FR938781A - Sound transducer device - Google Patents

Sound transducer device

Info

Publication number
FR938781A
FR938781A FR938781DA FR938781A FR 938781 A FR938781 A FR 938781A FR 938781D A FR938781D A FR 938781DA FR 938781 A FR938781 A FR 938781A
Authority
FR
France
Prior art keywords
sound transducer
transducer device
sound
transducer
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
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 Automatic Electric Laboratories Inc filed Critical Automatic Electric Laboratories Inc
Application granted granted Critical
Publication of FR938781A publication Critical patent/FR938781A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR938781D 1941-01-27 1946-11-16 Sound transducer device Expired FR938781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US376094A US2298764A (en) 1941-01-27 1941-01-27 Sound translating device

Publications (1)

Publication Number Publication Date
FR938781A true FR938781A (en) 1948-10-25

Family

ID=23483682

Family Applications (1)

Application Number Title Priority Date Filing Date
FR938781D Expired FR938781A (en) 1941-01-27 1946-11-16 Sound transducer device

Country Status (3)

Country Link
US (1) US2298764A (en)
FR (1) FR938781A (en)
NL (1) NL68610C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493734A (en) * 1945-05-23 1950-01-03 Sonotone Corp Magnetic insert earphone insertable in the ear of the user
US2540487A (en) * 1946-10-19 1951-02-06 Bell Telephone Labor Inc Electroacoustic transducer
US2486837A (en) * 1948-12-11 1949-11-01 Avco Mfg Corp Magnetic assembly for permanent magnet type loudspeakers
US3113186A (en) * 1962-02-06 1963-12-03 Walter E Heller & Company Telephone device
TWM508867U (en) * 2015-04-24 2015-09-11 Jetvox Acoustic Corp Loudspeaker structure with centeral noise cancellation

Also Published As

Publication number Publication date
US2298764A (en) 1942-10-13
NL68610C (en)

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