DE69021770D1 - Reflektionsrichtmikrophone. - Google Patents

Reflektionsrichtmikrophone.

Info

Publication number
DE69021770D1
DE69021770D1 DE69021770T DE69021770T DE69021770D1 DE 69021770 D1 DE69021770 D1 DE 69021770D1 DE 69021770 T DE69021770 T DE 69021770T DE 69021770 T DE69021770 T DE 69021770T DE 69021770 D1 DE69021770 D1 DE 69021770D1
Authority
DE
Germany
Prior art keywords
directional microphones
reflective directional
reflective
microphones
directional
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 - Lifetime
Application number
DE69021770T
Other languages
English (en)
Other versions
DE69021770T2 (de
Inventor
Gary Elko
Robert Alfred Kubli
Jeffrey Phillip Mcateer
James Edward West
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Publication of DE69021770D1 publication Critical patent/DE69021770D1/de
Application granted granted Critical
Publication of DE69021770T2 publication Critical patent/DE69021770T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • H04R1/326—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for microphones
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Stereophonic Arrangements (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
DE69021770T 1989-05-19 1990-05-11 Reflektionsrichtmikrophone. Expired - Lifetime DE69021770T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/354,535 US4965775A (en) 1989-05-19 1989-05-19 Image derived directional microphones

Publications (2)

Publication Number Publication Date
DE69021770D1 true DE69021770D1 (de) 1995-09-28
DE69021770T2 DE69021770T2 (de) 1996-01-11

Family

ID=23393767

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69021770T Expired - Lifetime DE69021770T2 (de) 1989-05-19 1990-05-11 Reflektionsrichtmikrophone.

Country Status (8)

Country Link
US (1) US4965775A (de)
EP (1) EP0398595B1 (de)
JP (1) JPH0736635B2 (de)
KR (1) KR0152663B1 (de)
CA (1) CA2016301C (de)
DE (1) DE69021770T2 (de)
DK (1) DK0398595T3 (de)
HK (1) HK33896A (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5289544A (en) * 1991-12-31 1994-02-22 Audiological Engineering Corporation Method and apparatus for reducing background noise in communication systems and for enhancing binaural hearing systems for the hearing impaired
DE4315000A1 (de) * 1993-05-06 1994-11-10 Opel Adam Ag Geräuschkompensierte Freisprechanlage in Kraftfahrzeugen
US5561737A (en) * 1994-05-09 1996-10-01 Lucent Technologies Inc. Voice actuated switching system
US6204796B1 (en) 1994-07-01 2001-03-20 Gemstar Development Corporation Apparatus and methods for generating codes for controlling appliances from a remote controller
JPH08107683A (ja) * 1994-10-03 1996-04-23 Mitsubishi Electric Corp 電動機の運転制御装置及び絶縁型双方向直流電圧変換回路
US5625697A (en) * 1995-05-08 1997-04-29 Lucent Technologies Inc. Microphone selection process for use in a multiple microphone voice actuated switching system
US5748757A (en) * 1995-12-27 1998-05-05 Lucent Technologies Inc. Collapsible image derived differential microphone
US5742693A (en) * 1995-12-29 1998-04-21 Lucent Technologies Inc. Image-derived second-order directional microphones with finite baffle
US5781643A (en) * 1996-08-16 1998-07-14 Shure Brothers Incorporated Microphone plosive effects reduction techniques
US6122389A (en) * 1998-01-20 2000-09-19 Shure Incorporated Flush mounted directional microphone
DE60045392D1 (de) * 2000-03-24 2011-01-27 Intel Corp Räumliches schallsteuerungssystem
WO2002048659A2 (en) * 2000-11-16 2002-06-20 The Trustees Of The Stevens Institute Of Technology Large aperture vibration and acoustic sensor
US7146014B2 (en) 2002-06-11 2006-12-05 Intel Corporation MEMS directional sensor system
US20070052549A1 (en) * 2005-08-22 2007-03-08 Contec Corporation Apparatus and method for updating encoded signal information stored in a remote control unit through direct key entry
US7697827B2 (en) 2005-10-17 2010-04-13 Konicek Jeffrey C User-friendlier interfaces for a camera
US7676052B1 (en) 2006-02-28 2010-03-09 National Semiconductor Corporation Differential microphone assembly
US7653487B2 (en) * 2006-10-06 2010-01-26 Toyota Motor Engineering & Manufacturing North America, Inc. Object detection apparatus and method
JP5168079B2 (ja) * 2008-10-22 2013-03-21 ヤマハ株式会社 音響装置
NO332961B1 (no) * 2008-12-23 2013-02-11 Cisco Systems Int Sarl Forhoyet toroidmikrofonapparat
TWI441525B (zh) * 2009-11-03 2014-06-11 Ind Tech Res Inst 室內收音系統及室內收音方法
NO20093511A1 (no) * 2009-12-14 2011-06-15 Tandberg Telecom As Toroidemikrofon
USD743382S1 (en) * 2013-09-20 2015-11-17 Panasonic Intellectual Property Management Co., Ltd. Microphone
US10028051B2 (en) * 2015-08-31 2018-07-17 Panasonic Intellectual Property Management Co., Ltd. Sound source localization apparatus
USD895566S1 (en) 2019-02-04 2020-09-08 Biamp Systems, LLC Speaker with amplifier
KR20200133632A (ko) * 2019-05-20 2020-11-30 삼성전자주식회사 지향성 음향 센서 및 이를 이용한 음원 거리 측정방법
US10904657B1 (en) 2019-10-11 2021-01-26 Plantronics, Inc. Second-order gradient microphone system with baffles for teleconferencing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1735905A (en) * 1926-12-30 1929-11-19 American Telephone & Telegraph Microphone mounting
US2457527A (en) * 1942-10-02 1948-12-28 Bell Telephone Labor Inc Acoustic device
US3068328A (en) * 1956-05-10 1962-12-11 Murray M Rosenfeld Pressure gradient transducers
US4742548A (en) * 1984-12-20 1988-05-03 American Telephone And Telegraph Company Unidirectional second order gradient microphone
US4675906A (en) * 1984-12-20 1987-06-23 At&T Company, At&T Bell Laboratories Second order toroidal microphone
US4589137A (en) * 1985-01-03 1986-05-13 The United States Of America As Represented By The Secretary Of The Navy Electronic noise-reducing system
US4658425A (en) * 1985-04-19 1987-04-14 Shure Brothers, Inc. Microphone actuation control system suitable for teleconference systems
US4802227A (en) * 1987-04-03 1989-01-31 American Telephone And Telegraph Company Noise reduction processing arrangement for microphone arrays

Also Published As

Publication number Publication date
KR0152663B1 (ko) 1998-11-02
HK33896A (en) 1996-03-08
JPH0736635B2 (ja) 1995-04-19
EP0398595A2 (de) 1990-11-22
KR900019527A (ko) 1990-12-24
DK0398595T3 (da) 1995-10-02
CA2016301C (en) 1995-04-18
US4965775A (en) 1990-10-23
JPH03101399A (ja) 1991-04-26
DE69021770T2 (de) 1996-01-11
CA2016301A1 (en) 1990-11-19
EP0398595A3 (de) 1991-11-06
EP0398595B1 (de) 1995-08-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition