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FR772571A - Sound reproducing device for speaking machines or similar machines - Google Patents

Sound reproducing device for speaking machines or similar machines

Info

Publication number
FR772571A
FR772571A FR772571DA FR772571A FR 772571 A FR772571 A FR 772571A FR 772571D A FR772571D A FR 772571DA FR 772571 A FR772571 A FR 772571A
Authority
FR
France
Prior art keywords
machines
reproducing device
speaking
sound reproducing
similar
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
Josef Holy
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 FR772571A publication Critical patent/FR772571A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR772571D 1933-05-05 1934-04-28 Sound reproducing device for speaking machines or similar machines Expired FR772571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT772571X 1933-05-05

Publications (1)

Publication Number Publication Date
FR772571A true FR772571A (en) 1934-11-02

Family

ID=3680710

Family Applications (1)

Application Number Title Priority Date Filing Date
FR772571D Expired FR772571A (en) 1933-05-05 1934-04-28 Sound reproducing device for speaking machines or similar machines

Country Status (1)

Country Link
FR (1) FR772571A (en)

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