FR1248166A - Noise reduction microphone device - Google Patents

Noise reduction microphone device

Info

Publication number
FR1248166A
FR1248166A FR813457A FR813457A FR1248166A FR 1248166 A FR1248166 A FR 1248166A FR 813457 A FR813457 A FR 813457A FR 813457 A FR813457 A FR 813457A FR 1248166 A FR1248166 A FR 1248166A
Authority
FR
France
Prior art keywords
noise reduction
microphone device
reduction microphone
noise
reduction
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
FR813457A
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.)
Chance Vought Aircraft Inc
Original Assignee
Chance Vought Aircraft 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 Chance Vought Aircraft Inc filed Critical Chance Vought Aircraft Inc
Application granted granted Critical
Publication of FR1248166A publication Critical patent/FR1248166A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/405—Arrangements for obtaining a desired directivity characteristic by combining a plurality of transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR813457A 1958-12-22 1959-12-18 Noise reduction microphone device Expired FR1248166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US781988A US3004103A (en) 1958-12-22 1958-12-22 Noise-reducing microphone assembly

Publications (1)

Publication Number Publication Date
FR1248166A true FR1248166A (en) 1960-12-09

Family

ID=25124572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR813457A Expired FR1248166A (en) 1958-12-22 1959-12-18 Noise reduction microphone device

Country Status (4)

Country Link
US (1) US3004103A (en)
BE (1) BE585265A (en)
DE (1) DE1114539B (en)
FR (1) FR1248166A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197574A (en) * 1962-04-16 1965-07-27 Edgar C Zane Noise suppression system
DE3843034A1 (en) * 1988-12-21 1990-06-28 Messerschmitt Boelkow Blohm MICROPHONE SYSTEM FOR DETERMINING THE DIRECTION AND POSITION OF A SOUND SOURCE
US5239578A (en) * 1990-05-15 1993-08-24 Plantronics, Inc. Noise cancelling apparatus for a telephone handset
CA2090681C (en) * 1990-09-06 1994-12-13 Michael Peter Hollier Noise-cancelling handset
US5969838A (en) * 1995-12-05 1999-10-19 Phone Or Ltd. System for attenuation of noise
EP0777404B1 (en) * 1995-12-07 2001-09-12 Phone-Or Limited System for attenuation of noise

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485405A (en) * 1944-04-21 1949-10-18 Stromberg Carlson Co Dipole microphone
US2393318A (en) * 1945-01-23 1946-01-22 Charles E Fraser Microphone
US2835735A (en) * 1953-12-04 1958-05-20 Electro Voice Anti-shock transducer

Also Published As

Publication number Publication date
DE1114539B (en) 1961-10-05
US3004103A (en) 1961-10-10
BE585265A (en) 1960-04-01

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