FR681819A - Device for sound reproduction - Google Patents

Device for sound reproduction

Info

Publication number
FR681819A
FR681819A FR681819DA FR681819A FR 681819 A FR681819 A FR 681819A FR 681819D A FR681819D A FR 681819DA FR 681819 A FR681819 A FR 681819A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction
sound
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
Eugene-Marie Lesieure-Desbrier
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 FR681819A publication Critical patent/FR681819A/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
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR681819D 1929-09-14 1929-09-14 Device for sound reproduction Expired FR681819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR681819T 1929-09-14

Publications (1)

Publication Number Publication Date
FR681819A true FR681819A (en) 1930-05-20

Family

ID=9023007

Family Applications (1)

Application Number Title Priority Date Filing Date
FR681819D Expired FR681819A (en) 1929-09-14 1929-09-14 Device for sound reproduction

Country Status (1)

Country Link
FR (1) FR681819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239028A (en) * 1963-11-01 1966-03-08 Willard A Murray Sound reproduction system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3239028A (en) * 1963-11-01 1966-03-08 Willard A Murray Sound reproduction system

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