EP1102517A2 - Elektromagnetischer Wandler für Hörgeräte - Google Patents
Elektromagnetischer Wandler für Hörgeräte Download PDFInfo
- Publication number
- EP1102517A2 EP1102517A2 EP00120789A EP00120789A EP1102517A2 EP 1102517 A2 EP1102517 A2 EP 1102517A2 EP 00120789 A EP00120789 A EP 00120789A EP 00120789 A EP00120789 A EP 00120789A EP 1102517 A2 EP1102517 A2 EP 1102517A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- converter according
- membranes
- anchor
- tongues
- arrangement
- 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
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
Definitions
- the invention relates to an electromagnetic transducer Sound generation in hearing aids.
- a z. B. from I. Veit, Technical Acoustics, Vogel Verlag, Würzburg, 1978, known electromagnetic Transducer of the aforementioned type has a housing on, in which an electromagnetic drive is provided which is a coil, a drive magnet and a Anchor assembly includes. There is also a membrane arrangement in the housing attached mechanically to the anchor assembly is coupled to movements of the armature arrangement in sound signals to walk.
- the known electromagnetic transducer has only one Anchor and a membrane, so that the efficiency of the Converter is limited and also when operating the converter moving parts to vibrate the entire transducer assembly to lead. So there are feedback phenomena on the hearing aid not be ruled out.
- the invention has for its object an electromagnetic Train transducers such that, on the one hand, the efficiency the transducer arrangement is improved and on the other feedback caused by vibrations of the device can be avoided or at least reduced.
- This object is achieved in that the membrane arrangement comprises two separate membranes that face each other Sides of the drive are arranged, also identical are trained and driven in opposite directions, that of the driven or driving by the movement Parts mechanical total momentum is minimized.
- the two membranes are related symmetrically be arranged on the drive. This means one consistent continuation of the idea of symmetry.
- the anchor assembly comprises two separately movable Anchor. Each anchor is connected to one of the membranes. This leads to a further symmetrization of the overall structure and the individual components.
- the two anchors can be identical and in connection with the two Membranes are preassembled.
- Claims 5 and 6 relate to a first embodiment of the invention in which two separate anchors between the respective poles of a drive magnet and the central region of the membranes are arranged and at least sections parallel to the membranes.
- the membranes are connected in the middle to the anchors.
- the anchors When excited the field coil, the anchors are opposed to either both attracted or repelled together by the drive magnet, resulting in an opposite but symmetrized movement of the membranes and also the drive parts.
- Claims 7 ff relate to a modified second Embodiment in which the disposed between the membranes Drive magnet is divided in the middle, but the armature not between the ends of the drive magnet and the diaphragms are arranged, but as parallel to each other Anchor tongues in a central gap of the drive magnet.
- the transducer tongues are connected to the membranes via a rigid connecting element that at the free end each anchor tongue is attached. Both anchor tongues go about intermediate areas bent out of their common level over into a U-end area of the armature by a coil is surrounded.
- the anchor tongues thus form the central areas and the U-end region of the anchor elements a closed one magnetic circuit, resulting in a particularly advantageous compensation the magnetic direct force when using the Double membrane principle with two anchors.
- the electromagnetic transducer 1 has a housing 2, in which an electromagnetic drive 3 is arranged, the a coil 4, a drive magnet 5 and an armature arrangement 6 includes.
- a membrane arrangement is also provided, which comprises two separate membranes 7, 7 ', which are on themselves opposite sides of the drive 3 are arranged, identically designed and driven in opposite directions are that driven by the movement of the or driving Parts mechanical total impulse minimized is.
- Both membranes 7 are symmetrical with respect to the drive 3 arranged and close one with an outlet pipe socket between them 8 related airspace 9.
- the armature arrangement 6 consists of two separately movable anchors 10, 10 ', each anchor 10, 10' with one of the membranes 7, 7 'is connected.
- Embodiments are the armature between the drive magnet 5 and the central region of the membranes 7, 7 ' arranged and run in sections parallel to the membranes 7, 7 '.
- the two anchors 10, 10 ' are by a U-shaped, resilient element is formed.
- the coil 4 is arranged.
- the drive magnet 5 sits between the U-legs 13 of the U-shaped element.
- the drive magnet 5 is divided in the middle, two essentially the same parallel next to each other Armature tongues 15 are in a central gap 16 of the drive magnet arranged.
- Each anchor tongue 15 is on hers free end 17 via a connecting element 18 with one of the two membranes 7, 7 'rigidly connected.
- the two anchor tongues 15 go through from their common Level bent-out intermediate areas 20 in a U-end area 21 of the armature arrangement 6, which passes through the coil 4.
- the anchor tongues 15, the intermediate areas 20 and the U-end area 21 of the armature arrangement 6 form a closed one magnetic circuit.
- the membranes 7, 7 ' run parallel to housing side walls 25. In between space-saving the drive magnet, which with both membranes 7, 7 'cooperates. In the embodiment shown in Figures 2-4 are those separated by the central gap 16 Parts of the drive magnet 5 held in a magnetic yoke 27.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Neurosurgery (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electromagnets (AREA)
- Hard Magnetic Materials (AREA)
- Amplifiers (AREA)
- Control Of El Displays (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
Description
- FIG 1
- eine schematische Darstellung eines elektromagnetischen Schallwandlers;
- FIG 2
- einen schematischen Aufbau eines elektromagnetischen Schallwandlers mit kompensierter magnetischer Gleichkraft;
- FIG 3
- einen Schnitt gemäß Schnittlinie III - III in FIG 2;
- FIG 4
- einen Schnitt gemäß Schnittlinie IV - IV in FIG 2.
Claims (18)
- Elektromagnetischer Wandler (1) zur Schallerzeugung in Hörhilfen, insbesondere miniaturisierten elektronischen Hörgeräten, mit einem Gehäuse(2), einem darin angeordneten, mindestens eine Spule(4), einen Antriebsmagneten (5) und eine Ankeranordnung (6) umfassenden elektromagnetischen Antrieb (3) und einer im Gehäuse (2) befestigten Membranenanordnung, die mechanisch an die Ankeranordnung (6) angekoppelt ist, um Bewegungen der Ankeranordnung (6) in Schallsignale zu wandeln,
dadurch gekennzeichnet, daß die Membranenanordnung zwei gesonderte Membranen (7, 7') umfaßt, die auf sich gegenüberliegenden Seiten des Antriebs (3) angeordnet, identisch ausgebildet und derart gegenläufig antreibbar sind, daß der durch die Bewegung der angetriebenen oder antreibenden Teile auftretende mechanische Gesamtimpuls minimiert ist. - Wandler nach Anspruch 1,
dadurch gekennzeichnet , daß die beiden Membranen (7, 7') symmetrisch bezogen auf den Antrieb (3) angeordnet sind. - Wandler nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß zwischen den beiden Membranen (7, 7') ein mit einem Ausgangsrohrstutzen (8) des Gehäuses (2) in Verbindung stehender Luftraum (9) (Volumen) eingeschlossen ist. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankeranordnung (6) zwei getrennt bewegbare Anker (10, 10') umfaßt und jeder Anker (10, 10') mit einer der Membranen (7, 7') verbunden ist. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Anker (10, 10') zwischen dem Antriebsmagneten (5) und den Mittelbereichen der Membranen (7, 7') zumindest abschnittsweise parallel zu den Membranen (7, 7') verlaufen. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die beiden Anker (10, 10') durch ein U-förmiges, federndes Element gebildet werden, wobei im U-Mittelbereich (12) die Spule (4) angeordnet ist und zwischen den U-Schenkeln (13) der Antriebsmagnet (5) befestigt ist. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß der Antriebsmagnet (5) mittig geteilt ist und zwei im wesentlichen gleichebig parallel nebeneinander verlaufende Ankerzungen (15, 15') in einem Mittelspalt (16) des Antriebsmagneten (5) angeordnet sind. - Wandler nach dem vorhergehenden Anspruch,
dadurch gekennzeichnet, daß jede Ankerzunge (15, 15') an ihrem freien Ende (17) über ein Verbindungselement (18) mit einer der beiden Membranen (7, 7') in Verbindung steht. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die beiden Ankerzungen (15, 15') über aus ihrer gemeinsamen Ebene ausgebogene Zwischenbereiche (20) in einen U-Endbereich (21) der Ankeranordnung (6) übergehen, der die Spule (4) durchsetzt. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankerzungen (15, 15'), die Zwischenbereiche (20) und der U-Endbereich (21) der Ankeranordnung (6) einen geschlossenen magnetischen Kreis bilden. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankerzungen (15, 15') gleiche Ausmaße und gleiche Masse aufweisen. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Membranen (7, 7') parallel zu Gehäuseseitenwandungen (25) verlaufen. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die durch den Mittelspalt (16) getrennten Elemente des Antriebsmagneten (5) in einem Magnetjoch (27) angeordnet sind. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ankerzungen (15, 15') parallel zu den Membranen (7, 7') verlaufen. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die den Membranen (7, 7') zugewandten Seiten des Magnetjoches (27) zumindest abschnittsweise parallel zu den Membranen (7, 7') verlaufen. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die parallel und gleichebig zueinander verlaufenden Bereiche der Ankerzungen (15, 15') durch einen schmalen Luftspalt (30) voneinander getrennt sind. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Membranen (7, 7') und der Antrieb (3) bezogen auf eine in der Ebene der Ankerzungen (15, 15') verlaufende Symmetrieebene spiegelsymmetrisch ausgebildet sind. - Wandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß von den freien Enden der Ankerzungen (15, 15') zu den Membranen (7, 7') verlaufende Verbindungselemente (18) bezogen auf den Luftspalt (30) zwischen den Ankerzungen (15, 15') seitlich versetzt verlaufen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19954880 | 1999-11-15 | ||
| DE19954880A DE19954880C1 (de) | 1999-11-15 | 1999-11-15 | Elektromagnetischer Wandler zur Schallerzeugung in Hörhilfen, insbesondere miniaturisierten elektronischen Hörgeräten |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1102517A2 true EP1102517A2 (de) | 2001-05-23 |
| EP1102517A3 EP1102517A3 (de) | 2008-03-05 |
| EP1102517B1 EP1102517B1 (de) | 2010-06-23 |
Family
ID=7929085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00120789A Expired - Lifetime EP1102517B1 (de) | 1999-11-15 | 2000-09-22 | Elektromagnetischer Wandler für Hörgeräte |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6563933B1 (de) |
| EP (1) | EP1102517B1 (de) |
| JP (1) | JP4744685B2 (de) |
| CN (1) | CN1163106C (de) |
| AT (1) | ATE472232T1 (de) |
| DE (2) | DE19954880C1 (de) |
| DK (1) | DK1102517T3 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004103019A3 (en) * | 2003-05-09 | 2005-02-24 | Knowles Electronics Llc | Apparatus and method for generating acoustic energy in a receiver assembly |
| US7190803B2 (en) | 2002-04-09 | 2007-03-13 | Sonion Nederland Bv | Acoustic transducer having reduced thickness |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7164776B2 (en) * | 2000-01-07 | 2007-01-16 | Knowles Electronics, Llc. | Vibration balanced receiver |
| AU2001245773A1 (en) | 2000-03-15 | 2001-09-24 | Knowles Electronics, Llc. | Vibration-dampening receiver assembly |
| US7181035B2 (en) | 2000-11-22 | 2007-02-20 | Sonion Nederland B.V. | Acoustical receiver housing for hearing aids |
| US7088839B2 (en) | 2001-04-04 | 2006-08-08 | Sonion Nederland B.V. | Acoustic receiver having improved mechanical suspension |
| AU2002332247A1 (en) * | 2002-09-24 | 2004-04-19 | Rion Co., Ltd. | Electroacoustic transducer |
| WO2004049756A1 (en) * | 2002-11-22 | 2004-06-10 | Knowles Electronics, Llc | An apparatus for creating acoustic energy in a balance receiver assembly and manufacturing method thereof |
| US7688168B2 (en) * | 2003-02-27 | 2010-03-30 | University Of Washington | Actuators based on ferromagnetic shape memory alloy composites |
| US8072302B2 (en) * | 2003-02-27 | 2011-12-06 | University Of Washington Through Its Center For Commercialization | Inchworm actuator based on shape memory alloy composite diaphragm |
| JP4418817B2 (ja) * | 2003-02-27 | 2010-02-24 | ユニヴァーシティ オブ ワシントン | 強磁性形状記憶合金複合材料および前記材料を組み込んだアクチュエータの設計 |
| US7280016B2 (en) * | 2003-02-27 | 2007-10-09 | University Of Washington | Design of membrane actuator based on ferromagnetic shape memory alloy composite for synthetic jet actuator |
| WO2004112429A1 (en) * | 2003-06-18 | 2004-12-23 | Qijun Wu | A low-inductance electromagnetic drive without driving the magnetic flux circuit |
| EP1757161B1 (de) * | 2004-05-14 | 2016-11-30 | Sonion Nederland B.V. | Elektroakustischer wandler mit doppelter membran |
| US7648589B2 (en) * | 2004-09-08 | 2010-01-19 | University Of Washington | Energy absorbent material |
| WO2006105268A2 (en) * | 2005-03-28 | 2006-10-05 | Knowles Electronics, Llc | Acoustic assembly for a transducer |
| DK1895811T3 (en) * | 2006-08-28 | 2016-08-29 | Sonion Nederland Bv | Several speakers with a common acoustic tube |
| WO2008107902A2 (en) * | 2007-03-07 | 2008-09-12 | Galmedics Biotech Ltd. | Devices, systems and methods for shortening menstrual period duration |
| US7595444B2 (en) * | 2007-04-07 | 2009-09-29 | Bret Thomas Stewart | Electromagnetic transducer for instrument pickups |
| US8586176B2 (en) * | 2007-11-02 | 2013-11-19 | University Of Washington | Shape memory alloy fibers and shape memory polymer fibers and films and their composites for reversible shape changes |
| US20090147983A1 (en) * | 2007-12-07 | 2009-06-11 | Mekell Jiles | Method and system of a linkage assembly for use in an electroacoustic transducer |
| CN201234336Y (zh) * | 2008-07-18 | 2009-05-06 | 比亚迪股份有限公司 | 一种听筒单元 |
| BRPI0924402A2 (pt) * | 2009-03-19 | 2016-01-26 | Pioneer Corp | dispositivo alto-falante |
| JP4545222B1 (ja) * | 2009-07-13 | 2010-09-15 | 三菱電機エンジニアリング株式会社 | 電磁変換器 |
| TW201106719A (en) * | 2009-08-12 | 2011-02-16 | Cotron Corp | Earphone |
| US8548186B2 (en) | 2010-07-09 | 2013-10-01 | Shure Acquisition Holdings, Inc. | Earphone assembly |
| US8538061B2 (en) | 2010-07-09 | 2013-09-17 | Shure Acquisition Holdings, Inc. | Earphone driver and method of manufacture |
| US8549733B2 (en) | 2010-07-09 | 2013-10-08 | Shure Acquisition Holdings, Inc. | Method of forming a transducer assembly |
| EP2466915B1 (de) * | 2010-12-14 | 2016-03-23 | Sonion Nederland B.V. | Mehrschichtige Armatur für einen Lautsprecher mit beweglicher Armatur |
| US9473855B2 (en) * | 2011-03-21 | 2016-10-18 | Sonion Nederland B.V. | Moving armature receiver assemblies with vibration suppression |
| CN102361503A (zh) * | 2011-08-18 | 2012-02-22 | 苏州恒听电子有限公司 | 具有改良结构的耳机动铁单元 |
| CN102833656A (zh) * | 2012-09-03 | 2012-12-19 | 何朝阳 | 一种用于扬声装置的动铁单元 |
| CN103079120B (zh) * | 2012-12-25 | 2015-11-25 | 苏州恒听电子有限公司 | 一种带有定位底盘的屏蔽外壳及带有该屏蔽外壳的受话器 |
| WO2016022677A1 (en) * | 2014-08-06 | 2016-02-11 | Knowles Electronics, Llc | Receiver with common coil core structure |
| US9872109B2 (en) | 2014-12-17 | 2018-01-16 | Knowles Electronics, Llc | Shared coil receiver |
| CN108028993A (zh) * | 2015-09-16 | 2018-05-11 | 阿尔卑斯电气株式会社 | 发声装置及其制造方法 |
| DK3579578T3 (da) * | 2018-06-07 | 2022-05-02 | Sonion Nederland Bv | Miniaturelydgiver |
| CN213280074U (zh) | 2019-12-30 | 2021-05-25 | 美商楼氏电子有限公司 | 平衡电枢接收器 |
| CN213586253U (zh) | 2019-12-30 | 2021-06-29 | 美商楼氏电子有限公司 | 平衡电枢式接收器 |
| US11671778B1 (en) | 2021-12-30 | 2023-06-06 | Knowles Electronics, Llc | Acoustic receivers with multiple diaphragms |
| CN115314812B (zh) * | 2022-07-07 | 2025-11-14 | 中科声特美(苏州)声学科技有限公司 | 一种双振膜受话器及电子设备 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1559158A (en) * | 1923-12-11 | 1925-10-27 | Gen Electric | Sound-emitting device |
| US2548062A (en) * | 1948-03-22 | 1951-04-10 | Scott N Reger | Bone conducting receiver with electromagnetic vibrator |
| US3617653A (en) * | 1967-05-16 | 1971-11-02 | Tibbetts Industries | Magnetic reed type acoustic transducer with improved armature |
| US3560667A (en) * | 1968-05-01 | 1971-02-02 | Industrial Research Prod Inc | Transducer having an armature arm split along its length |
| US4272654A (en) * | 1979-01-08 | 1981-06-09 | Industrial Research Products, Inc. | Acoustic transducer of improved construction |
| JPS5899098A (ja) * | 1981-12-08 | 1983-06-13 | Matsushita Electric Ind Co Ltd | 電磁研型音響変換器 |
| US4956868A (en) * | 1989-10-26 | 1990-09-11 | Industrial Research Products, Inc. | Magnetically shielded electromagnetic acoustic transducer |
| JPH03216098A (ja) * | 1990-01-20 | 1991-09-24 | Victor Co Of Japan Ltd | 電気音響変換器 |
| JPH0446498A (ja) * | 1990-06-13 | 1992-02-17 | Foster Electric Co Ltd | 双方向性動電形音響変換器 |
| AT407815B (de) * | 1990-07-13 | 2001-06-25 | Viennatone Gmbh | Hörgerät |
| JPH11234781A (ja) * | 1998-02-17 | 1999-08-27 | Sony Corp | スピーカ装置 |
-
1999
- 1999-11-15 DE DE19954880A patent/DE19954880C1/de not_active Expired - Lifetime
-
2000
- 2000-09-22 DE DE50015947T patent/DE50015947D1/de not_active Expired - Lifetime
- 2000-09-22 EP EP00120789A patent/EP1102517B1/de not_active Expired - Lifetime
- 2000-09-22 AT AT00120789T patent/ATE472232T1/de not_active IP Right Cessation
- 2000-09-22 DK DK00120789.3T patent/DK1102517T3/da active
- 2000-11-02 CN CNB001338803A patent/CN1163106C/zh not_active Expired - Lifetime
- 2000-11-09 US US09/708,638 patent/US6563933B1/en not_active Expired - Lifetime
- 2000-11-13 JP JP2000345529A patent/JP4744685B2/ja not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7190803B2 (en) | 2002-04-09 | 2007-03-13 | Sonion Nederland Bv | Acoustic transducer having reduced thickness |
| US7970161B2 (en) | 2002-04-09 | 2011-06-28 | Sonion Nederland B.V. | Acoustic transducer having reduced thickness |
| WO2004103019A3 (en) * | 2003-05-09 | 2005-02-24 | Knowles Electronics Llc | Apparatus and method for generating acoustic energy in a receiver assembly |
| US7415125B2 (en) | 2003-05-09 | 2008-08-19 | Knowles Electronics, Llc | Apparatus and method for creating acoustic energy in a receiver assembly with improved diaphragms-linkage arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| US6563933B1 (en) | 2003-05-13 |
| ATE472232T1 (de) | 2010-07-15 |
| CN1296373A (zh) | 2001-05-23 |
| DE50015947D1 (de) | 2010-08-05 |
| DK1102517T3 (da) | 2010-10-18 |
| EP1102517B1 (de) | 2010-06-23 |
| JP4744685B2 (ja) | 2011-08-10 |
| JP2001186597A (ja) | 2001-07-06 |
| EP1102517A3 (de) | 2008-03-05 |
| DE19954880C1 (de) | 2001-01-25 |
| CN1163106C (zh) | 2004-08-18 |
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