FR778307A - Improvements to diffusers or loudspeaker membranes, or microphones of all kinds - Google Patents

Improvements to diffusers or loudspeaker membranes, or microphones of all kinds

Info

Publication number
FR778307A
FR778307A FR778307DA FR778307A FR 778307 A FR778307 A FR 778307A FR 778307D A FR778307D A FR 778307DA FR 778307 A FR778307 A FR 778307A
Authority
FR
France
Prior art keywords
diffusers
microphones
kinds
loudspeaker membranes
loudspeaker
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
Marcei Dodinet
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 FR778307A publication Critical patent/FR778307A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR778307D 1933-11-29 1933-11-29 Improvements to diffusers or loudspeaker membranes, or microphones of all kinds Expired FR778307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR778307T 1933-11-29

Publications (1)

Publication Number Publication Date
FR778307A true FR778307A (en) 1935-03-14

Family

ID=9202101

Family Applications (1)

Application Number Title Priority Date Filing Date
FR778307D Expired FR778307A (en) 1933-11-29 1933-11-29 Improvements to diffusers or loudspeaker membranes, or microphones of all kinds

Country Status (1)

Country Link
FR (1) FR778307A (en)

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