FR2521380B2 - Transducteur acoustique - Google Patents

Transducteur acoustique

Info

Publication number: FR2521380B2
Authority: FR; France
Prior art keywords: acoustic transducer; acoustic; transducer
Prior art date: 1980-02-22
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.): Expired

Application number

FR8202529A

Other languages

English (en)

Other versions

FR2521380A2 (fr

Inventor

Preston Vincent Murphy

Guy Maurer

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.)

Lectret SA

Original Assignee

Lectret 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.)

1980-02-22

Filing date

1982-02-09

Publication date

1987-11-27

1980-02-22 Priority claimed from US06/123,719 external-priority patent/US4295010A/en

1982-02-09 Application filed by Lectret SA filed Critical Lectret SA

1982-02-09 Priority to FR8202529A priority Critical patent/FR2521380B2/fr

1983-08-12 Publication of FR2521380A2 publication Critical patent/FR2521380A2/fr

1987-11-27 Application granted granted Critical

1987-11-27 Publication of FR2521380B2 publication Critical patent/FR2521380B2/fr

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Piezo-Electric Transducers For Audible Bands (AREA)

FR8202529A 1980-02-22 1982-02-09 Transducteur acoustique Expired FR2521380B2 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
FR8202529A FR2521380B2 (fr)	1980-02-22	1982-02-09	Transducteur acoustique

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US06/123,719 US4295010A (en)	1980-02-22	1980-02-22	Plural piezoelectric polymer film acoustic transducer
FR8202529A FR2521380B2 (fr)	1980-02-22	1982-02-09	Transducteur acoustique

Publications (2)

Publication Number	Publication Date
FR2521380A2 FR2521380A2 (fr)	1983-08-12
FR2521380B2 true FR2521380B2 (fr)	1987-11-27

Family

ID=26222751

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8202529A Expired FR2521380B2 (fr)	1980-02-22	1982-02-09	Transducteur acoustique

Country Status (1)

Country	Link
FR (1)	FR2521380B2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2651633B1 (fr) *	1989-09-01	1992-04-30	Thomson Consumer Electronics	Element et dispositifs de transducteurs electroacoustiques a bimorphe de polymere piezoelectrique notamment pour la realisation d'un haut-parleur a diagramme de rayonnement de type lineaire.
KR100228917B1 (ko) *	1994-05-20	1999-11-01	쓰스미 시게루	음발생장치

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4829420A (fr) *	1971-08-20	1973-04-19
GB1593271A (en) *	1976-09-21	1981-07-15	Standard Telephones Cables Ltd	Electro-acoustic transducers
US4295010A (en) *	1980-02-22	1981-10-13	Lectret S.A.	Plural piezoelectric polymer film acoustic transducer

1982
- 1982-02-09 FR FR8202529A patent/FR2521380B2/fr not_active Expired

Also Published As

Publication number	Publication date
FR2521380A2 (fr)	1983-08-12

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