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FR939127A - Microphones - Google Patents

Microphones

Info

Publication number
FR939127A
FR939127A FR939127DA FR939127A FR 939127 A FR939127 A FR 939127A FR 939127D A FR939127D A FR 939127DA FR 939127 A FR939127 A FR 939127A
Authority
FR
France
Prior art keywords
microphones
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
English (en)
Inventor
Michael Lawrence Gayford
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR939127A publication Critical patent/FR939127A/fr
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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/08—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR939127D 1944-08-29 1946-04-04 Microphones Expired FR939127A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16408/44A GB611209A (en) 1944-08-29 1944-08-29 Improvements in or relating to microphones

Publications (1)

Publication Number Publication Date
FR939127A true FR939127A (fr) 1948-11-04

Family

ID=10076781

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939127D Expired FR939127A (fr) 1944-08-29 1946-04-04 Microphones

Country Status (3)

Country Link
US (1) US2527540A (fr)
FR (1) FR939127A (fr)
GB (1) GB611209A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692060A (en) * 1995-05-01 1997-11-25 Knowles Electronics, Inc. Unidirectional microphone

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE396402A (fr) * 1931-03-31
US2141420A (en) * 1936-07-28 1938-12-27 Bell Telephone Labor Inc Acoustic device
US2093664A (en) * 1936-07-30 1937-09-21 Bell Telephone Labor Inc Acoustic device
US2227580A (en) * 1938-06-30 1941-01-07 Bell Telephone Labor Inc Acoustic device

Also Published As

Publication number Publication date
GB611209A (en) 1948-10-27
US2527540A (en) 1950-10-31

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