FR831589A - Improvements to metal membranes for acoustic devices - Google Patents

Improvements to metal membranes for acoustic devices

Info

Publication number
FR831589A
FR831589A FR831589DA FR831589A FR 831589 A FR831589 A FR 831589A FR 831589D A FR831589D A FR 831589DA FR 831589 A FR831589 A FR 831589A
Authority
FR
France
Prior art keywords
acoustic devices
metal membranes
membranes
metal
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR831589A publication Critical patent/FR831589A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR831589D 1937-01-07 1938-01-04 Improvements to metal membranes for acoustic devices Expired FR831589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE508957X 1937-01-07

Publications (1)

Publication Number Publication Date
FR831589A true FR831589A (en) 1938-09-08

Family

ID=6547101

Family Applications (1)

Application Number Title Priority Date Filing Date
FR831589D Expired FR831589A (en) 1937-01-07 1938-01-04 Improvements to metal membranes for acoustic devices

Country Status (2)

Country Link
FR (1) FR831589A (en)
GB (1) GB508957A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL281021A (en) * 1961-07-19

Also Published As

Publication number Publication date
GB508957A (en) 1939-07-07

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