FR685358A - Device for the transformation of sound energy into electrical energy - Google Patents

Device for the transformation of sound energy into electrical energy

Info

Publication number
FR685358A
FR685358A FR685358DA FR685358A FR 685358 A FR685358 A FR 685358A FR 685358D A FR685358D A FR 685358DA FR 685358 A FR685358 A FR 685358A
Authority
FR
France
Prior art keywords
energy
transformation
sound
electrical energy
electrical
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR685358A publication Critical patent/FR685358A/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)
FR685358D 1929-11-22 1929-11-22 Device for the transformation of sound energy into electrical energy Expired FR685358A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE685358X 1929-11-22

Publications (1)

Publication Number Publication Date
FR685358A true FR685358A (en) 1930-07-09

Family

ID=6597830

Family Applications (1)

Application Number Title Priority Date Filing Date
FR685358D Expired FR685358A (en) 1929-11-22 1929-11-22 Device for the transformation of sound energy into electrical energy

Country Status (1)

Country Link
FR (1) FR685358A (en)

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