FR726180A - Improvements to acoustic diaphragms - Google Patents

Improvements to acoustic diaphragms

Info

Publication number
FR726180A
FR726180A FR726180DA FR726180A FR 726180 A FR726180 A FR 726180A FR 726180D A FR726180D A FR 726180DA FR 726180 A FR726180 A FR 726180A
Authority
FR
France
Prior art keywords
acoustic diaphragms
diaphragms
acoustic
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)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parlophone Records Ltd
Original Assignee
Gramophone Co Ltd
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 by Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR726180A publication Critical patent/FR726180A/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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR726180D 1931-01-29 1931-11-12 Improvements to acoustic diaphragms Expired FR726180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB726180X 1931-01-29

Publications (1)

Publication Number Publication Date
FR726180A true FR726180A (en) 1932-05-24

Family

ID=10495274

Family Applications (1)

Application Number Title Priority Date Filing Date
FR726180D Expired FR726180A (en) 1931-01-29 1931-11-12 Improvements to acoustic diaphragms

Country Status (1)

Country Link
FR (1) FR726180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005015949A1 (en) * 2003-08-08 2005-02-17 Koninklijke Philips Electronics N.V. Shallow loudspeaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005015949A1 (en) * 2003-08-08 2005-02-17 Koninklijke Philips Electronics N.V. Shallow loudspeaker

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