FR634878A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR634878A
FR634878A FR634878DA FR634878A FR 634878 A FR634878 A FR 634878A FR 634878D A FR634878D A FR 634878DA FR 634878 A FR634878 A FR 634878A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
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
Georges-Eugene-Alfre Hess
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 FR634878A publication Critical patent/FR634878A/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
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR634878D 1927-05-23 1927-05-23 Loud speaker Expired FR634878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR634878T 1927-05-23

Publications (1)

Publication Number Publication Date
FR634878A true FR634878A (en) 1928-03-01

Family

ID=8993887

Family Applications (1)

Application Number Title Priority Date Filing Date
FR634878D Expired FR634878A (en) 1927-05-23 1927-05-23 Loud speaker

Country Status (1)

Country Link
FR (1) FR634878A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122314A (en) * 1976-12-23 1978-10-24 Sony Corporation Loudspeaker having a laminate diaphragm of three layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122314A (en) * 1976-12-23 1978-10-24 Sony Corporation Loudspeaker having a laminate diaphragm of three layers

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