NL7211755A - - Google Patents

Info

Publication number
NL7211755A
NL7211755A NL7211755A NL7211755A NL7211755A NL 7211755 A NL7211755 A NL 7211755A NL 7211755 A NL7211755 A NL 7211755A NL 7211755 A NL7211755 A NL 7211755A NL 7211755 A NL7211755 A NL 7211755A
Authority
NL
Netherlands
Application number
NL7211755A
Other versions
NL177879C (nl
NL177879B (nl
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 filed Critical
Publication of NL7211755A publication Critical patent/NL7211755A/xx
Publication of NL177879B publication Critical patent/NL177879B/xx
Application granted granted Critical
Publication of NL177879C publication Critical patent/NL177879C/xx

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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
NLAANVRAGE7211755,A 1971-08-31 1972-08-29 Condensatormicrofoon en een werkwijze voor het vervaardigen van een microfoon van deze soort. NL177879C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971078484U JPS5221046Y2 (cs) 1971-08-31 1971-08-31

Publications (3)

Publication Number Publication Date
NL7211755A true NL7211755A (cs) 1973-03-02
NL177879B NL177879B (nl) 1985-07-01
NL177879C NL177879C (nl) 1985-12-02

Family

ID=13663251

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7211755,A NL177879C (nl) 1971-08-31 1972-08-29 Condensatormicrofoon en een werkwijze voor het vervaardigen van een microfoon van deze soort.

Country Status (8)

Country Link
US (1) US3775572A (cs)
JP (1) JPS5221046Y2 (cs)
CA (1) CA946508A (cs)
DE (1) DE2242806C2 (cs)
FR (1) FR2151061B1 (cs)
GB (1) GB1384418A (cs)
IT (1) IT968373B (cs)
NL (1) NL177879C (cs)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5618080Y2 (cs) * 1974-09-14 1981-04-27
JPS5411857Y2 (cs) * 1975-11-14 1979-05-26
US4321432A (en) * 1978-12-23 1982-03-23 Tokyo Shibaura Denki Kabushiki Kaisha Electrostatic microphone
SE428081B (sv) * 1981-10-07 1983-05-30 Ericsson Telefon Ab L M Tilledningsram for en elektretmikrofon
US4492825A (en) * 1982-07-28 1985-01-08 At&T Bell Laboratories Electroacoustic transducer
DE3415088C1 (de) * 1984-04-21 1985-09-12 Eugen Beyer, Elektrotechnische Fabrik GmbH & Co, 7100 Heilbronn Kondensatormikrofon
US4767973A (en) * 1987-07-06 1988-08-30 Sarcos Incorporated Systems and methods for sensing position and movement
US5854846A (en) * 1996-09-06 1998-12-29 Northrop Grumman Corporation Wafer fabricated electroacoustic transducer
DE19742249C2 (de) * 1997-09-25 1999-08-05 Georg Neumann Gmbh Berlin Mikrophon
EP1183906A4 (en) * 1999-04-12 2008-01-23 Knowles Electronics Llc PACKAGE FOR MICRO-FACTORY SILICON MICROPHONE CONDENSER
WO2001082649A1 (fr) * 2000-04-26 2001-11-01 Mitsubishi Denki Kabushiki Kaisha Microphone electrostatique a capacitance a electret semi-conducteur
KR100331600B1 (ko) * 2000-05-22 2002-04-06 김낙현 콘덴서 마이크로폰의 제조방법
US7136496B2 (en) * 2001-04-18 2006-11-14 Sonion Nederland B.V. Electret assembly for a microphone having a backplate with improved charge stability
US6937735B2 (en) * 2001-04-18 2005-08-30 SonionMicrotronic Néderland B.V. Microphone for a listening device having a reduced humidity coefficient
US7062058B2 (en) * 2001-04-18 2006-06-13 Sonion Nederland B.V. Cylindrical microphone having an electret assembly in the end cover
US8280082B2 (en) * 2002-10-08 2012-10-02 Sonion Nederland B.V. Electret assembly for a microphone having a backplate with improved charge stability
KR101276353B1 (ko) * 2011-12-09 2013-06-24 주식회사 비에스이 다기능 마이크로폰 조립체 및 그 제조방법
CN203708424U (zh) * 2013-12-30 2014-07-09 瑞声声学科技(深圳)有限公司 麦克风

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300585A (en) * 1963-09-04 1967-01-24 Northern Electric Co Self-polarized electrostatic microphone-semiconductor amplifier combination
DE1252258C2 (de) * 1965-04-13 1974-06-20 Nach dem elektrostatischen prinzip arbeitender elektroakustischer wandler und verfahren zu seiner herstellung
US3436492A (en) * 1966-01-17 1969-04-01 Northern Electric Co Field effect electroacoustic transducer
JPS5252581Y1 (cs) * 1970-10-08 1977-11-30

Also Published As

Publication number Publication date
FR2151061A1 (cs) 1973-04-13
DE2242806A1 (de) 1973-03-08
FR2151061B1 (cs) 1977-01-14
DE2242806C2 (de) 1982-07-08
GB1384418A (en) 1975-02-19
IT968373B (it) 1974-03-20
JPS4835339U (cs) 1973-04-27
US3775572A (en) 1973-11-27
JPS5221046Y2 (cs) 1977-05-14
CA946508A (en) 1974-04-30
NL177879C (nl) 1985-12-02
NL177879B (nl) 1985-07-01

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BT A notification was added to the application dossier and made available to the public
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V4 Discontinued because of reaching the maximum lifetime of a patent