FR694448A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR694448A
FR694448A FR694448DA FR694448A FR 694448 A FR694448 A FR 694448A FR 694448D A FR694448D A FR 694448DA FR 694448 A FR694448 A FR 694448A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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
Rene Brunschwig
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 FR694448A publication Critical patent/FR694448A/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)
FR694448D 1929-07-25 1929-07-25 Improvements to sound reproduction systems Expired FR694448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR694448T 1929-07-25

Publications (1)

Publication Number Publication Date
FR694448A true FR694448A (en) 1930-12-03

Family

ID=9044990

Family Applications (1)

Application Number Title Priority Date Filing Date
FR694448D Expired FR694448A (en) 1929-07-25 1929-07-25 Improvements to sound reproduction systems

Country Status (1)

Country Link
FR (1) FR694448A (en)

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