FR718371A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR718371A
FR718371A FR718371DA FR718371A FR 718371 A FR718371 A FR 718371A FR 718371D A FR718371D A FR 718371DA FR 718371 A FR718371 A FR 718371A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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
Marcel Saubanere
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 FR718371A publication Critical patent/FR718371A/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
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR718371D 1931-06-08 1931-06-08 Improvements to sound reproduction systems Expired FR718371A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR718371T 1931-06-08

Publications (1)

Publication Number Publication Date
FR718371A true FR718371A (en) 1932-01-23

Family

ID=9090548

Family Applications (1)

Application Number Title Priority Date Filing Date
FR718371D Expired FR718371A (en) 1931-06-08 1931-06-08 Improvements to sound reproduction systems

Country Status (1)

Country Link
FR (1) FR718371A (en)

Similar Documents

Publication Publication Date Title
FR794451A (en) Improvements to sound reproduction systems
FR738475A (en) Improvements to television sets
FR657396A (en) Improvements to sound reproduction systems
FR30476E (en) Improvements to sound reproduction systems
FR613218A (en) Improvements to sound reproduction systems
FR719576A (en) Improvements to sound reproduction systems
FR718371A (en) Improvements to sound reproduction systems
FR731491A (en) Improvements to sound reproduction devices
FR618595A (en) Improvements to sound reproduction systems
FR699474A (en) Improvements to sound reproduction systems
FR715564A (en) Improvements to sound reproduction systems
FR41374E (en) Improvements to sound amplifiers
FR40499E (en) Improvements to sound reproduction systems
FR774196A (en) Improvements to sound reproduction systems
FR725863A (en) Improvement in sound reproduction systems
FR719953A (en) Improvements to recording devices
FR728558A (en) Improvements to sound reproducers
FR737719A (en) Improvements to sound reproduction devices such as loudspeakers
FR694448A (en) Improvements to sound reproduction systems
FR715456A (en) Advanced sound reproducer
FR709574A (en) Improvement in sound reproduction cameras
FR605544A (en) Improvements to sound reproduction systems
FR728600A (en) Improvements relating to recording devices
FR657136A (en) Improvements to sound reproduction systems
FR771081A (en) Improvements to sound reproduction systems