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FR1072621A - Microphone - Google Patents

Microphone

Info

Publication number
FR1072621A
FR1072621A FR1072621DA FR1072621A FR 1072621 A FR1072621 A FR 1072621A FR 1072621D A FR1072621D A FR 1072621DA FR 1072621 A FR1072621 A FR 1072621A
Authority
FR
France
Prior art keywords
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.)
SODET
Original Assignee
SODET
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 SODET filed Critical SODET
Application granted granted Critical
Publication of FR1072621A publication Critical patent/FR1072621A/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)
FR1072621D 1953-01-09 1953-01-09 Microphone Expired FR1072621A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1072621T 1953-01-09

Publications (1)

Publication Number Publication Date
FR1072621A true FR1072621A (en) 1954-09-14

Family

ID=9605692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1072621D Expired FR1072621A (en) 1953-01-09 1953-01-09 Microphone

Country Status (1)

Country Link
FR (1) FR1072621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1287135B (en) * 1967-06-16 1969-01-16 Telefunken Patent Electroacoustic transducer with a membrane covered with a layer of semiconductor material
FR2168396A1 (en) * 1972-01-18 1973-08-31 Siemens Ag

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1287135B (en) * 1967-06-16 1969-01-16 Telefunken Patent Electroacoustic transducer with a membrane covered with a layer of semiconductor material
FR2168396A1 (en) * 1972-01-18 1973-08-31 Siemens Ag

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