FR722323A - Machine parlante à diffuseur - Google Patents

Machine parlante à diffuseur

Info

Publication number
FR722323A
FR722323A FR722323DA FR722323A FR 722323 A FR722323 A FR 722323A FR 722323D A FR722323D A FR 722323DA FR 722323 A FR722323 A FR 722323A
Authority
FR
France
Prior art keywords
diffuser
speaking machine
speaking
machine
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
English (en)
Inventor
Louis Lumiere
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 FR722323A publication Critical patent/FR722323A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR722323D 1930-11-26 1930-11-26 Machine parlante à diffuseur Expired FR722323A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR722323T 1930-11-26

Publications (1)

Publication Number Publication Date
FR722323A true FR722323A (fr) 1932-03-15

Family

ID=9100915

Family Applications (1)

Application Number Title Priority Date Filing Date
FR722323D Expired FR722323A (fr) 1930-11-26 1930-11-26 Machine parlante à diffuseur

Country Status (1)

Country Link
FR (1) FR722323A (fr)

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