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FR2919978B1 - Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes - Google Patents

Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes

Info

Publication number
FR2919978B1
FR2919978B1 FR0757017A FR0757017A FR2919978B1 FR 2919978 B1 FR2919978 B1 FR 2919978B1 FR 0757017 A FR0757017 A FR 0757017A FR 0757017 A FR0757017 A FR 0757017A FR 2919978 B1 FR2919978 B1 FR 2919978B1
Authority
FR
France
Prior art keywords
associated devices
electrodynamic transducer
speaker type
ferrofluid suspension
ferrofluid
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.)
Active
Application number
FR0757017A
Other languages
English (en)
Other versions
FR2919978A1 (fr
Inventor
Gilles Milot
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.)
Acoustical Beauty Fr
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR0757017A priority Critical patent/FR2919978B1/fr
Priority to US12/672,926 priority patent/US8280096B2/en
Priority to PCT/FR2008/051478 priority patent/WO2009022085A1/fr
Priority to EP08827304.0A priority patent/EP2177047B1/fr
Publication of FR2919978A1 publication Critical patent/FR2919978A1/fr
Application granted granted Critical
Publication of FR2919978B1 publication Critical patent/FR2919978B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04R9/027—Air gaps using a magnetic fluid
    • 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
    • H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR0757017A 2007-08-09 2007-08-09 Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes Active FR2919978B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR0757017A FR2919978B1 (fr) 2007-08-09 2007-08-09 Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes
US12/672,926 US8280096B2 (en) 2007-08-09 2008-08-07 Electrodynamic transducer, in particular of the loudspeaker type with ferrofluid suspension and related devices
PCT/FR2008/051478 WO2009022085A1 (fr) 2007-08-09 2008-08-07 Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes
EP08827304.0A EP2177047B1 (fr) 2007-08-09 2008-08-07 Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0757017A FR2919978B1 (fr) 2007-08-09 2007-08-09 Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes

Publications (2)

Publication Number Publication Date
FR2919978A1 FR2919978A1 (fr) 2009-02-13
FR2919978B1 true FR2919978B1 (fr) 2011-04-29

Family

ID=39433012

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0757017A Active FR2919978B1 (fr) 2007-08-09 2007-08-09 Transducteur electrodynamique, notamment du type haut-parleur, a suspension ferrofluide et dispositifs associes

Country Status (4)

Country Link
US (1) US8280096B2 (fr)
EP (1) EP2177047B1 (fr)
FR (1) FR2919978B1 (fr)
WO (1) WO2009022085A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2141939B1 (fr) * 2008-07-02 2016-11-09 Renault SAS Mandrin pour structure de moteur de transducteur à bobine
KR100890220B1 (ko) * 2008-09-10 2009-03-25 주식회사 예일전자 감각신호출력장치
MX351734B (es) 2013-08-26 2017-10-26 Halliburton Energy Services Inc Transductores de reluctancia variable.
CN108141668B (zh) 2015-09-14 2024-04-16 翼声有限公司 音频转换器中或与其相关的改进
CN205847556U (zh) * 2016-05-26 2016-12-28 瑞声科技(新加坡)有限公司 扬声器
US11166100B2 (en) 2017-03-15 2021-11-02 Wing Acoustics Limited Bass optimization for audio systems and devices
TW201904310A (zh) 2017-03-22 2019-01-16 紐西蘭商威恩音響有限公司 有關於聲頻轉換器、薄型電子裝置及鉸鏈系統的系統、方法及裝置
CN109982221B (zh) * 2019-04-30 2024-04-30 歌尔股份有限公司 发声装置以及电子产品
CN113453129B (zh) * 2021-07-08 2022-07-05 嘉善凯斯电子股份有限公司 一种高灵敏中音喇叭

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716063B2 (de) * 1977-04-09 1979-04-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Dynamischer Wandler mit einer Schwingspule in einem mit einer magnetischen Flüssigkeit gefüllten Luftspalt
US5335287A (en) * 1993-04-06 1994-08-02 Aura, Ltd. Loudspeaker utilizing magnetic liquid suspension of the voice coil
DK171729B1 (da) * 1994-11-01 1997-04-14 Dan Kristoffersen Elektrodynamisk højttaler med væskeophængt bevægeligt system
CN101106838A (zh) * 2001-02-13 2008-01-16 松下电器产业株式会社 磁性流体的保持方法和利用该方法的扬声器
FR2892887B1 (fr) * 2005-11-03 2007-12-21 Bernard Richoux Transducteur electrodynamique a dome a suspension ferrofluide
FR2892886B1 (fr) 2005-11-03 2008-01-25 Bernard Richoux Transducteur electrodynamique, applications aux haut-parleurs et geophones
US7729504B2 (en) * 2006-02-14 2010-06-01 Ferrotec Corporation Ferrofluid centered voice coil speaker

Also Published As

Publication number Publication date
EP2177047A1 (fr) 2010-04-21
EP2177047B1 (fr) 2017-07-05
US20110188698A1 (en) 2011-08-04
FR2919978A1 (fr) 2009-02-13
US8280096B2 (en) 2012-10-02
WO2009022085A1 (fr) 2009-02-19

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