FR759145A - Perfectionnements aux microphones - Google Patents

Perfectionnements aux microphones

Info

Publication number
FR759145A
FR759145A FR759145DA FR759145A FR 759145 A FR759145 A FR 759145A FR 759145D A FR759145D A FR 759145DA FR 759145 A FR759145 A FR 759145A
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
English (en)
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 FR759145A publication Critical patent/FR759145A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
FR759145D 1932-10-22 1932-10-22 Perfectionnements aux microphones Expired FR759145A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR759145T 1932-10-22

Publications (1)

Publication Number Publication Date
FR759145A true FR759145A (fr) 1934-01-29

Family

ID=9167067

Family Applications (1)

Application Number Title Priority Date Filing Date
FR759145D Expired FR759145A (fr) 1932-10-22 1932-10-22 Perfectionnements aux microphones

Country Status (1)

Country Link
FR (1) FR759145A (fr)

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