EP1351549A3 - Pressure gradient microphone capsule - Google Patents

Pressure gradient microphone capsule Download PDF

Info

Publication number
EP1351549A3
EP1351549A3 EP03450026A EP03450026A EP1351549A3 EP 1351549 A3 EP1351549 A3 EP 1351549A3 EP 03450026 A EP03450026 A EP 03450026A EP 03450026 A EP03450026 A EP 03450026A EP 1351549 A3 EP1351549 A3 EP 1351549A3
Authority
EP
European Patent Office
Prior art keywords
membrane
sound inlet
pressure gradient
gradient microphone
microphone capsule
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.)
Granted
Application number
EP03450026A
Other languages
German (de)
French (fr)
Other versions
EP1351549B1 (en
EP1351549A2 (en
Inventor
Richard Pribyl
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.)
AKG Acoustics GmbH
Original Assignee
AKG Acoustics GmbH
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 AKG Acoustics GmbH filed Critical AKG Acoustics GmbH
Publication of EP1351549A2 publication Critical patent/EP1351549A2/en
Publication of EP1351549A3 publication Critical patent/EP1351549A3/en
Application granted granted Critical
Publication of EP1351549B1 publication Critical patent/EP1351549B1/en
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
    • 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
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones

Abstract

Die Erfindung betrifft eine elektrostatische Druckgradienten - Mikrofonkapsel zum im wesentlichen bündigen Einbau in oder hinter insbesondere ebene Einbauoberflächen (10) mit einem zwei, gegebenenfalls unterteilte, Schalleintrittsöffnungen (7,8) aufweisenden Kapselgehäuse (6), einer auf einem Membranring (2) gespannt gehaltenen Membrane (1), einer Elektrode (4) und gegebenenfalls einer akustischen Reibung (5).The invention relates to an electrostatic pressure gradient microphone capsule for essentially flush installation in or behind, in particular, flat built-in surfaces (10) with a capsule housing (6), optionally divided, sound inlet openings (7, 8), one held on a membrane ring (2) Membrane (1), an electrode (4) and optionally an acoustic friction (5).

Die Erfindung ist dadurch gekennzeichnet, dass die beiden Schalleintrittsöffnungen (7,8) auf einer Seite des Kapselgehäuses, der Frontseite (11), angeordnet sind, und dass eine Schalleintrittsöffnung (7) akustisch leitend mit der Frontseite der Membrane (1) und die andere Schalleintrittsöffnung (8) akustisch leitend mit der Rückseite der Membrane (1) verbunden ist, und dass die Membranebene zumindest im wesentlichen parallel zur Einbauoberfläche (10) verläuft.The invention is characterized in that the two sound inlet openings (7,8) on one side of the capsule housing, the front side (11) are arranged, and that a sound inlet opening (7) acoustically conductive with the front side of the membrane (1) and the other Sound inlet opening (8) is acoustically conductive connected to the back of the membrane (1), and that the membrane plane extends at least substantially parallel to the mounting surface (10).

Dadurch wird ein bündiger Einbau mit geringer Bauhöhe und verminderter Anzahl von Bauteilen erreicht.

Figure imgaf001
As a result, a flush installation with low height and reduced number of components is achieved.
Figure imgaf001
EP03450026A 2002-02-26 2003-01-27 Pressure gradient microphone capsule Expired - Lifetime EP1351549B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2902002 2002-02-26
AT0029002A AT410741B (en) 2002-02-26 2002-02-26 Pressure gradient MICROPHONE CAPSULE

Publications (3)

Publication Number Publication Date
EP1351549A2 EP1351549A2 (en) 2003-10-08
EP1351549A3 true EP1351549A3 (en) 2007-04-18
EP1351549B1 EP1351549B1 (en) 2012-11-07

Family

ID=3670931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03450026A Expired - Lifetime EP1351549B1 (en) 2002-02-26 2003-01-27 Pressure gradient microphone capsule

Country Status (4)

Country Link
US (1) US6885751B2 (en)
EP (1) EP1351549B1 (en)
CN (1) CN100508647C (en)
AT (1) AT410741B (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410498B (en) * 2001-02-20 2003-05-26 Akg Acoustics Gmbh ELECTROACOUSTIC CAPSULE
EP1513370A3 (en) * 2003-09-08 2007-08-15 Sambu Communics Co., Ltd. Condenser microphone
EP1643798B1 (en) 2004-10-01 2012-12-05 AKG Acoustics GmbH Microphone comprising two pressure-gradient capsules
US7529378B2 (en) * 2004-11-12 2009-05-05 Phonak Ag Filter for interfering signals in hearing devices
DE602007012600D1 (en) 2007-11-13 2011-03-31 Akg Acoustics Gmbh MICROPHONE ARRANGEMENT THAT HAS TWO PRESSURE GRADIENT CONVERTERS
WO2009062212A1 (en) * 2007-11-13 2009-05-22 Akg Acoustics Gmbh Microphone arrangement comprising three pressure gradient transducers
ATE540536T1 (en) * 2007-11-13 2012-01-15 Akg Acoustics Gmbh MICROPHONE ARRANGEMENT
EP2208358B1 (en) * 2007-11-13 2011-02-16 AKG Acoustics GmbH Microphone arrangement
WO2009062211A1 (en) * 2007-11-13 2009-05-22 Akg Acoustics Gmbh Position determination of sound sources
WO2009099091A1 (en) * 2008-02-08 2009-08-13 Funai Electric Co., Ltd. Microphone unit
JP5022261B2 (en) * 2008-02-08 2012-09-12 船井電機株式会社 Microphone unit
WO2009105793A1 (en) 2008-02-26 2009-09-03 Akg Acoustics Gmbh Transducer assembly
JP5481852B2 (en) * 2008-12-12 2014-04-23 船井電機株式会社 Microphone unit and voice input device including the same
KR20100092992A (en) * 2009-02-11 2010-08-24 주식회사 비에스이 Method of making sound hole in case of condenser microphone and the condenser microphone case
JP5262859B2 (en) * 2009-03-09 2013-08-14 船井電機株式会社 Microphone unit
WO2010121916A1 (en) 2009-04-23 2010-10-28 Phonic Ear A/S Cross-barrier communication system and method
JP2011124696A (en) * 2009-12-09 2011-06-23 Funai Electric Co Ltd Differential microphone unit and portable equipment
US20130177192A1 (en) * 2011-10-25 2013-07-11 Knowles Electronics, Llc Vented Microphone Module
JP5931566B2 (en) * 2012-04-26 2016-06-08 株式会社オーディオテクニカ Unidirectional microphone
DE102012017980A1 (en) 2012-09-12 2014-03-13 Audi Ag Microphone device for installation in a motor vehicle
DE102013213891A1 (en) * 2013-05-21 2014-11-27 Siemens Medical Instruments Pte. Ltd. microphone array
JP6319797B2 (en) * 2014-06-04 2018-05-09 株式会社オーディオテクニカ Condenser microphone unit
US10820074B2 (en) * 2018-06-08 2020-10-27 Polycom, Inc. Gradient micro-electro-mechanical (MEMS) microphone assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251668B (en) * 1964-10-16 1967-01-10 Akg Akustische Kino Geraete Electroacoustic converter
EP0276996A2 (en) * 1987-01-29 1988-08-03 Crystalate Electronics Limited Microphone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5226076A (en) * 1993-02-28 1993-07-06 At&T Bell Laboratories Directional microphone assembly
JP3975007B2 (en) * 1998-07-10 2007-09-12 株式会社オーディオテクニカ Unidirectional microphone
DE19963217A1 (en) * 1999-12-28 2001-07-12 Thomson Brandt Gmbh Differential pressure microphone

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT251668B (en) * 1964-10-16 1967-01-10 Akg Akustische Kino Geraete Electroacoustic converter
EP0276996A2 (en) * 1987-01-29 1988-08-03 Crystalate Electronics Limited Microphone

Also Published As

Publication number Publication date
EP1351549B1 (en) 2012-11-07
AT410741B (en) 2003-07-25
CN1441621A (en) 2003-09-10
EP1351549A2 (en) 2003-10-08
US20030165251A1 (en) 2003-09-04
CN100508647C (en) 2009-07-01
ATA2902002A (en) 2002-11-15
US6885751B2 (en) 2005-04-26

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