FR852764A - Piezoelectric microphone - Google Patents

Piezoelectric microphone

Info

Publication number
FR852764A
FR852764A FR852764DA FR852764A FR 852764 A FR852764 A FR 852764A FR 852764D A FR852764D A FR 852764DA FR 852764 A FR852764 A FR 852764A
Authority
FR
France
Prior art keywords
piezoelectric microphone
piezoelectric
microphone
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
Other languages
French (fr)
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.)
Industrie Magneti Marelli SRL
Marelli Europe SpA
Original Assignee
Fabbrica Italiana Magneti Marelli SpA
Magneti Marelli SpA
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 Fabbrica Italiana Magneti Marelli SpA, Magneti Marelli SpA filed Critical Fabbrica Italiana Magneti Marelli SpA
Application granted granted Critical
Publication of FR852764A publication Critical patent/FR852764A/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
    • H04R17/02—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR852764D 1938-04-09 1939-04-06 Piezoelectric microphone Expired FR852764A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT852764X 1938-04-09

Publications (1)

Publication Number Publication Date
FR852764A true FR852764A (en) 1940-03-02

Family

ID=11327023

Family Applications (1)

Application Number Title Priority Date Filing Date
FR852764D Expired FR852764A (en) 1938-04-09 1939-04-06 Piezoelectric microphone

Country Status (1)

Country Link
FR (1) FR852764A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710822A1 (en) * 1994-11-04 1996-05-08 Societe Industrielle De Liaisons Electriques Piezoelectric vibration sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0710822A1 (en) * 1994-11-04 1996-05-08 Societe Industrielle De Liaisons Electriques Piezoelectric vibration sensor

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