FR763382A - Microphone refinements - Google Patents

Microphone refinements

Info

Publication number
FR763382A
FR763382A FR763382DA FR763382A FR 763382 A FR763382 A FR 763382A FR 763382D A FR763382D A FR 763382DA FR 763382 A FR763382 A FR 763382A
Authority
FR
France
Prior art keywords
refinements
microphone
microphone refinements
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
Edouard Belin
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 filed Critical
Application granted granted Critical
Publication of FR763382A publication Critical patent/FR763382A/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
    • H04R21/04—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR763382D 1933-01-23 1933-01-23 Microphone refinements Expired FR763382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR763382T 1933-01-23

Publications (1)

Publication Number Publication Date
FR763382A true FR763382A (en) 1934-04-30

Family

ID=9179724

Family Applications (1)

Application Number Title Priority Date Filing Date
FR763382D Expired FR763382A (en) 1933-01-23 1933-01-23 Microphone refinements

Country Status (1)

Country Link
FR (1) FR763382A (en)

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