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AT322650B - MICROPHONE WITH DIRECTIONAL CHARACTERISTICS - Google Patents

MICROPHONE WITH DIRECTIONAL CHARACTERISTICS

Info

Publication number
AT322650B
AT322650B AT613872A AT613872A AT322650B AT 322650 B AT322650 B AT 322650B AT 613872 A AT613872 A AT 613872A AT 613872 A AT613872 A AT 613872A AT 322650 B AT322650 B AT 322650B
Authority
AT
Austria
Prior art keywords
microphone
directional characteristics
directional
Prior art date
Application number
AT613872A
Other languages
German (de)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Application granted granted Critical
Publication of AT322650B publication Critical patent/AT322650B/en

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
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
AT613872A 1971-07-21 1972-07-17 MICROPHONE WITH DIRECTIONAL CHARACTERISTICS AT322650B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16450771A 1971-07-21 1971-07-21

Publications (1)

Publication Number Publication Date
AT322650B true AT322650B (en) 1975-05-26

Family

ID=22594801

Family Applications (1)

Application Number Title Priority Date Filing Date
AT613872A AT322650B (en) 1971-07-21 1972-07-17 MICROPHONE WITH DIRECTIONAL CHARACTERISTICS

Country Status (6)

Country Link
US (1) US3715500A (en)
JP (1) JPS5219966B1 (en)
AT (1) AT322650B (en)
CA (1) CA948305A (en)
DE (1) DE2235169C3 (en)
GB (1) GB1407266A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1515287A (en) * 1974-05-30 1978-06-21 Plessey Co Ltd Piezoelectric transducers
US4555598A (en) * 1983-09-21 1985-11-26 At&T Bell Laboratories Teleconferencing acoustic transducer
US4742548A (en) * 1984-12-20 1988-05-03 American Telephone And Telegraph Company Unidirectional second order gradient microphone
FI77347C (en) * 1987-04-23 1989-02-10 Uuden Teknologian Keskus Oy ANORDNING FOER ATT GOERA LAETTARE SAMTIDIGT TITTANDE OCH LYSSNANDE PAO ETT AVLAEGSET OBJEKT.
US5121426A (en) * 1989-12-22 1992-06-09 At&T Bell Laboratories Loudspeaking telephone station including directional microphone
US5226076A (en) * 1993-02-28 1993-07-06 At&T Bell Laboratories Directional microphone assembly
US5633935A (en) * 1993-04-13 1997-05-27 Matsushita Electric Industrial Co., Ltd. Stereo ultradirectional microphone apparatus
US5539834A (en) * 1994-11-03 1996-07-23 At&T Corp. Baffled microphone assembly
US5692060A (en) * 1995-05-01 1997-11-25 Knowles Electronics, Inc. Unidirectional microphone
US5745588A (en) * 1996-05-31 1998-04-28 Lucent Technologies Inc. Differential microphone assembly with passive suppression of resonances
US5848172A (en) * 1996-11-22 1998-12-08 Lucent Technologies Inc. Directional microphone
US6122389A (en) * 1998-01-20 2000-09-19 Shure Incorporated Flush mounted directional microphone
US7116792B1 (en) * 2000-07-05 2006-10-03 Gn Resound North America Corporation Directional microphone system
US7280014B2 (en) * 2001-03-13 2007-10-09 Rochester Institute Of Technology Micro-electro-mechanical switch and a method of using and making thereof
US7195393B2 (en) * 2001-05-31 2007-03-27 Rochester Institute Of Technology Micro fluidic valves, agitators, and pumps and methods thereof
US20030008676A1 (en) * 2001-07-03 2003-01-09 Baumhauer John Charles Communication device having a microphone system with optimal acoustic transmission line design for improved frequency and directional response
US6842009B2 (en) * 2001-09-13 2005-01-11 Nth Tech Corporation Biohazard sensing system and methods thereof
US6717488B2 (en) * 2001-09-13 2004-04-06 Nth Tech Corporation Resonator with a member having an embedded charge and a method of making thereof
US7211923B2 (en) 2001-10-26 2007-05-01 Nth Tech Corporation Rotational motion based, electrostatic power source and methods thereof
US7378775B2 (en) * 2001-10-26 2008-05-27 Nth Tech Corporation Motion based, electrostatic power source and methods thereof
US7217582B2 (en) * 2003-08-29 2007-05-15 Rochester Institute Of Technology Method for non-damaging charge injection and a system thereof
US7287328B2 (en) * 2003-08-29 2007-10-30 Rochester Institute Of Technology Methods for distributed electrode injection
US8581308B2 (en) * 2004-02-19 2013-11-12 Rochester Institute Of Technology High temperature embedded charge devices and methods thereof
US20070074731A1 (en) * 2005-10-05 2007-04-05 Nth Tech Corporation Bio-implantable energy harvester systems and methods thereof
US7656749B2 (en) * 2007-09-04 2010-02-02 The United States Of America As Represented By The Secretary Of The Army Systems and methods for analyzing acoustic waves
NO20076609A (en) * 2007-12-21 2009-03-16 Tandberg Telecom As Microphone device
EP2551846B1 (en) * 2011-07-26 2022-01-19 AKG Acoustics GmbH Noise reducing sound reproduction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228886A (en) * 1938-10-31 1941-01-14 Rca Corp Electroacoustical apparatus
US2301744A (en) * 1941-05-31 1942-11-10 Rca Corp Electroacoustical signal translating apparatus
US2793255A (en) * 1950-11-13 1957-05-21 Rca Corp Third order, pressure gradient responsive microphone
US2699473A (en) * 1950-11-13 1955-01-11 Rca Corp Pressure gradient responsive microphone
US3573400A (en) * 1968-08-14 1971-04-06 Bell Telephone Labor Inc Directional microphone

Also Published As

Publication number Publication date
US3715500A (en) 1973-02-06
GB1407266A (en) 1975-09-24
JPS5219966B1 (en) 1977-05-31
DE2235169B2 (en) 1973-07-26
DE2235169A1 (en) 1973-02-01
CA948305A (en) 1974-05-28
DE2235169C3 (en) 1974-02-21

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Legal Events

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