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FR386720A - Microphone - Google Patents

Microphone

Info

Publication number
FR386720A
FR386720A FR386720DA FR386720A FR 386720 A FR386720 A FR 386720A FR 386720D A FR386720D A FR 386720DA FR 386720 A FR386720 A FR 386720A
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
Fernand-Marius Chazot
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.)
FERNAND MARIUS CHAZOT
Original Assignee
FERNAND MARIUS CHAZOT
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 FERNAND MARIUS CHAZOT filed Critical FERNAND MARIUS CHAZOT
Application granted granted Critical
Publication of FR386720A publication Critical patent/FR386720A/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
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR386720D 1907-04-16 1907-04-16 Microphone Expired FR386720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR386720T 1907-04-16

Publications (1)

Publication Number Publication Date
FR386720A true FR386720A (en) 1908-06-20

Family

ID=1432511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR386720D Expired FR386720A (en) 1907-04-16 1907-04-16 Microphone

Country Status (1)

Country Link
FR (1) FR386720A (en)

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