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EP2180721A1 - Haut-parleur à membrane plate - Google Patents

Haut-parleur à membrane plate Download PDF

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Publication number
EP2180721A1
EP2180721A1 EP08075841A EP08075841A EP2180721A1 EP 2180721 A1 EP2180721 A1 EP 2180721A1 EP 08075841 A EP08075841 A EP 08075841A EP 08075841 A EP08075841 A EP 08075841A EP 2180721 A1 EP2180721 A1 EP 2180721A1
Authority
EP
European Patent Office
Prior art keywords
membrane
magnet
loudspeaker system
loudspeaker
suspension
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Withdrawn
Application number
EP08075841A
Other languages
German (de)
English (en)
Inventor
Sascha Reckert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAUTSPRECHER TEUFEL GmbH
Original Assignee
LAUTSPRECHER TEUFEL GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LAUTSPRECHER TEUFEL GmbH filed Critical LAUTSPRECHER TEUFEL GmbH
Priority to EP08075841A priority Critical patent/EP2180721A1/fr
Priority to PCT/EP2009/007635 priority patent/WO2010046132A1/fr
Priority to EP09752105A priority patent/EP2213106B1/fr
Priority to US13/125,140 priority patent/US8891810B2/en
Priority to CN200980141770.5A priority patent/CN102187688A/zh
Priority to RU2011106827/28A priority patent/RU2523094C2/ru
Publication of EP2180721A1 publication Critical patent/EP2180721A1/fr
Withdrawn legal-status Critical Current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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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
    • H04R2231/00—Details of apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor covered by H04R31/00, not provided for in its subgroups
    • H04R2231/003—Manufacturing aspects of the outer suspension of loudspeaker or microphone diaphragms or of their connecting aspects to said diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Definitions

  • the invention relates to a loudspeaker system in which the membrane of the loudspeaker has a defined material thickness, in particular in its edge region, and the suspension of this membrane takes place substantially symmetrically and the rearward sound radiation is realized to at least 50% through the interior of a magnet system.
  • the invention furthermore relates to the use of the loudspeaker system as loudspeaker boxes or else to radios, televisions, radio receivers, hand-held radio sets, exhibition receivers, mobile telephones and / or headphones or the like.
  • a speaker is in the narrower sense a device by which low-frequency electrical signals are converted into sound.
  • speakers are sometimes subsumed under the term sound transducer or speaker.
  • Sound generally refers to sounds, sounds, sounds or other types of sounds that can be audibly perceived by humans or animals. Since loudspeakers are used in all areas of life, such as in the cinema, in televisions, but especially in headphones or hand-held radios, loudspeakers exist in various sizes and designs and, above all, in very different qualities. For the size of the speakers, in particular for the size of the loudspeaker membrane, the higher the sound to be generated, the smaller the dimensions, with which numerous other problems are connected.
  • Speakers are also referred to in the art as chassis or drivers, although these terms refer to only certain device elements of a speaker system, such as the so-called basket or membrane drive.
  • the predominant design of the loudspeakers is the electrodynamic loudspeaker with central drive.
  • the membrane is driven by the interaction between electric current and a DC magnetic field.
  • a current-carrying coil is located in the magnetic DC field of the magnet.
  • the known electrodynamic loudspeaker has a central voice coil, but forms with decentralized drives have also been described.
  • Dynamic loudspeakers or dynamic cone loudspeakers are designed so that a thin, funnel-shaped membrane is elastically suspended on the outer edge of the membrane and indirectly via the mechanical connection with a voice coil bobbin. Due to the different diameters, materials and shapes of the suspensions arise different compliances, depending on the direction of movement and stroke.
  • some loudspeaker chassis instead of the funnel-shaped membrane, there are also dome-shaped or flat membranes which, however, have the same properties with respect to the restraints in the prior art. In all these membranes, the aim is to achieve the maximum material thickness in the region of the voice coil and in the edge region the smallest possible membrane thickness.
  • FIG. 1 Another characteristic feature of conventional loudspeaker chassis is the rearward sound radiation of the loudspeaker diaphragm, with the sound typically being passed largely outside the magnet system (illustrated in FIG. 1 ). This is particularly problematic when a chassis with a large voice coil and / or large magnet is required. In this case, harmful reflections and sound refractions occur at the magnet system ( FIGS. 1 . 2 ). In addition, the sound emitted by the dust cap in the direction of the pole core does not spread optimally due to the narrow pole core bore and / or the ventilation holes in the membranes and voice coil carriers. This results in non-linear mechanical losses and in larger membrane deflection noise.
  • the openings in the basket are very short, so installation in a baffle almost closes them (see Figures 3 . 4 ).
  • the baffle opening is beveled on the inside; because of the resulting sound channel with the interfering edges but can not be avoided that the frequency response of the chassis is significantly deformed by the installation.
  • the object of the invention was therefore to provide a loudspeaker system which does not have the disadvantages of the prior art and in particular has good performance parameters.
  • a loudspeaker system comprising at least one diaphragm, a suspension of this, a magnet system and a voice coil, the suspension of the diaphragm being substantially symmetrical in the form of two suspensions.
  • the term "substantially” in the context of the invention is not a relative and thus unclear term.
  • the effects achieved by the invention would not be abruptly then not feasible if the suspension of the membrane is not completely symmetrical.
  • the concept of fully symmetrical suspension represents a theoretically possible, but practically unrealizable suspension, as well as a suspension that deviates from the idealized theoretical symmetrical suspension by a very small amount, can also be used to solve the problem of the invention.
  • substantially makes it clear that a substantially symmetrical suspension that performs the same function in the same way and with the same result is also covered by the symmetrical suspension teaching according to the invention.
  • the person skilled in the art of acoustics recognizes what is meant by the term symmetrical suspension in the form of two suspensions for a membrane in the sense of the invention and knows to what extent it is practically realized from the theoretical, completely symmetrical form in the practical one may deviate symmetrical suspension to achieve the object of the invention.
  • an electrodynamic loudspeaker chassis which is either a one-piece symmetrical ( Fig. 2 (7) ) or a mirror-image constructed of at least two parts, compliant membrane suspension has (see FIGS. 1 . 2 ).
  • compliant membrane suspension has (see FIGS. 1 . 2 ).
  • the compliant suspension is advantageous if it is perfectly symmetrical.
  • the term of perfectly symmetrical suspension is known to one of ordinary skill in speaker technology or acoustics; He knows what is to be understood in the field of his art as a perfectly symmetrical suspension.
  • the membrane which is fixed symmetrically in the form of two suspensions, at the outer diameter of the membrane (outer diameter) has at least such a thickness as in the region of the center of the membrane, wherein the membrane thickness or the membrane thickness in the edge area, d. H. in the outer diameter of the membrane, more than 10% of the membrane diameter is. That is, if the membrane diameter is, for example, 10 cm, the membrane thickness is more than 1 cm at the outer diameter of the membrane. In this case, for example, the membrane thickness in the region of the center of the membrane could have half a centimeter.
  • a loudspeaker system which has as a technical feature only a membrane which has a thickness of more than 10% of the membrane diameter at the outer diameter, has surprisingly advantageous properties in the reproduction of auditory perceptible signals. It was completely surprising that the vibration characteristics of the membrane are improved by this type of embodiment according to the invention.
  • the larger edge thickness of the membrane than the prior art permits a symmetrical suspension of these in the form of two mirrored, substantially identical suspensions.
  • the combination of the technical features of the suspension according to the invention with those of the membrane thickness on the outer diameter of the membrane leads to a particularly improved loudspeaker.
  • An at least in the edge region very thick membrane advantageously allows a particularly low-noise suspension, in particular a symmetrical suspension (see also FIGS. 1 . 5 ).
  • the loudspeaker system according to the invention or the loudspeaker according to the invention can be additionally improved in a further particularly preferred embodiment, if the rearward sound radiation occurs at least 50% through the interior of the magnet system.
  • This can be realized, for example, in that the voice coil is very large in relation to the membrane diameter compared to the previous dimensions of known devices, so that the rearward sound radiation can take place through the interior of the magnet system (see also FIGS. 1 to 4 ).
  • a characteristic of the voice coil is its inductance. To increase the inductance, an electrical conductor such as a coil wire with a certain number of turns is applied to the bobbin.
  • a voice coil according to the invention represents the drive unit for the speaker. It consists of a thin wire which is wound on a voice coil former. The voice coil dips into the air gap of the permanent magnet or electromagnet, in which there is a magnetic field. The bobbin is connected to the membrane unit of the speaker. The magnetic alternating field, which builds up due to current flow, moves the voice coil with the diaphragm forwards and backwards and thus makes it possible to transduce the voltage vibrations and air vibrations.
  • the very large voice coil realizes an outboard magnet system which may consist of individual magnet segments, for example sub-segments of a ring, round magnetic disks or other arbitrary shapes or a closed ring, to ensure that the rearward sound radiation can be through the center of the magnet design ,
  • a very large, circular voice coil preferably means one which reaches into the region of the edge of the membrane, for example in that the voice coil diameter is at least 75%, preferably 80%, particularly preferably 90%, in particular 100% of the membrane diameter.
  • the diameter of the membrane and voice coil is the same size in a preferred embodiment; However, it may be provided in other preferred variants of the invention that the diameter of the voice coil is smaller than that of the membrane.
  • the suspension of the membrane takes place in the form of two mirrored and identical suspensions. It is particularly preferred if the loudspeaker system according to the invention realizes all features such as the membrane thickness in the outer edge region, the suspension of the membrane symmetrically in the form of two mirrored and identical suspensions and the rearward sound radiation mainly through the interior of the magnet in combination. Of course, it may also be preferred if in the loudspeaker system according to the invention two of the features according to the invention such as the feature of the membrane thickness in the outer edge region and the suspension of the membrane according to the invention are implemented.
  • a further advantageous embodiment is the combination of the technical features of the membrane thickness according to the invention on the outer diameter of the membrane and the rearward sound radiation mainly through the interior of the magnet.
  • a further preferred embodiment results from the implementation of the technical features of the membrane suspension in the form of two mirrored and identical suspensions, combined with a membrane having the membrane edge thickness according to the invention.
  • the edge thickness according to the invention is a thickness of a membrane at the outer diameter of this, if it is more than 10% of the membrane diameter.
  • the diameter of the voice coil in relation to the diameter of the membrane is 1: 1, preferably 0.9: 1, particularly preferably 0.75: 1.
  • the diameter of the voice coil is at least 75%, preferably 80%, more preferably at least 85% or 100% of the diameter of the loudspeaker diaphragm.
  • the membrane preferably a woofer membrane
  • a tweeter preferably a dome tweeter.
  • a Kalottenhochtöner is a dynamic speaker, preferably for frequencies above about 2 to 3 kHz, the membrane is designed in particular as a spherical cap (dome-shaped).
  • the tweeter preferably has a larger radiation angle at high frequencies than conventional speakers.
  • the tweeter is preferably an independent system, which is placed in the area of the woofer membrane, but without interacting significantly or directly with it.
  • the tweeter can be placed centrally or centrally, but also at any other location of the woofer membrane, decentralized or near the center. In a preferred embodiment, the tweeter is located in the center of the woofer on an axis.
  • the tweeter inside the magnet system radiates the sound through an opening in the membrane of the woofer. Due to the preferred dimensioning of the magnet system, in particular, a tweeter, which is arranged centrally in the woofer membrane, is located within the magnet system.
  • the tweeter may be, for example, a product, as in the DE 20 2004 015 635 U1 is described.
  • the loudspeaker system according to the invention additionally comprises a tweeter
  • this combined loudspeaker system has an outer and an inner bead or an outer and an inner bead edge or ring.
  • the terms of the inner or outer bead or the inner or outer bead edge or ring are self-explanatory for the expert. If a tweeter is placed in a woofer, is on the one hand, an outer edge of the woofer membrane and on the other hand, an outer edge of the tweeter membrane, the latter is at least partially surrounded by the woofer membrane.
  • the outer bead would serve to center or position the diaphragm for the low and midtones, respectively.
  • the so-called inner ring refers to the area of the outer edge of the tweeter, which is surrounded by the diaphragm for the low and midrange.
  • the area or gap between the woofer or midrange diaphragm and the tweeter may preferably be sealed by materials known to those skilled in the art, that the diaphragm movement of the speakers for the low and midrange is not restricted and that membrane resonances are damped.
  • an elastic, porous or closed-cell foam which is preferably permanently elastic.
  • this centering takes place in that the membrane is positioned within the chassis by foams.
  • the membrane may be positioned with a fabric such as acrylic, nomex and / or cotton fabric in combination with phenolic and / or epoxy resin or through a rubber construction in the form of a bead for the low or mid-tone region. is centered.
  • foam as an inner bead and to seal the air gap between low or midrange and tweeter is particularly preferred in the above combination of membrane and tweeter, especially if the basic construction for the low and midrange as a flat surface, then the forms the immediate vicinity of the tweeter. It was completely surprising that the use of foam as inner beading the construction of a Coax loudspeaker allows, which compared to the known devices has improved sound quality.
  • the magnet system comprises at least one magnet preferably from the group comprising a samarium cobalt magnet, a cerium-cobalt magnet, an aluminum-nickel-cobalt magnet, a ferrite magnet and / or preferably a neodymium magnet.
  • the loudspeaker system according to the invention preferably has a membrane, which is designed in particular as a sandwich membrane, which can be formed stiff by the combination of core material and cover layers.
  • the core material preferably has a honeycomb structure and can be formed, for example, from aramid fibers, paper, polyester, polypropylene or aluminum.
  • the cover layers of the membrane may comprise fiber materials, metal foils and / or plastic films.
  • the cover layers of the membrane may comprise fiber materials, metal foils and / or plastic films.
  • the Faserwerkstofefn may be, for example, paper or cotton.
  • the fabric When using fabrics of carbon, glass or aramid fibers, the fabric must have a matrix-like structure on at least one side, which can be produced, for example, from thermoplastics or thermosets. It is preferred if the membrane comprises at least two-part, interconnected injection-molded films or films. Of course, the membrane may also be formed in one piece.
  • the fiber materials may be fiber-plastic composites consisting of reinforcing fibers and a plastic matrix.
  • the matrix surrounds the fibers which are bonded to the matrix by adhesive or cohesive forces.
  • the fiber-plastic composite can be construed as a construction. Its elements must be combined in such a way that the desired properties develop. The interplay of the specific properties of fiber material and matrix material produces the desired starting materials for membrane coating or membrane reinforcement. Fibers are embedded in the matrix, ie the fibers become spatial fixed, which allows a load input and output. In addition, the matrix supports the fibers. The load is transferred by the adhesion between fiber, matrix and core.
  • the fibers may be, for example, aramid, carbon, polyester, nylon, polyethylene, ceramic, glass, drilling, flax, hemp and / or other fibers.
  • the advantageous embodiments of the invention have at least one or more of the advantages mentioned.
  • FIG. 1 shows an electrodynamic loudspeaker chassis, the peculiarity of the mirror image of two parts constructed resilient membrane suspension (3, 4) and in relation to the membrane diameter very large voice coil (1, 6, 7) with simultaneous rearward sound radiation mainly through the interior of the magnet system (11 ).
  • a membrane (1) which is very thick in the edge region is necessary.
  • the membrane which is very thick at least in the edge region of the example, enables a low-symmetry suspension (1).
  • a perfectly symmetrical suspension around the mechanical rest position in the form of two mirrored, identical suspensions allows the construction of an advantageous loudspeaker system.
  • a very large in relation to the diaphragm diameter voice coil (6, 7) to reduce the dynamic compression by voice coil heating improves the exemplary speaker system in addition.
  • the external magnet system (12) consists of individual magnet segments or a closed ring to ensure a main sound radiation through the center of the magnet design with very low air compression.
  • the tweeter is in a flat surface without disturbing horn extension in the form of a conical membrane.
  • this flat surface can be optimized if, instead of the corrugated fabric bead or a rubber bead, a straight foam ring is used to suspend the membrane (4).
  • the tweeter (5) of any type emits its sound through an opening in the woofer cone. The tweeter (5) is within the magnet system of the speaker.
  • the exemplary combination with the tweeter results - in addition to the advantages of the basic construction - for the low / midrange the great advantage of a flat surface in the immediate vicinity of the tweeter, especially when using foam as beading / centering.
  • the use of a foam with a flat surface shape as a loudspeaker bead (2, 4, 6, 7) for coaxial loudspeakers with a flat or only slightly curved membrane surface is particularly advantageous.
  • Prerequisite for the meaningful acoustic function into the midrange is the use of modern lightweight materials for the membrane.
  • the Figures 3 and 4 show a characteristic feature of conventional loudspeaker chassis with their rearward sound radiation of the loudspeaker diaphragm, wherein the sound is typically passed largely to the magnet system. This is particularly problematic when a chassis with a large voice coil and / or large magnet is needed. In this case, harmful reflections and sound refractions occur at the magnet system.
  • the FIG. 4 shows the problem with very small speakers. The close proximity to housing walls in the known chassis to strong reflections from the inside of the walls back, thrown through the membrane to the outside and thus acoustically disturbing effect. A damping at this point is not effectively possible because of lack of space.
  • FIG. 5 shows two-piece, glued together injection molds / foils or one-piece foam membranes.
  • loudspeaker membranes which are also used in the mid-range, the requirement for the lowest possible weight and resonance phenomena that are as far outside the desired transmission range applies.
  • sandwich membrane which consists of a light but stiff core material is recommended -.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
EP08075841A 2008-10-21 2008-10-21 Haut-parleur à membrane plate Withdrawn EP2180721A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08075841A EP2180721A1 (fr) 2008-10-21 2008-10-21 Haut-parleur à membrane plate
PCT/EP2009/007635 WO2010046132A1 (fr) 2008-10-21 2009-10-21 Haut-parleur à membrane plate
EP09752105A EP2213106B1 (fr) 2008-10-21 2009-10-21 Haut-parleur à membrane plate
US13/125,140 US8891810B2 (en) 2008-10-21 2009-10-21 Flat diaphragm loudspeaker
CN200980141770.5A CN102187688A (zh) 2008-10-21 2009-10-21 平膜片低频扬声器
RU2011106827/28A RU2523094C2 (ru) 2008-10-21 2009-10-21 Низкочастотный громкоговоритель с плоским диффузором и его применение

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08075841A EP2180721A1 (fr) 2008-10-21 2008-10-21 Haut-parleur à membrane plate

Publications (1)

Publication Number Publication Date
EP2180721A1 true EP2180721A1 (fr) 2010-04-28

Family

ID=40414094

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08075841A Withdrawn EP2180721A1 (fr) 2008-10-21 2008-10-21 Haut-parleur à membrane plate
EP09752105A Not-in-force EP2213106B1 (fr) 2008-10-21 2009-10-21 Haut-parleur à membrane plate

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09752105A Not-in-force EP2213106B1 (fr) 2008-10-21 2009-10-21 Haut-parleur à membrane plate

Country Status (5)

Country Link
US (1) US8891810B2 (fr)
EP (2) EP2180721A1 (fr)
CN (1) CN102187688A (fr)
RU (1) RU2523094C2 (fr)
WO (1) WO2010046132A1 (fr)

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EP2472906A1 (fr) * 2011-01-04 2012-07-04 Samsung Electronics Co., Ltd. Haut-parleur de type mince et son procédé d'assemblage
WO2013127096A1 (fr) * 2012-02-28 2013-09-06 Sung Waileung Diaphragme vibrant de haut-parleur pliant
CN113423046A (zh) * 2021-06-09 2021-09-21 歌尔股份有限公司 扬声器用振膜、扬声器用振膜制备方法及发声装置

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CN101990142B (zh) * 2009-08-05 2013-12-11 清华大学 音圈引线及采用该音圈引线的扬声器
US9973856B2 (en) * 2011-05-19 2018-05-15 Xinmin Huang Ultrathin electromagnetic vibration device and its manufacturing method
CN102186133A (zh) * 2011-06-04 2011-09-14 吉林省神韵电子科技开发有限公司 超薄平板扬声器
US8724843B2 (en) * 2011-08-09 2014-05-13 Mitsubishi Electric Corporation Electrodynamic sound-emitting device
GB2500718A (en) * 2012-03-30 2013-10-02 Paul Raymond Knight Edge- or circumferentially driven planar loudspeaker with Neodymium magnet system
US9124967B2 (en) * 2012-09-26 2015-09-01 Terrance Marshall Morton Microphone systems for base drums and other instruments
US9838793B2 (en) * 2013-06-14 2017-12-05 Genelec Oy Suspension element for suspending the diaphragm of a loudspeaker driver to the chassis thereof as well as driver and loudspeaker comprising the same
DE102014101075B3 (de) * 2014-01-29 2015-03-12 Heraeus Materials Technology Gmbh & Co. Kg Verfahren zur Herstellung einer Lautsprechermembran
EP3166334B1 (fr) 2014-07-04 2019-04-03 Panasonic Intellectual Property Management Co., Ltd. Haut-parleur, et dispositif mobile le comprenant
EP3193516B1 (fr) * 2014-09-10 2018-04-18 Panasonic Intellectual Property Management Co., Ltd. Haut-parleur et dispositif de corps mobile sur lequel est monté le haut-parleur
CN204929240U (zh) * 2015-08-10 2015-12-30 常州美欧电子有限公司 扬声器
CN204929239U (zh) * 2015-08-10 2015-12-30 常州美欧电子有限公司 扬声器
CA2997902A1 (fr) * 2015-09-14 2017-03-23 Wing Acoustics Limited Ameliorations apportees a des transducteurs audio
US9980050B2 (en) * 2015-09-29 2018-05-22 Coleridge Design Associates Llc System and method for a loudspeaker with a diaphragm
GB2549955A (en) 2016-05-03 2017-11-08 4A Mfg Gmbh Membrane plate structure for generating sound waves
US10034093B2 (en) * 2016-08-22 2018-07-24 4A Manufacturing Gmbh Temperature stable membrane plate structure for a loudspeaker
US10028060B2 (en) * 2016-08-22 2018-07-17 4A Manufacturing Gmbh Temperature stable membrane plate structure for a loudspeaker
US11166100B2 (en) 2017-03-15 2021-11-02 Wing Acoustics Limited Bass optimization for audio systems and devices
WO2018172944A1 (fr) 2017-03-22 2018-09-27 Wing Acoustics Limited Systèmes, procédés et dispositifs se rapportant à des charnières et à des transducteurs audio
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WO2021000117A1 (fr) * 2019-06-29 2021-01-07 瑞声声学科技(深圳)有限公司 Haut-parleur
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US8891810B2 (en) 2014-11-18
EP2213106A1 (fr) 2010-08-04
EP2213106B1 (fr) 2012-08-15
CN102187688A (zh) 2011-09-14
RU2011106827A (ru) 2012-08-27
WO2010046132A1 (fr) 2010-04-29
US20110299716A1 (en) 2011-12-08

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