FR708281A - Improvements made to electro-dynamic devices to reproduce sound - Google Patents

Improvements made to electro-dynamic devices to reproduce sound

Info

Publication number
FR708281A
FR708281A FR708281DA FR708281A FR 708281 A FR708281 A FR 708281A FR 708281D A FR708281D A FR 708281DA FR 708281 A FR708281 A FR 708281A
Authority
FR
France
Prior art keywords
electro
improvements made
reproduce sound
dynamic devices
dynamic
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
Leonard Walter Murkham
Douglas Temple Bennett
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 FR708281A publication Critical patent/FR708281A/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
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR708281D 1930-06-13 1930-12-23 Improvements made to electro-dynamic devices to reproduce sound Expired FR708281A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB708281X 1930-06-13

Publications (1)

Publication Number Publication Date
FR708281A true FR708281A (en) 1931-07-22

Family

ID=10494177

Family Applications (1)

Application Number Title Priority Date Filing Date
FR708281D Expired FR708281A (en) 1930-06-13 1930-12-23 Improvements made to electro-dynamic devices to reproduce sound

Country Status (1)

Country Link
FR (1) FR708281A (en)

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