EP2163120B1 - Dynamic sound transducer, and receiver - Google Patents

Dynamic sound transducer, and receiver Download PDF

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Publication number
EP2163120B1
EP2163120B1 EP08715665.9A EP08715665A EP2163120B1 EP 2163120 B1 EP2163120 B1 EP 2163120B1 EP 08715665 A EP08715665 A EP 08715665A EP 2163120 B1 EP2163120 B1 EP 2163120B1
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EP
European Patent Office
Prior art keywords
membrane
dynamic
coil
chassis
transducer
Prior art date
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Application number
EP08715665.9A
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German (de)
French (fr)
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EP2163120A2 (en
Inventor
Till Teske-Fischer
Markus Kuhr
Vladimir Gorelik
Dirk Hackbarth
Heinz Epping
Burkhard Markmann
Axel Grell
André Michaelis
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Sennheiser Electronic GmbH and Co KG
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Sennheiser Electronic GmbH and Co KG
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Publication of EP2163120A2 publication Critical patent/EP2163120A2/en
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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
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
    • 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
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • 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
    • H04R2307/027—Diaphragms comprising metallic materials

Definitions

  • the present invention relates to a dynamic sound transducer and a listener.
  • a voice coil is provided in the region of the diaphragm bead, with coil wires being used to contact the voice coil.
  • the coil wires thus connect the diaphragm edge and the voice coil.
  • the provision of such coil wires in the production of dynamic transducers manufacturing technology very complex and can lead to rejects of the sound transducer, for example, when clutter or coil wire tears are present. Since the coil wires are typically laid on only one side of the membrane, an asymmetric mechanical force can be exerted on the voice coil, so that an undesirable tumbling of the membrane may be present.
  • US 2004/0141629 A1 shows a dynamic transducer with a membrane, wherein a voice coil is arranged in the region of the diaphragm bead. At the edge of the membrane two electrodes are provided, which are connected to the voice coil. The connecting portions between the electrodes and the voice coil are coated with an electrically conductive polymer layer.
  • US 6,320,970 B1 shows a dynamic transducer with a membrane system, which has a membrane with a bead and an inner and outer membrane pad. Furthermore, the dynamic sound transducer has a voice coil.
  • US-A1-2005 / 0238197 discloses a dynamic transducer whose membrane system has first and second beads with inner and outer membrane pads.
  • GB-A-2347044 shows a transducer whose membrane consists of a first and second bead. In one embodiment, at least one of the edges of the membrane is bonded to a soft material and secured thereto above the chassis.
  • Dynamic transducers also typically include a diaphragm having a crimp and a dome.
  • the upper limit frequency of such a dynamic sound transducer depends on the size of the surface which emits sound. The larger the sound-radiating surface, the lower the upper limit frequency of the frequency response. If the sound emitting area is increased, an audio signal having a reduced distortion can be reproduced.
  • a dynamic transducer is provided with a membrane system having a membrane with a hole in the center, first and second beads, and inner and outer membrane pads. Furthermore, the sound transducer has a voice coil, which is arranged on a coil seat in the region between the first and second bead.
  • the membrane of the membrane system is disposed in a chassis and the second bead is secured to the inside of the chassis via the inner membrane pad and the first bead is attached to the exterior of the chassis via the outer membrane pad.
  • the membrane is designed stiff in the coil seats and is made softer towards the inner and outer membrane pad.
  • the present invention also relates to a sound transducer having a diaphragm system having first and second beads and a voice coil disposed in the region between the first and second beads.
  • the invention relates to the idea of providing a dynamic sound transducer with a membrane which is (half-sidedly) coated with a conductive coating.
  • the center of the membrane can have an insulating strip, which has no conductive coating.
  • the surface of the conductive coating can be divided into two mutually insulated sections.
  • the coil wires of the coil can be cut short and be attached or glued in an immediate proximity to the coil electrically conductive to the membrane, so that an electrical connection with the membrane edge on the conductive layer of the membrane is provided.
  • the chassis of the dynamic transducer may have two conductive lines, with the membrane having the conductive coating glued to the chassis so that the conductive coating of the membrane has a conductive contact with the chassis.
  • Fig. 1a shows a plan view of a diaphragm system of a dynamic sound transducer.
  • the membrane 10 is connected to a voice coil 20 and embedded in a chassis 30.
  • the membrane 10 has on its one side two metallized surfaces 11 and an insulating, ie not electrically coated portion 12 between the two metallized surfaces 11.
  • the coil wires 25 of the voice coil 20 are respectively adhesively bonded to one of the metallized surfaces 11 or conductively connected to the metallized surfaces 11.
  • two contact elements 15 are provided, which are conductively connected to the two metallized surfaces 11, for example, by gluing.
  • the two electrical contact elements serve to couple the voice coil via the electrically conductive surfaces with an electrical circuit G, which serves, for example, to apply a signal to the voice coil.
  • Fig. 1b shows a sectional view of the membrane system of Fig. 1a ,
  • the diaphragm 10 is disposed in the chassis 30 and has a voice coil 20 with a coil wire 25.
  • One side of the membrane preferably the underside, is coated with an electrically conductive layer 11 in a sputtering process, for example.
  • an electrically conductive layer 11 may be formed, for example, by sputtering Al (a few angstroms) and sputtering AU (about 2000 angstroms).
  • sputtering Al a few angstroms
  • sputtering AU about 2000 angstroms
  • the connecting wires 25 of a voice coil 20 are then bent inward, the insulation of the connecting wires of the voice coil are thermally stripped in the vicinity of the coil (at about 380 °) and shortened.
  • the coils 25 may then be placed and secured to the membranes 10 in a conventional manner.
  • the two stripped and shortened connecting wires 25 of the voice coil 20 are electrically conductively connected or glued to one another with the two contact surfaces 11 of the electrically conductive layer.
  • the chassis 30 of the dynamic transducer has at the membrane seat two wires 15 which are connected to a printed circuit board in the dynamic transducer.
  • the membranes 10 are inserted into the chassis 30, and the wires are contacted accordingly.
  • the membrane can be glued or attached to the chassis.
  • a dynamic sound transducer having a nominal resistance which is slightly larger than the nominal resistance of the coil can be obtained.
  • the contact has only a contact resistance of a few ohms.
  • the insulating section 12 may preferably be designed smaller than the first and second electrically conductive surface 11. This allows easy and locally flexible contacting of the wires 15 since one of the wires 15 can be connected to the first conductive surface at any location, preferably near the outer edge. The other wire is connected to the second conductive surface accordingly.
  • one side of the membrane is provided with a central strip-shaped insulation section 12 and the remaining approximately semicircular surfaces of one side of the membrane are coated with the first and second electrically conductive surfaces. By a very large first and second electrically conductive surface and a low electrical resistance between the wires 15 and the leads 25 can be achieved.
  • Such a dynamic sound transducer may preferably be used in a headphone, a handset or a headset.
  • Fig. 2a shows a sectional view of a dynamic transducer according to the invention.
  • the dynamic sound transducer has a chassis 130, a membrane 110 with two beads 110 a, 110 b, a voice coil 120 and a magnet system 140.
  • Fig. 2b shows a perspective schematic view of a dynamic transducer according to Fig. 2a ,
  • the dynamic transducer has two beads, but no dome, ie in the middle of the membrane, a hole 150 is provided.
  • Fig. 2c shows a further perspective view of a dynamic transducer of Fig. 2a , In particular, the corresponding membrane system is shown here.
  • the membrane system has an outer membrane pad 111 and an inner membrane pad 112 and a passage or hole 150. Between the outer membrane support 111 and the coil seat 122 is a first bead 110a and between the coil seat 122 and the inner membrane pad 112, a second bead 110b is provided.
  • the invention thus relates to the idea of reducing or avoiding occurring distortions by increasing the membrane area, wherein an upper limit frequency is maintained. Furthermore, a dynamic sound transducer is provided, which has a reduced resonance frequency, so that such a sound transducer can be used as a broadband converter. To reduce the vibration modes, a higher circumference is provided relative to the calotte converter.
  • the invention thus relates to the idea to provide a dynamic transducer with two beads 110a, 110b, but without dome. The two beads 110a, 110b are fastened inside and outside on the chassis 130 of the dynamic transducer.
  • a coil 120 for driving the membrane is provided at the center 122 between the outer and inner beads 110a, 110b.
  • the membrane 110 In the region of the membrane where the coil is arranged, ie on the coil seat 122, the membrane 110 is made rigid, which can be achieved by a corresponding contour of the membrane. The membrane is further softened toward the edge regions, ie the membrane supports 111, 112. Due to the fact that the membrane does not have a uniform rigidity, the size of the sound-radiating surface depends on the frequency. At low frequencies, a large part of the beads 110a, 110b vibrates homogeneously with the coil 120 and thus represents a large sound radiating surface. However, when the frequency is increased, only a near portion of the coil seat 122 vibrates, so that the sound radiating surface is reduced. Thus, high frequency components can be emitted accordingly.
  • the upper limit frequency of the dynamic sound transducer is set outside the listening area. As the active sound radiating surface of the dynamic transducer is increased, lower strokes are allowed to produce the sound signals, which can reduce distortion.
  • the dynamic transducer has a Ringradiator with a vapor-deposited foil (Duofol) in order to reduce the resonance frequency.
  • a broadband converter can be provided, which can be used for example in an open headphone.
  • the membrane of the dynamic transducer can be steamed. Due to the enlarged circumference of the membrane, vibration modes can propagate more poorly. Thus, a uniform amplitude and frequency response can be obtained.
  • Fig. 3a shows a perspective view of a magnetic ring for a dynamic transducer.
  • the magnetic ring 240 according to Fig. 3a For example, in the dynamic transducer according to Fig. 2a or in the magnet system 140 of the dynamic sound transducer of Fig. 2a be used.
  • Fig. 3b shows an enlarged portion B of Fig. 3a
  • the magnetic ring 240 has a substantially U-shaped cross section, wherein no complete magnetic ring, but only magnetic segments 241 are provided in the U-shaped magnetic ring. Thus, 241 air gaps 242 are provided between the magnet segments.
  • the magnet system For venting the air gap of the magnet system, the magnet system is designed annular, with no complete magnetic ring, but only magnetic segments 241 are provided.
  • the resulting air gaps 242 between the individual magnet segments 241 thus allow the air to escape in the region of the magnet system.
  • the otherwise usual compressions of the air cushion in the region of the air gap of the magnet system can be avoided.
  • unwanted acoustic springs can be avoided by the compression of the air cushion.
  • airflows between the various regions of a membrane system, such as between a crimp and a dome region, or between an inner and an outer crimp (such as in FIG Fig. 2a to 2c shown) are prevented by the air gap.
  • Fig. 4 shows a schematic sectional view of a headphone.
  • the headphone has a sound transducer 300, ear pads 400, and a baffle 600.
  • the headset is placed over ear 700 by ear cushions 400.
  • the headphone according to the fourth embodiment has a curved baffle 600.
  • the flat baffle according to the prior art and its corresponding sound transmission serves to control the acoustic path to the outside world and the back of the sound transducer.
  • grids or similar elements are often placed on the back of the transducer. Through these elements However, unwanted reflections may occur, which may affect the acoustic reproduction of the transducer.
  • the baffle 600 is configured bent and at the same time constitutes an outer wall or sleeve for the headphones. Thus, no undesired acoustic effects are created by an additional protective housing. By means of the curved baffle 600, a reflection-free termination to the outside world can thus be achieved.

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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)
  • Headphones And Earphones (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Description

Die vorliegende Erfindung betrifft einen dynamischen Schallwandler und einen Hörer.The present invention relates to a dynamic sound transducer and a listener.

Bei herkömmlichen dynamischen Schallwandlern wird eine Schwingspule im Bereich der Membransicke vorgesehen, wobei Spulendrähte zur Kontaktierung der Schwingspule verwendet werden. Die Spulendrähte verbinden somit den Membranrand und die Schwingspule. Das Vorsehen derartiger Spulendrähte ist jedoch bei der Herstellung von dynamischen Schallwandlern fertigungstechnisch sehr aufwändig und kann zum Ausschuss der Schallwandler führen, beispielsweise wenn Klirrer oder Spulendrahtabrisse vorhanden sind. Da die Spulendrähte typischerweise lediglich auf einer Seite der Membran verlegt werden, kann eine asymmetrische mechanische Kraft auf die Schwingspule ausgeübt werden, so dass ein unerwünschtes Taumeln der Membran vorhanden sein kann.In conventional dynamic sound transducers, a voice coil is provided in the region of the diaphragm bead, with coil wires being used to contact the voice coil. The coil wires thus connect the diaphragm edge and the voice coil. The provision of such coil wires, however, in the production of dynamic transducers manufacturing technology very complex and can lead to rejects of the sound transducer, for example, when clutter or coil wire tears are present. Since the coil wires are typically laid on only one side of the membrane, an asymmetric mechanical force can be exerted on the voice coil, so that an undesirable tumbling of the membrane may be present.

US 2004/0141629 A1 zeigt einen dynamischen Schallwandler mit einer Membran, wobei im Bereich der Membransicke eine Schwingspule angeordnet ist. Am Rand der Membran sind zwei Elektroden vorgesehen, welche mit der Schwingspule verbunden sind. Die Verbindungsabschnitte zwischen den Elektroden und der Schwingspule werden mit einer elektrisch leitfähigen Polymerschicht beschichtet. US 2004/0141629 A1 shows a dynamic transducer with a membrane, wherein a voice coil is arranged in the region of the diaphragm bead. At the edge of the membrane two electrodes are provided, which are connected to the voice coil. The connecting portions between the electrodes and the voice coil are coated with an electrically conductive polymer layer.

US 6,320,970 B1 zeigt einen dynamischen Schallwandler mit einem Membransystem, welches eine Membran mit einer Sicke und einer inneren und äußeren Membranauflage aufweist. Ferner weist der dynamische Schallwandler eine Schwingspule auf. US 6,320,970 B1 shows a dynamic transducer with a membrane system, which has a membrane with a bead and an inner and outer membrane pad. Furthermore, the dynamic sound transducer has a voice coil.

US-A1-2005/0238197 offenbart einen dynamischen Schallwandler, dessen Membransystem eine erste und zweite Sicke mit einer inneren und äußeren Membranauflage aufweist. US-A1-2005 / 0238197 discloses a dynamic transducer whose membrane system has first and second beads with inner and outer membrane pads.

GB-A-2347044 zeigt einen Schallwandler, dessen Membran aus einer ersten und zweiten Sicke besteht. Gemäß einem Ausführungsbeispiel wird mindestens einer der Ränder der Membran mit einem weichen Material verbunden und darüber am Chassis befestigt. GB-A-2347044 shows a transducer whose membrane consists of a first and second bead. In one embodiment, at least one of the edges of the membrane is bonded to a soft material and secured thereto above the chassis.

Dynamische Schallwandler weisen ferner typischerweise eine Membran mit einer Sicke und einer Kalotte auf. Dabei hängt die obere Grenzfrequenz eines derartigen dynamischen Schallwandlers von der Größe der Fläche ab, welche Schall abstrahlt. Je größer die schallabstrahlende Fläche, desto tiefer liegen die obere Grenzfrequenz des Frequenzgangs. Wenn die schallabstrahlende Fläche vergrößert wird, kann ein Audiosignal mit einer reduzierten Verzerrung wiedergegeben werden.Dynamic transducers also typically include a diaphragm having a crimp and a dome. In this case, the upper limit frequency of such a dynamic sound transducer depends on the size of the surface which emits sound. The larger the sound-radiating surface, the lower the upper limit frequency of the frequency response. If the sound emitting area is increased, an audio signal having a reduced distortion can be reproduced.

Als dynamische Schallwandler sind im Lautsprecherbereich Ringradiatoren bekannt, welche eine Resonanzfrequenz im kHz Bereich aufweisen.As dynamic transducers ring radiators are known in the speaker area, which have a resonant frequency in the kHz range.

Es ist somit eine Aufgabe der vorliegenden Erfindung, einen dynamischen Schallwandler vorzusehen, welcher eine verbesserte Wiedergabe ermöglicht.It is thus an object of the present invention to provide a dynamic sound transducer which enables improved reproduction.

Diese Aufgabe wird durch einen dynamischen Schallwandler gemäß Anspruch 1 und durch einen Hörer gemäß Anspruch 5 gelöst.This object is achieved by a dynamic sound transducer according to claim 1 and by a receiver according to claim 5.

Somit wird ein dynamischer Schallwandler mit einem Membransystem, welches eine Membran mit einem Loch in der Mitte, einer ersten und zweiten Sicke und einer inneren und äußeren Membranauflage aufweist, vorgesehen. Ferner weist der Schallwandler eine Schwingspule auf, welche an einem Spulensitz in dem Bereich zwischen der ersten und zweiten Sicke angeordnet ist. Die Membran des Membransystems ist in einem Chassis angeordnet und die zweite Sicke ist innen am Chassis über die innere Membranauflage und die erste Sicke ist außen am Chassis über die äußere Membranauflage befestigt. Die Membran ist im Bereich der Spulensitze steif ausgeführt und ist zur inneren und äußeren Membranauflage hin weicher ausgeführt.Thus, a dynamic transducer is provided with a membrane system having a membrane with a hole in the center, first and second beads, and inner and outer membrane pads. Furthermore, the sound transducer has a voice coil, which is arranged on a coil seat in the region between the first and second bead. The membrane of the membrane system is disposed in a chassis and the second bead is secured to the inside of the chassis via the inner membrane pad and the first bead is attached to the exterior of the chassis via the outer membrane pad. The membrane is designed stiff in the coil seats and is made softer towards the inner and outer membrane pad.

Die vorliegende Erfindung betrifft ebenfalls einen Schallwandler mit einem Membransystem, welches eine erste und zweite Sicke sowie eine Schwingspule aufweist, welche in dem Bereich zwischen der ersten und zweiten Sicke angeordnet ist.The present invention also relates to a sound transducer having a diaphragm system having first and second beads and a voice coil disposed in the region between the first and second beads.

Die Erfindung betrifft den Gedanken, einen dynamischen Schallwandler mit einer Membran vorzusehen, welche (halbseitig) mit einer leitenden Beschichtung beschichtet ist. Die Mitte der Membran kann dabei einen Isolierstreifen aufweisen, welcher keine leitfähige Beschichtung aufweist. So kann die Fläche der leitenden Beschichtung in zwei voneinander isolierte Abschnitte eingeteilt werden. Die Spulendrähte der Spule können dabei kurz abgeschnitten und in einer unmittelbaren Nähe zur Spule elektrisch leitend an der Membran befestigt bzw. geklebt werden, so dass eine elektrische Verbindung mit dem Membranrand über die leitfähige Schicht der Membran vorgesehen wird. Das Chassis des dynamischen Wandlers kann zwei Leitbahnen aufweisen, wobei die Membran mit der leitfähigen Beschichtung in bzw. an das Chassis eingeklebt bzw. befestigt wird, so dass die leitfähige Beschichtung der Membran einen leitfähigen Kontakt mit dem Chassis aufweist.The invention relates to the idea of providing a dynamic sound transducer with a membrane which is (half-sidedly) coated with a conductive coating. The center of the membrane can have an insulating strip, which has no conductive coating. Thus, the surface of the conductive coating can be divided into two mutually insulated sections. The coil wires of the coil can be cut short and be attached or glued in an immediate proximity to the coil electrically conductive to the membrane, so that an electrical connection with the membrane edge on the conductive layer of the membrane is provided. The chassis of the dynamic transducer may have two conductive lines, with the membrane having the conductive coating glued to the chassis so that the conductive coating of the membrane has a conductive contact with the chassis.

Da keine bewegten Spulendrähte zwischen der Spule und dem Membranrand mehr vorgesehen sind, können die oben angeführten Probleme nicht auftreten.Since there are no longer any moving coil wires between the coil and the edge of the membrane, the above-mentioned problems can not occur.

Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Ausführungsbeispiele und Vorteile der Erfindung werden nachstehend unter Bezugnahme auf die Zeichnung näher erläutert.

Fig. 1a
zeigt eine schematische Draufsicht auf eine Membran,
Fig. 1b
zeigt eine Schnittansicht der Membran von Fig. 1a,
Fig. 2a
zeigt eine Schnittansicht eines dynamischen Wandlers gemäß einem Ausführungsbeispiel,
Fig. 2b
zeigt eine perspektivische Ansicht des dynamischen Wandlers von Fig. 2a,
Fig. 2c
zeigt eine weitere perspektivische Ansicht des dynamischen Wandlers von Fig. 2a,
Fig. 3a
zeigt eine perspektivische Ansicht eines Magnetringes für einen dynamischen Schallwandler,
Fig. 3b
zeigt eine vergrößerte Darstellung des Ausschnitts B in Fig. 3a, und
Fig. 4
zeigt einen Hörer.
Embodiments and advantages of the invention are explained below with reference to the drawing.
Fig. 1a
shows a schematic plan view of a membrane,
Fig. 1b
shows a sectional view of the membrane of Fig. 1a .
Fig. 2a
shows a sectional view of a dynamic transducer according to an embodiment,
Fig. 2b
shows a perspective view of the dynamic transducer of Fig. 2a .
Fig. 2c
shows a further perspective view of the dynamic transducer of Fig. 2a .
Fig. 3a
shows a perspective view of a magnetic ring for a dynamic sound transducer,
Fig. 3b
shows an enlarged view of the section B in Fig. 3a , and
Fig. 4
shows a listener.

Fig. 1a zeigt eine Draufsicht auf ein Membransystem eines dynamischen Schallwandlers. Die Membran 10 ist mit einer Schwingspule 20 verbunden und in einem Chassis 30 eingebettet. Die Membran 10 weist auf ihrer einen Seite zwei metallisierte Flächen 11 sowie einen isolierenden, d. h. nicht elektrisch beschichteten Abschnitt 12 zwischen den beiden metallisierten Flächen 11 auf. Die Spulendrähte 25 der Schwingspule 20 sind jeweils auf eine der metallisierten Flächen 11 leitend aufgeklebt bzw. leitend mit den metallisierten Flächen 11 verbunden. Am Rande der Membran 10 bzw. am Chassis 30 sind zwei Kontaktelemente 15 vorgesehen, welche leitend mit den beiden metallisierten Flächen 11 jeweils beispielsweise durch Kleben verbunden sind. Die beiden elektrischen Kontaktelemente dienen dazu, die Schwingspule über die elektrisch leitenden Flächen mit einer elektrischen Schaltung G zu koppeln, welche beispielsweise dazu dient, die Schwingspule mit einem Signal zu beaufschlagen. Fig. 1a shows a plan view of a diaphragm system of a dynamic sound transducer. The membrane 10 is connected to a voice coil 20 and embedded in a chassis 30. The membrane 10 has on its one side two metallized surfaces 11 and an insulating, ie not electrically coated portion 12 between the two metallized surfaces 11. The coil wires 25 of the voice coil 20 are respectively adhesively bonded to one of the metallized surfaces 11 or conductively connected to the metallized surfaces 11. At the edge of the membrane 10 or on the chassis 30, two contact elements 15 are provided, which are conductively connected to the two metallized surfaces 11, for example, by gluing. The two electrical contact elements serve to couple the voice coil via the electrically conductive surfaces with an electrical circuit G, which serves, for example, to apply a signal to the voice coil.

Fig. 1b zeigt eine Schnittansicht des Membransystems von Fig. 1a. Die Membran 10 ist in dem Chassis 30 angeordnet und weist eine Schwingspule 20 mit einem Spulendraht 25 auf. Fig. 1b shows a sectional view of the membrane system of Fig. 1a , The diaphragm 10 is disposed in the chassis 30 and has a voice coil 20 with a coil wire 25.

Nachfolgend wird ein beispielhaftes Verfahren zur Herstellung eines oben angeführten dynamischen Schallwandlers detailliert beschrieben.Hereinafter, an exemplary method for manufacturing a dynamic transducer mentioned above will be described in detail.

Eine Seite der Membran, vorzugsweise die Unterseite, wird beispielsweise in einem Sputterprozess mit einer elektrisch leitfähigen Schicht 11 beschichtet. Um einen Isolierabschnitt 12 vorzusehen, kann ein Teil der Membran während des Sputterprozesses abgedeckt werden. Die leitfähige Schicht 11 kann beispielsweise durch Sputtern von Al (einige Angström) und durch Sputtern von AU (ca. 2000 Angström) hergestellt werden. Somit werden zwei elektrische Kontaktflächen 11 vorgesehen, welche durch den Isolierabschnitt 12 voneinander getrennt bzw. isoliert sind. Diese elektrischen Kontaktflächen 11 dienen dazu, den Membransitz und den Spulensitz elektrisch leitend miteinander zu verbinden. Die Anschlussdrähte 25 einer Schwingspule 20 werden anschließend nach innen gebogen, die Isolierung der Anschlussdrähte der Schwingspule werden thermisch im Nahbereich der Spule abisoliert (bei ca. 380°) und gekürzt. Die Spulen 25 können anschließend auf herkömmliche Art und Weise auf die Membranen 10 aufgesetzt und befestigt werden. Die beiden abisolierten und gekürzten Anschlussdrähte 25 der Schwingspule 20 werden mit den beiden Kontaktflächen 11 der elektrisch leitenden Schicht elektrisch leitend miteinander verbunden bzw. aufgeklebt. Das Chassis 30 des dynamischen Schallwandlers weist an dem Membransitz zwei Drähte 15 auf, die mit einer Leiterplatte in dem dynamischen Schallwandler verbunden sind. Die Membranen 10 werden in das Chassis 30 eingelegt, und die Drähte werden entsprechend kontaktiert. Die Membran kann in das Chassis eingeklebt bzw. daran befestigt werden.One side of the membrane, preferably the underside, is coated with an electrically conductive layer 11 in a sputtering process, for example. To provide an insulating portion 12, a portion of the membrane may be covered during the sputtering process. The conductive layer 11 may be formed, for example, by sputtering Al (a few angstroms) and sputtering AU (about 2000 angstroms). Thus, two electrical contact surfaces 11 are provided, which are separated or isolated from each other by the insulating portion 12. These electrical contact surfaces 11 serve to electrically connect the membrane seat and the coil seat with each other. The connecting wires 25 of a voice coil 20 are then bent inward, the insulation of the connecting wires of the voice coil are thermally stripped in the vicinity of the coil (at about 380 °) and shortened. The coils 25 may then be placed and secured to the membranes 10 in a conventional manner. The two stripped and shortened connecting wires 25 of the voice coil 20 are electrically conductively connected or glued to one another with the two contact surfaces 11 of the electrically conductive layer. The chassis 30 of the dynamic transducer has at the membrane seat two wires 15 which are connected to a printed circuit board in the dynamic transducer. The membranes 10 are inserted into the chassis 30, and the wires are contacted accordingly. The membrane can be glued or attached to the chassis.

Somit kann ein dynamischer Schallwandler erhalten werden, welcher einen Nennwiderstand aufweist, welcher geringfügig größer als der Nennwiderstand der Spule ist. Vorzugsweise weist die Kontaktierung lediglich einen Übergangswiderstand von einigen wenigen Ohm auf. Der Isolationsabschnitt 12 kann vorzugsweise kleiner als die erste und zweite elektrisch leitfähige Fläche 11 ausgestaltet sein. Dies erlaubt ein einfaches und örtlich flexibles Kontaktieren der Drähte 15, da einer der Drähte 15 an einer beliebigen Stelle, vorzugsweise in der Nähe des äußeren Randes, mit der ersten leitfähigen Fläche verbunden werden kann. Der andere Draht wird entsprechend mit der zweiten leitfähigen Fläche verbunden. Vorzugsweise wird eine Seite der Membran mit einem mittigen streifenförmigen Isolationsabschnitt 12 ausgestattet und die verbleibenden näherungsweise halbkreisförmigen Flächen einer Seite der Membran werden mit der ersten und zweiten elektrisch leitfähigen Fläche beschichtet. Durch eine möglichst große erste und zweite elektrisch leitfähige Fläche kann auch ein geringer elektrischer Widerstand zwischen den Drähten 15 und den Anschlussdrähten 25 erreicht werden. Ein derartiger dynamischer Schallwandler kann vorzugsweise in einem Kopfhörer, einem Hörer oder einer Hör-Sprech-Garnitur verwendet werden.Thus, a dynamic sound transducer having a nominal resistance which is slightly larger than the nominal resistance of the coil can be obtained. Preferably, the contact has only a contact resistance of a few ohms. The insulating section 12 may preferably be designed smaller than the first and second electrically conductive surface 11. This allows easy and locally flexible contacting of the wires 15 since one of the wires 15 can be connected to the first conductive surface at any location, preferably near the outer edge. The other wire is connected to the second conductive surface accordingly. Preferably, one side of the membrane is provided with a central strip-shaped insulation section 12 and the remaining approximately semicircular surfaces of one side of the membrane are coated with the first and second electrically conductive surfaces. By a very large first and second electrically conductive surface and a low electrical resistance between the wires 15 and the leads 25 can be achieved. Such a dynamic sound transducer may preferably be used in a headphone, a handset or a headset.

Fig. 2a zeigt eine Schnittansicht eines dynamischen Schallwandlers gemäß der Erfindung. Der dynamische Schallwandler weist ein Chassis 130, eine Membran 110 mit zwei Sicken 110a, 110b, eine Schwingspule 120 sowie ein Magnetsystem 140 auf. Fig. 2a shows a sectional view of a dynamic transducer according to the invention. The dynamic sound transducer has a chassis 130, a membrane 110 with two beads 110 a, 110 b, a voice coil 120 and a magnet system 140.

Fig. 2b zeigt eine perspektivische schematische Ansicht eines dynamischen Schallwandlers gemäß Fig. 2a. Der dynamische Schallwandler weist dabei zwei Sicken, jedoch keine Kalotte auf, d.h. in der Mitte der Membran ist ein Loch 150 vorgesehen. Fig. 2b shows a perspective schematic view of a dynamic transducer according to Fig. 2a , The dynamic transducer has two beads, but no dome, ie in the middle of the membrane, a hole 150 is provided.

Fig. 2c zeigt eine weitere perspektivische Ansicht eines dynamischen Schallwandlers von Fig. 2a. Insbesondere ist hierbei das entsprechende Membransystem gezeigt. Das Membransystem weist eine äußere Membranauflage 111 und eine innere Membranauflage 112 sowie einen Durchgang bzw. ein Loch 150 auf. Zwischen der äußeren Membranauflage 111 und dem Spulensitz 122 ist eine erste Sicke 110a und zwischen dem Spulensitz 122 und der inneren Membranauflage 112 ist eine zweite Sicke 110b vorgesehen. Fig. 2c shows a further perspective view of a dynamic transducer of Fig. 2a , In particular, the corresponding membrane system is shown here. The membrane system has an outer membrane pad 111 and an inner membrane pad 112 and a passage or hole 150. Between the outer membrane support 111 and the coil seat 122 is a first bead 110a and between the coil seat 122 and the inner membrane pad 112, a second bead 110b is provided.

Die Erfindung betrifft somit den Gedanken, auftretende Verzerrungen zu reduzieren bzw. zu vermeiden, indem die Membranfläche erhöht wird, wobei eine obere Grenzfrequenz aufrecht erhalten wird. Ferner wird ein dynamischer Schallwandler vorgesehen, welcher eine reduzierte Resonanzfrequenz aufweist, so dass ein derartiger Schallwandler als Breitbandwandler verwendet werden kann. Zur Reduktion der Schwingungsmoden wird ein höherer Umfang relativ zu dem Kalottenwandler vorgesehen.
Die Erfindung betrifft somit den Gedanken, einen dynamischen Schallwandler mit zwei Sicken 110a, 110b, jedoch ohne Kalotte vorzusehen. Die beiden Sicken 110a, 110b werden dabei innen und außen am Chassis 130 des dynamischen Wandlers befestigt. Eine Spule 120 zum Antrieb der Membran wird in der Mitte 122 zwischen der äußeren und inneren Sicke 110a, 110b vorgesehen. In dem Bereich der Membran, wo die Spule angeordnet ist, d. h. am Spulensitz 122, ist die Membran 110 steif ausgeführt, was durch eine entsprechende Kontur der Membran erreicht werden kann. Die Membran wird ferner zu den Randbereichen, d. h. den Membranauflagen 111, 112, hin weicher. Dadurch, dass die Membran keine einheitliche Steifigkeit aufweist, hängt die Größe der schallabstrahlenden Fläche von der Frequenz ab. Bei tiefen Frequenzen schwingt ein großer Teil der Sicken 110a, 110b homogen mit der Spule 120 und stellt somit eine große schallabstrahlende Fläche dar. Wenn die Frequenz jedoch erhöht wird, schwingt lediglich ein Nahbereich des Spulensitzes 122, so dass die schallabstrahlende Fläche reduziert wird. Somit können hohe Frequenzanteile entsprechend abgestrahlt werden. Die obere Grenzfrequenz des dynamischen Schallwandlers wird dabei außerhalb des Hörbereichs eingestellt.
Wenn die aktive schallabstrahlende Fläche des dynamischen Schallwandlers vergrößert wird, werden geringere Hübe zur Erzeugung der Schallsignale ermöglicht, was Verzerrungen reduzieren kann.The invention thus relates to the idea of reducing or avoiding occurring distortions by increasing the membrane area, wherein an upper limit frequency is maintained. Furthermore, a dynamic sound transducer is provided, which has a reduced resonance frequency, so that such a sound transducer can be used as a broadband converter. To reduce the vibration modes, a higher circumference is provided relative to the calotte converter.
The invention thus relates to the idea to provide a dynamic transducer with two beads 110a, 110b, but without dome. The two beads 110a, 110b are fastened inside and outside on the chassis 130 of the dynamic transducer. A coil 120 for driving the membrane is provided at the center 122 between the outer and inner beads 110a, 110b. In the region of the membrane where the coil is arranged, ie on the coil seat 122, the membrane 110 is made rigid, which can be achieved by a corresponding contour of the membrane. The membrane is further softened toward the edge regions, ie the membrane supports 111, 112. Due to the fact that the membrane does not have a uniform rigidity, the size of the sound-radiating surface depends on the frequency. At low frequencies, a large part of the beads 110a, 110b vibrates homogeneously with the coil 120 and thus represents a large sound radiating surface. However, when the frequency is increased, only a near portion of the coil seat 122 vibrates, so that the sound radiating surface is reduced. Thus, high frequency components can be emitted accordingly. The upper limit frequency of the dynamic sound transducer is set outside the listening area.
As the active sound radiating surface of the dynamic transducer is increased, lower strokes are allowed to produce the sound signals, which can reduce distortion.

Der dynamische Schallwandler gemäß einem Ausführungsbeispiel weist einen Ringradiator mit einer bedampften Folie (Duofol) auf, um die Resonanzfrequenz zu reduzieren. Somit kann ein Breitbandwandler vorgesehen werden, welcher beispielsweise in einem offenen Kopfhörer verwendet werden kann.
Die Membran des dynamischen Schallwandlers kann bedampft werden. Durch den vergrößerten Umfang der Membran können Schwingungsmoden sich schlechter ausbreiten. Somit kann ein gleichmäßiger Amplituden- und Frequenzgang erhalten werden.The dynamic transducer according to an embodiment has a Ringradiator with a vapor-deposited foil (Duofol) in order to reduce the resonance frequency. Thus, a broadband converter can be provided, which can be used for example in an open headphone.
The membrane of the dynamic transducer can be steamed. Due to the enlarged circumference of the membrane, vibration modes can propagate more poorly. Thus, a uniform amplitude and frequency response can be obtained.

Fig. 3a zeigt eine perspektivische Ansicht eines Magnetringes für einen dynamischen Wandler. Der Magnetring 240 gemäß Fig. 3a kann beispielsweise in dem dynamischen Schallwandler gemäß Fig. 2a bzw. in dem Magnetsystem 140 des dynamischen Schallwandlers von Fig. 2a verwendet werden. Fig. 3a shows a perspective view of a magnetic ring for a dynamic transducer. The magnetic ring 240 according to Fig. 3a For example, in the dynamic transducer according to Fig. 2a or in the magnet system 140 of the dynamic sound transducer of Fig. 2a be used.

Fig. 3b zeigt einen vergrößerten Abschnitt B von Fig. 3a. Der Magnetring 240 weist einen im Wesentlichen U-förmigen Querschnitt auf, wobei kein kompletter Magnetring, sondern lediglich Magnetsegmente 241 in dem U-förmigen Magnetring vorgesehen werden. Somit sind zwischen den Magnetsegmenten 241 Luftspalte 242 vorgesehen. Fig. 3b shows an enlarged portion B of Fig. 3a , The magnetic ring 240 has a substantially U-shaped cross section, wherein no complete magnetic ring, but only magnetic segments 241 are provided in the U-shaped magnetic ring. Thus, 241 air gaps 242 are provided between the magnet segments.

Zur Entlüftung des Luftspaltes des Magnetsystems wird das Magnetsystem ringförmig ausgestaltet, wobei kein kompletter Magnetring, sondern lediglich Magnetsegmente 241 vorgesehen werden. Die hierbei entstehenden Luftspalte 242 zwischen den einzelnen Magnetsegmenten 241 ermöglichen somit ein Entweichen der Luft im Bereich des Magnetsystems. Die Luft entweicht dabei insbesondere zur Innenseite des Magnetsystems, wenn die Tauchspule starke Bewegungen ausführt. Damit können die ansonsten üblichen Kompressionen des Luftpolsters im Bereich des Luftspaltes des Magnetsystems vermieden werden. Somit können insbesondere ungewollte akustische Federn durch die Kompression des Luftpolsters vermieden werden. Ferner können durch das Vorsehen der Magnetsegmente 241 Luftströmungen zwischen den verschiedenen Bereichen eines Membransystems wie beispielsweise zwischen einem Sicken- und einem Kalottenbereich oder zwischen einer inneren und einer äußeren Sicke (wie beispielsweise gemäß Fig. 2a bis 2c gezeigt) durch den Luftspalt verhindert werden.For venting the air gap of the magnet system, the magnet system is designed annular, with no complete magnetic ring, but only magnetic segments 241 are provided. The resulting air gaps 242 between the individual magnet segments 241 thus allow the air to escape in the region of the magnet system. The air escapes in particular to the inside of the magnet system, when the plunger coil makes strong movements. Thus, the otherwise usual compressions of the air cushion in the region of the air gap of the magnet system can be avoided. Thus, in particular unwanted acoustic springs can be avoided by the compression of the air cushion. Further, by providing the magnet segments 241, airflows between the various regions of a membrane system, such as between a crimp and a dome region, or between an inner and an outer crimp (such as in FIG Fig. 2a to 2c shown) are prevented by the air gap.

Fig. 4 zeigt eine schematische Schnittansicht eines Kopfhörers. Der Kopfhörer weist einen Schallwandler 300, Ohrpolster 400 und eine Schallwand 600 auf. Bei Betrieb wird der Kopfhörer mittels der Ohrpolster 400 über ein Ohr 700 platziert. Fig. 4 shows a schematic sectional view of a headphone. The headphone has a sound transducer 300, ear pads 400, and a baffle 600. In operation, the headset is placed over ear 700 by ear cushions 400.

Während herkömmliche Schallwandler von Kopfhörern typischerweise in eine bzw. an eine ebene Schallwand eingebettet werden, weist der Kopfhörer gemäß dem vierten Ausführungsbeispiel eine gebogene Schallwand 600 auf.Whereas conventional sound transducers of headphones are typically embedded in a flat baffle, the headphone according to the fourth embodiment has a curved baffle 600.

Die ebene Schallwand gemäß dem Stand der Technik sowie seinen entsprechende Schalldurchlässigkeit dient dazu, den akustischen Weg zur Außenwelt sowie zur Rückseite des Schallwandlers zu steuern. Zum Schutz des Wandlers werden oftmals Gitter oder ähnliche Elemente auf der Rückseite des Schallwandlers angeordnet. Durch diese Elemente können jedoch unerwünschte Reflektionen entstehen, welche die akustische Wiedergabe des Schallwandlers beeinflussen können.The flat baffle according to the prior art and its corresponding sound transmission serves to control the acoustic path to the outside world and the back of the sound transducer. To protect the transducer, grids or similar elements are often placed on the back of the transducer. Through these elements However, unwanted reflections may occur, which may affect the acoustic reproduction of the transducer.

Gemäß diesem Beispiel wird die Schallwand 600 gebogen ausgestaltet und stellt gleichzeitig eine äußere Wand bzw. Hülle für den Kopfhörer dar. Somit entstehen keine unerwünschten akustischen Effekte durch ein zusätzliches Schutzgehäuse. Mittels der gebogenen Schallwand 600 kann somit ein reflektionsfreier Abschluss zur Außenwelt hin erreicht werden.According to this example, the baffle 600 is configured bent and at the same time constitutes an outer wall or sleeve for the headphones. Thus, no undesired acoustic effects are created by an additional protective housing. By means of the curved baffle 600, a reflection-free termination to the outside world can thus be achieved.

Claims (9)

  1. Dynamic sound converter, having
    a membrane system which has a membrane (110) having a hole (150) in the centre and which comprises a first and a second bead (110a, 110b), an inner and outer membrane support (112, 111) and a coil seat (122), and
    having an oscillation coil (120) which is arranged on the coil seat (122) in the region between the first and second bead (110a, 110b),
    wherein the membrane (110) of the membrane system is arranged in a chassis (130) and the second bead (110b) is secured at the inner side to the chassis (130) via the inner membrane support (112) and the first bead (110a) is secured at the outer side to the chassis (130) via the outer membrane support (111),
    wherein the membrane (110) is constructed to be rigid in the region of the coil seat (122), which is achieved by means of a corresponding contour of the membrane (110), and is constructed to be softer in the direction towards the inner and outer membrane support (112, 111).
  2. Dynamic sound converter according to claim 1, wherein
    the membrane system (10) is arranged in a chassis (30) and has a first and a second metallised surface (11) which are separated from each other by means of an insulation surface, wherein at least a first and a second contact element (15) are arranged on the chassis (30) in such a manner that the first contact element is connected to the first metallised surface (11) in an electrically conductive manner and the second contact element (15) is connected to the second metallised surface (11) in an electrically conductive manner.
  3. Dynamic sound converter according to either claim 1 or claim 2, having
    the membrane (10, 110),
    the oscillation coil (20, 120), and
    the magnet system (140),
    wherein the magnet system has a magnet ring (240) comprising a large number of magnet segments (241).
  4. Dynamic sound converter according to claim 3, wherein at least one air gap (242) is provided between the magnet segments (241).
  5. Headphone having
    a dynamic sound converter (300) according to any one of claims 1 to 4, and a curved sound wall (600).
  6. Headphone according to claim 5, wherein
    the sound converter (300) is arranged on or in the sound wall (600).
  7. Headphone according to either claim 5 or claim 6, wherein the sound wall (600) is constructed as an outer sheath of the housing of the headphone.
  8. Headphone having
    a dynamic sound converter according to any one of claims 1 to 4.
  9. Headset having
    a dynamic sound converter according to any one of claims 1 to 4.
EP08715665.9A 2007-01-31 2008-01-30 Dynamic sound transducer, and receiver Active EP2163120B1 (en)

Applications Claiming Priority (2)

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DE102007005620A DE102007005620B4 (en) 2007-01-31 2007-01-31 Dynamic sound transducer, earpiece and headset
PCT/EP2008/000692 WO2008092645A2 (en) 2007-01-31 2008-01-30 Dynamic sound transducer, and receiver

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EP2163120A2 EP2163120A2 (en) 2010-03-17
EP2163120B1 true EP2163120B1 (en) 2017-04-05

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5082764B2 (en) * 2007-10-25 2012-11-28 ソニー株式会社 Earpad and headphone device
DE102008024816B4 (en) * 2008-05-23 2015-07-16 Sennheiser Electronic Gmbh & Co. Kg Dynamic electro-acoustic transducer and handset
DE102012214263B4 (en) * 2012-08-10 2019-01-24 Sennheiser Electronic Gmbh & Co. Kg Dynamic electroacoustic transducer
TWI492641B (en) * 2012-11-13 2015-07-11 Cotron Corp Vibrating element
GB201321325D0 (en) * 2013-12-03 2014-01-15 Ecole Polytechnique F D Rale De Lausanne A sound diffusion system for directional sound enhancement
TWI477159B (en) 2014-05-27 2015-03-11 Cotron Corp Vibrating element
DE102015120637A1 (en) 2015-11-27 2017-06-14 Sennheiser Electronic Gmbh & Co. Kg Electrodynamic transducer
US10321235B2 (en) * 2016-09-23 2019-06-11 Apple Inc. Transducer having a conductive suspension member
DE102018103966A1 (en) 2017-02-28 2018-08-30 Sennheiser Electronic Gmbh & Co. Kg headphone
US20190321853A1 (en) * 2018-04-24 2019-10-24 uBeam Inc. Elastic layer for ultrasonic transducer

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1931886A (en) * 1926-08-30 1933-10-24 Bell Telephone Labor Inc Acoustic apparatus
US1990409A (en) * 1932-02-19 1935-02-05 Neville Athol Ernest Acoustical diaphragm
US3665124A (en) * 1968-12-30 1972-05-23 Nippon Musical Instruments Mfg Loudspeaker having annular diaphragm with double voice coil
US3979566A (en) * 1973-12-12 1976-09-07 Erazm Alfred Willy Electromagnetic transducer
US4315112A (en) * 1979-12-12 1982-02-09 Alan Hofer Speaker
US4644581A (en) * 1985-06-27 1987-02-17 Bose Corporation Headphone with sound pressure sensing means
JPH0686385A (en) * 1992-08-31 1994-03-25 Matsushita Electric Ind Co Ltd Electrodynamic speaker
SE511947C2 (en) * 1997-08-15 1999-12-20 Peltor Ab Hearing protection with control buttons immersed in one hearing cap
US6038330A (en) * 1998-02-20 2000-03-14 Meucci, Jr.; Robert James Virtual sound headset and method for simulating spatial sound
US6320970B1 (en) * 1998-09-25 2001-11-20 Eugene J. Czerwinski High frequency compression drivers
CA2299151C (en) * 1999-02-17 2009-10-20 Vifa-Speak A/S A loudspeaker
US6801634B2 (en) * 2000-07-31 2004-10-05 Harman International Industries, Inc. Loudspeaker coil suspension system
CN1311712C (en) * 2000-12-26 2007-04-18 安德斯·萨格伦 Concentric co-planar multiband electro-acoustic converter
US20040141629A1 (en) * 2003-01-21 2004-07-22 Merry Electronics Co., Ltd. Combination voice coil and diaphragm device for receiver and its fabrication method
FR2854537A1 (en) * 2003-04-29 2004-11-05 Hong Cong Tuyen Pham ACOUSTIC HEADPHONES FOR THE SPATIAL SOUND RETURN.
JP4127235B2 (en) * 2004-04-16 2008-07-30 ソニー株式会社 Headphone device
US7031488B2 (en) * 2004-04-23 2006-04-18 Sun Technique Electric Co., Ltd. Super tweeter
CN101061748B (en) * 2004-09-23 2012-07-18 楼氏电子亚洲有限公司 Vibrating element for an electroacoustic transducer
GB2440768A (en) * 2006-08-08 2008-02-13 Selex Sensors & Airborne Sys Magnet assembly for moving coil actuator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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US20100183173A1 (en) 2010-07-22
EP2163120A2 (en) 2010-03-17
US8731231B2 (en) 2014-05-20
DE102007005620A1 (en) 2008-08-07
DE102007005620B4 (en) 2011-05-05
WO2008092645A2 (en) 2008-08-07
WO2008092645A3 (en) 2008-12-11

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