon l'une quelconque des revendications 1 à 8, caractérisé en ce que ledit haut-parleur comprend, en outre, au moins des troisièmes moyens de production sonore dans au moins une troisième bande de fréquence comprenant chacun eux-mêmes :une troisième membrane (1033) ;un troisième noyau (1034) ;des troisièmes moyens électromagnétiques (1032, 1031) pour actionner ladite troisième membrane ; lesdits troisièmes moyens électromagnétiques étant montés sensiblement sur ledit axe.
- Haut-parleur selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'au moins un desdits aimants est du type à terres-rares.
- Haut-parleur selon la revendication 10, caractérisé en ce qu'au moins un desdits aimants est du type au Neodyme-Fer-Bore.
- Enceinte acoustique, caractérisée en ce qu'elle comprend au moins un haut-parleur (40) selon l'une quelconque des revendications 1 à 11.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0310812 | 2003-09-15 | ||
FR0310812A FR2859864B1 (fr) | 2003-09-15 | 2003-09-15 | Haut-parleur et enceinte acoustique correspondante |
Publications (2)
Publication Number | Publication Date |
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EP1515584A1 true EP1515584A1 (fr) | 2005-03-16 |
EP1515584B1 EP1515584B1 (fr) | 2013-08-07 |
Family
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Application Number | Title | Priority Date | Filing Date |
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EP20040364058 Active EP1515584B1 (fr) | 2003-09-15 | 2004-09-07 | Haut-parleur et enceinte acoustique correspondante |
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EP (1) | EP1515584B1 (fr) |
FR (1) | FR2859864B1 (fr) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2895201A1 (fr) * | 2005-12-16 | 2007-06-22 | Cabasse Sa | Haut-parleur a n membranes coaxiales,n>3,montees sur un meme axe et enceinte acoustique correspondante. |
FR2895202A1 (fr) * | 2005-12-16 | 2007-06-22 | Cabasse Sa | Haut-parleur comprenant au moins une premiere membrane et une seconde membrane disposees de facon coaxiale et enceinte acoustique correspondante. |
FR2901448A1 (fr) * | 2006-05-19 | 2007-11-23 | Cabasse Sa | Dispositif et procede de filtrage d'un signal d'activation destine a alimenter un haut-parleur a membranes coaxiales, enceinte acoustique,programme informatique et moyen de stockage correspondants. |
EP2026595A1 (fr) * | 2007-08-14 | 2009-02-18 | Klaus Reck | Haut-parleur coaxial |
WO2009064833A1 (fr) * | 2007-11-14 | 2009-05-22 | Harman International Industries, Incorporated | Haut-parleur à aimants multiples |
JP2012124718A (ja) * | 2010-12-08 | 2012-06-28 | Alpine Electronics Inc | 複合スピーカ |
JP2012124719A (ja) * | 2010-12-08 | 2012-06-28 | Alpine Electronics Inc | 複合スピーカ |
US8989429B2 (en) | 2010-01-15 | 2015-03-24 | Phl Audio | Electrodynamic transducer having a dome and a buoyant hanging part |
US9042594B2 (en) | 2010-01-15 | 2015-05-26 | Phl Audio | Electrodynamic transducer having a dome and an inner hanging part |
US9084056B2 (en) | 2010-01-15 | 2015-07-14 | Phl Audio | Coaxial speaker system having a compression chamber with a horn |
WO2017080682A1 (fr) * | 2015-11-10 | 2017-05-18 | Norman Gerkinsmeyer | Haut-parleur coaxial à deux voies |
FR3049149A1 (fr) * | 2016-03-17 | 2017-09-22 | Cabasse | Haut-parleur et procede de fabrication de haut-parleur |
FR3052321A1 (fr) * | 2016-06-02 | 2017-12-08 | Peugeot Citroen Automobiles Sa | Vehicule automobile equipe d'un systeme audio integre et d'un boitier d'appel d'urgence |
FR3058021A1 (fr) * | 2016-10-25 | 2018-04-27 | Cabasse | Moteur de haut-parleur, haut-parleur et procede de centrage d'une membrane de haut-parleur |
CN108583392A (zh) * | 2018-05-22 | 2018-09-28 | 黄清山 | 一种具有扬声器的座椅头枕 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022253702A1 (fr) * | 2021-06-04 | 2022-12-08 | Pss Belgium Nv | Ensemble haut-parleur |
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FR2300477A1 (fr) * | 1975-02-10 | 1976-09-03 | Ard Anstalt | Haut-parleur |
DE3002843A1 (de) * | 1980-01-26 | 1981-07-30 | Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn | Doppel-ringspalt-magnetsystem fuer dynamische lautsprecher mit unterschiedlichen frequenzbereichen |
EP0122990A1 (fr) * | 1983-04-25 | 1984-10-31 | Tannoy Limited | Haut-parleurs à bobine mobile |
GB2261135A (en) * | 1991-11-02 | 1993-05-05 | Meir Mordechai | A loudspeaker |
US5802191A (en) * | 1995-01-06 | 1998-09-01 | Guenther; Godehard A. | Loudspeakers, systems, and components thereof |
JP2000078689A (ja) * | 1998-09-03 | 2000-03-14 | Sony Corp | 電気・音響変換装置 |
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2003
- 2003-09-15 FR FR0310812A patent/FR2859864B1/fr not_active Expired - Fee Related
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2004
- 2004-09-07 EP EP20040364058 patent/EP1515584B1/fr active Active
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FR2300477A1 (fr) * | 1975-02-10 | 1976-09-03 | Ard Anstalt | Haut-parleur |
DE3002843A1 (de) * | 1980-01-26 | 1981-07-30 | Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn | Doppel-ringspalt-magnetsystem fuer dynamische lautsprecher mit unterschiedlichen frequenzbereichen |
EP0122990A1 (fr) * | 1983-04-25 | 1984-10-31 | Tannoy Limited | Haut-parleurs à bobine mobile |
GB2261135A (en) * | 1991-11-02 | 1993-05-05 | Meir Mordechai | A loudspeaker |
US5802191A (en) * | 1995-01-06 | 1998-09-01 | Guenther; Godehard A. | Loudspeakers, systems, and components thereof |
JP2000078689A (ja) * | 1998-09-03 | 2000-03-14 | Sony Corp | 電気・音響変換装置 |
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Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2895202A1 (fr) * | 2005-12-16 | 2007-06-22 | Cabasse Sa | Haut-parleur comprenant au moins une premiere membrane et une seconde membrane disposees de facon coaxiale et enceinte acoustique correspondante. |
FR2895201A1 (fr) * | 2005-12-16 | 2007-06-22 | Cabasse Sa | Haut-parleur a n membranes coaxiales,n>3,montees sur un meme axe et enceinte acoustique correspondante. |
FR2901448A1 (fr) * | 2006-05-19 | 2007-11-23 | Cabasse Sa | Dispositif et procede de filtrage d'un signal d'activation destine a alimenter un haut-parleur a membranes coaxiales, enceinte acoustique,programme informatique et moyen de stockage correspondants. |
CN101370321B (zh) * | 2007-08-14 | 2012-07-18 | 克罗斯·瑞克 | 同轴扬声器 |
EP2026595A1 (fr) * | 2007-08-14 | 2009-02-18 | Klaus Reck | Haut-parleur coaxial |
US8284983B2 (en) | 2007-08-14 | 2012-10-09 | Klaus Reck | Coaxial loudspeaker |
CN101911720A (zh) * | 2007-11-14 | 2010-12-08 | 哈曼国际工业有限公司 | 多磁体扬声器 |
CN106878884A (zh) * | 2007-11-14 | 2017-06-20 | 哈曼国际工业有限公司 | 多磁体扬声器 |
WO2009064833A1 (fr) * | 2007-11-14 | 2009-05-22 | Harman International Industries, Incorporated | Haut-parleur à aimants multiples |
US8135162B2 (en) | 2007-11-14 | 2012-03-13 | Harman International Industries, Incorporated | Multiple magnet loudspeaker |
US8989429B2 (en) | 2010-01-15 | 2015-03-24 | Phl Audio | Electrodynamic transducer having a dome and a buoyant hanging part |
US9042594B2 (en) | 2010-01-15 | 2015-05-26 | Phl Audio | Electrodynamic transducer having a dome and an inner hanging part |
US9084056B2 (en) | 2010-01-15 | 2015-07-14 | Phl Audio | Coaxial speaker system having a compression chamber with a horn |
US9232301B2 (en) | 2010-01-15 | 2016-01-05 | Phl Audio | Coaxial speaker system having a compression chamber |
JP2012124719A (ja) * | 2010-12-08 | 2012-06-28 | Alpine Electronics Inc | 複合スピーカ |
JP2012124718A (ja) * | 2010-12-08 | 2012-06-28 | Alpine Electronics Inc | 複合スピーカ |
WO2017080682A1 (fr) * | 2015-11-10 | 2017-05-18 | Norman Gerkinsmeyer | Haut-parleur coaxial à deux voies |
FR3049149A1 (fr) * | 2016-03-17 | 2017-09-22 | Cabasse | Haut-parleur et procede de fabrication de haut-parleur |
FR3052321A1 (fr) * | 2016-06-02 | 2017-12-08 | Peugeot Citroen Automobiles Sa | Vehicule automobile equipe d'un systeme audio integre et d'un boitier d'appel d'urgence |
FR3058021A1 (fr) * | 2016-10-25 | 2018-04-27 | Cabasse | Moteur de haut-parleur, haut-parleur et procede de centrage d'une membrane de haut-parleur |
CN108583392A (zh) * | 2018-05-22 | 2018-09-28 | 黄清山 | 一种具有扬声器的座椅头枕 |
Also Published As
Publication number | Publication date |
---|---|
EP1515584B1 (fr) | 2013-08-07 |
FR2859864A1 (fr) | 2005-03-18 |
FR2859864B1 (fr) | 2005-12-30 |
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