EP0072289A3 - Electro-acoustic transducer with intrinsically polarized dielectric capacitor - Google Patents

Electro-acoustic transducer with intrinsically polarized dielectric capacitor Download PDF

Info

Publication number
EP0072289A3
EP0072289A3 EP82401394A EP82401394A EP0072289A3 EP 0072289 A3 EP0072289 A3 EP 0072289A3 EP 82401394 A EP82401394 A EP 82401394A EP 82401394 A EP82401394 A EP 82401394A EP 0072289 A3 EP0072289 A3 EP 0072289A3
Authority
EP
European Patent Office
Prior art keywords
polarized dielectric
electro
acoustic transducer
dielectric capacitor
electrodes
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Withdrawn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
EP82401394A
Other languages
German (de)
French (fr)
Other versions
EP0072289A2 (en
Inventor
Pierre Ravinet
François Micheron
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0072289A2 publication Critical patent/EP0072289A2/en
Publication of EP0072289A3 publication Critical patent/EP0072289A3/en
Withdrawn legal-status Critical Current

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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
    • 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
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Abstract

L'invention se rapporte aux microphones à condensa­ teur à diélectrique solide polarisé. La structure vibrante soumise à la pression acoustique comporte des électrodes (7, 8) recueillant les charges électriques induites sur les faces du diélectrique polarisé. Ces électrodes sont reliées à un circuit électrique adaptateur d'impédance (51). The invention relates to condenser microphones solid polarized dielectric. The vibrating structure subjected to sound pressure has electrodes (7, 8) collecting the electric charges induced on the faces of the polarized dielectric. These electrodes are connected to an electrical impedance adapter circuit (51).

L'invention a pour objet un microphone dont la struc­ ture vibrante (1) est une plaque plane travaillant en flexion faible et attachée par son bord à un support (44, 45). The subject of the invention is a microphone whose structure vibrating structure (1) is a flat plate working in flexion weak and attached by its edge to a support (44, 45).

L'invention s'applique notamment aux microphones à pression et à gradient de pression pour les applications téléphoniques. The invention applies in particular to microphones with pressure and pressure gradient for applications telephone calls.

EP82401394A 1981-08-11 1982-07-27 Electro-acoustic transducer with intrinsically polarized dielectric capacitor Withdrawn EP0072289A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115507 1981-08-11
FR8115507A FR2511571A1 (en) 1981-08-11 1981-08-11 ELECTROACOUSTIC TRANSDUCER WITH CONDENSER WITH POLARIZED SOLID DIELECTRIC

Publications (2)

Publication Number Publication Date
EP0072289A2 EP0072289A2 (en) 1983-02-16
EP0072289A3 true EP0072289A3 (en) 1983-04-06

Family

ID=9261362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401394A Withdrawn EP0072289A3 (en) 1981-08-11 1982-07-27 Electro-acoustic transducer with intrinsically polarized dielectric capacitor

Country Status (5)

Country Link
EP (1) EP0072289A3 (en)
JP (1) JPS5841000A (en)
KR (1) KR840001425A (en)
FR (1) FR2511571A1 (en)
GB (1) GB2111799A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542552B1 (en) * 1983-03-07 1986-04-11 Thomson Csf ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC DIAPHRAGM
DE3425175A1 (en) * 1984-07-09 1986-03-27 Fernsprech- und Signalbau KG Schüler & Vershoven, 4300 Essen Piezoelectric acoustic transducer
DE3425176A1 (en) * 1984-07-09 1986-02-20 Fernsprech Und Signalbau Kg Sc Piezoelectric telephone capsule
DE3825973A1 (en) * 1988-07-29 1990-02-01 Siemens Ag ELECTROACOUSTIC UNIT TRANSFORMER
WO2003086012A1 (en) * 2002-04-11 2003-10-16 Rion Co.,Ltd Electroacoustic converter
DE102010021157A1 (en) * 2010-05-21 2011-11-24 Daniela Manger 3D stereo microphone gap
KR101781551B1 (en) * 2011-07-20 2017-09-27 삼성전자주식회사 Electric energy generating device and method of driving the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131741B (en) * 1961-02-03 1962-06-20 Siemens Ag Electrostrictive membrane for an electroacoustic transducer
FR1334235A (en) * 1961-09-29 1963-08-02 Siemens Ag Electro-acoustic transformer
DE2714709A1 (en) * 1976-04-02 1977-10-06 Matsushita Electric Ind Co Ltd ELECTROACOUSTIC CONVERTER WITH A HIGHLY POLYMERIC PIEZOELECTRIC MEMBRANE
US4064375A (en) * 1975-08-11 1977-12-20 The Rank Organisation Limited Vacuum stressed polymer film piezoelectric transducer
US4170742A (en) * 1974-07-15 1979-10-09 Pioneer Electronic Corporation Piezoelectric transducer with multiple electrode areas

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131741B (en) * 1961-02-03 1962-06-20 Siemens Ag Electrostrictive membrane for an electroacoustic transducer
FR1334235A (en) * 1961-09-29 1963-08-02 Siemens Ag Electro-acoustic transformer
US4170742A (en) * 1974-07-15 1979-10-09 Pioneer Electronic Corporation Piezoelectric transducer with multiple electrode areas
US4064375A (en) * 1975-08-11 1977-12-20 The Rank Organisation Limited Vacuum stressed polymer film piezoelectric transducer
DE2714709A1 (en) * 1976-04-02 1977-10-06 Matsushita Electric Ind Co Ltd ELECTROACOUSTIC CONVERTER WITH A HIGHLY POLYMERIC PIEZOELECTRIC MEMBRANE

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS LETTERS, vol. 11, no. 22, 30 octobre 1975, pages 532,533, Londres (GB); J.F. SEAR et al.: "Noise cancelling microphone using a piezoelectric plastics transducing element *
JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 15, no. 11, 1976, pages 2239-2240, Tokyo (JP); L. BREGER et al.: "Banding piezoelectricity in polyvinilidene fluoride" *

Also Published As

Publication number Publication date
FR2511571B1 (en) 1983-12-02
KR840001425A (en) 1984-04-30
EP0072289A2 (en) 1983-02-16
FR2511571A1 (en) 1983-02-18
GB2111799A (en) 1983-07-06
JPS5841000A (en) 1983-03-10

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19830416

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18W Application withdrawn

Withdrawal date: 19850614

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MICHERON, FRANCOIS

Inventor name: RAVINET, PIERRE