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FR2521381B2 - ACOUSTIC TRANSDUCER - Google Patents

ACOUSTIC TRANSDUCER

Info

Publication number
FR2521381B2
FR2521381B2 FR8202530A FR8202530A FR2521381B2 FR 2521381 B2 FR2521381 B2 FR 2521381B2 FR 8202530 A FR8202530 A FR 8202530A FR 8202530 A FR8202530 A FR 8202530A FR 2521381 B2 FR2521381 B2 FR 2521381B2
Authority
FR
France
Prior art keywords
acoustic transducer
acoustic
transducer
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.)
Expired
Application number
FR8202530A
Other languages
French (fr)
Other versions
FR2521381A2 (en
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.)
Filing date
Publication date
Priority claimed from US06/123,719 external-priority patent/US4295010A/en
Application filed by Lectret SA filed Critical Lectret SA
Priority to FR8202530A priority Critical patent/FR2521381B2/en
Priority to US06/461,147 priority patent/US4453044A/en
Publication of FR2521381A2 publication Critical patent/FR2521381A2/en
Application granted granted Critical
Publication of FR2521381B2 publication Critical patent/FR2521381B2/en
Expired 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
    • 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)
FR8202530A 1980-02-22 1982-02-09 ACOUSTIC TRANSDUCER Expired FR2521381B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8202530A FR2521381B2 (en) 1980-02-22 1982-02-09 ACOUSTIC TRANSDUCER
US06/461,147 US4453044A (en) 1982-02-09 1983-01-26 Electro-acoustic transducer with plural piezoelectric film

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
FR8202530A FR2521381B2 (en) 1980-02-22 1982-02-09 ACOUSTIC TRANSDUCER

Publications (2)

Publication Number Publication Date
FR2521381A2 FR2521381A2 (en) 1983-08-12
FR2521381B2 true FR2521381B2 (en) 1987-11-27

Family

ID=26222752

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8202530A Expired FR2521381B2 (en) 1980-02-22 1982-02-09 ACOUSTIC TRANSDUCER

Country Status (1)

Country Link
FR (1) FR2521381B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4829420A (en) * 1971-08-20 1973-04-19
US3816774A (en) * 1972-01-28 1974-06-11 Victor Company Of Japan Curved piezoelectric elements
US4295010A (en) * 1980-02-22 1981-10-13 Lectret S.A. Plural piezoelectric polymer film acoustic transducer

Also Published As

Publication number Publication date
FR2521381A2 (en) 1983-08-12

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