FR478162A - Microphone - Google Patents

Microphone

Info

Publication number
FR478162A
FR478162A FR478162DA FR478162A FR 478162 A FR478162 A FR 478162A FR 478162D A FR478162D A FR 478162DA FR 478162 A FR478162 A FR 478162A
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)
Inventor
Eric Magnus Campbell Tigerstedt
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.)
ERIC MAGNUS CAMPBELL TIGERSTED
Original Assignee
ERIC MAGNUS CAMPBELL TIGERSTED
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 ERIC MAGNUS CAMPBELL TIGERSTED filed Critical ERIC MAGNUS CAMPBELL TIGERSTED
Application granted granted Critical
Publication of FR478162A publication Critical patent/FR478162A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/026—Microphones in which the sound is perpendicular to the current crossing the transducer material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR478162D 1914-04-09 1915-03-26 Microphone Expired FR478162A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE478162X 1914-04-09

Publications (1)

Publication Number Publication Date
FR478162A true FR478162A (en) 1915-11-26

Family

ID=1515720

Family Applications (1)

Application Number Title Priority Date Filing Date
FR478162D Expired FR478162A (en) 1914-04-09 1915-03-26 Microphone

Country Status (1)

Country Link
FR (1) FR478162A (en)

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