FR749943A - Loudspeaker enhancements - Google Patents

Loudspeaker enhancements

Info

Publication number
FR749943A
FR749943A FR749943DA FR749943A FR 749943 A FR749943 A FR 749943A FR 749943D A FR749943D A FR 749943DA FR 749943 A FR749943 A FR 749943A
Authority
FR
France
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
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
Raymond Ferry
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 FR749943A publication Critical patent/FR749943A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
FR749943D 1932-05-04 1933-02-02 Loudspeaker enhancements Expired FR749943A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE749943X 1932-05-04

Publications (1)

Publication Number Publication Date
FR749943A true FR749943A (en) 1933-08-01

Family

ID=6649506

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749943D Expired FR749943A (en) 1932-05-04 1933-02-02 Loudspeaker enhancements

Country Status (1)

Country Link
FR (1) FR749943A (en)

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