DK450682A - Electret Microphone - Google Patents

Electret Microphone Download PDF

Info

Publication number
DK450682A
DK450682A DK450682A DK450682A DK450682A DK 450682 A DK450682 A DK 450682A DK 450682 A DK450682 A DK 450682A DK 450682 A DK450682 A DK 450682A DK 450682 A DK450682 A DK 450682A
Authority
DK
Denmark
Prior art keywords
electret microphone
electret
microphone
Prior art date
Application number
DK450682A
Other languages
Danish (da)
Other versions
DK153619B (en
DK153619C (en
Inventor
Guy John Chaput
Edward Matthew Sich
Beverley William Thomas Gumb
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of DK450682A publication Critical patent/DK450682A/en
Publication of DK153619B publication Critical patent/DK153619B/en
Application granted granted Critical
Publication of DK153619C publication Critical patent/DK153619C/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
    • 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
    • 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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
DK450682A 1981-10-19 1982-10-12 Electret Microphone DK153619C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000388183A CA1165859A (en) 1981-10-19 1981-10-19 Electret microphone shield
CA388183 1981-10-19

Publications (3)

Publication Number Publication Date
DK450682A true DK450682A (en) 1983-04-20
DK153619B DK153619B (en) 1988-08-01
DK153619C DK153619C (en) 1988-12-19

Family

ID=4121192

Family Applications (1)

Application Number Title Priority Date Filing Date
DK450682A DK153619C (en) 1981-10-19 1982-10-12 Electret Microphone

Country Status (7)

Country Link
EP (1) EP0077615B1 (en)
JP (1) JPS5881000A (en)
KR (1) KR880000963B1 (en)
CA (1) CA1165859A (en)
DE (1) DE3270879D1 (en)
DK (1) DK153619C (en)
IE (1) IE53590B1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2218298A (en) * 1987-11-28 1989-11-08 Anthony David Heyes An ultra-sonic pulse-echo ranging device
DE19715365C2 (en) * 1997-04-11 1999-03-25 Sennheiser Electronic Condenser microphone
US7439616B2 (en) 2000-11-28 2008-10-21 Knowles Electronics, Llc Miniature silicon condenser microphone
US7434305B2 (en) 2000-11-28 2008-10-14 Knowles Electronics, Llc. Method of manufacturing a microphone
US8617934B1 (en) 2000-11-28 2013-12-31 Knowles Electronics, Llc Methods of manufacture of top port multi-part surface mount silicon condenser microphone packages
US7166910B2 (en) 2000-11-28 2007-01-23 Knowles Electronics Llc Miniature silicon condenser microphone
US6781231B2 (en) 2002-09-10 2004-08-24 Knowles Electronics Llc Microelectromechanical system package with environmental and interference shield
JP4452584B2 (en) * 2004-08-31 2010-04-21 株式会社オーディオテクニカ Condenser microphone
DE102005008512B4 (en) 2005-02-24 2016-06-23 Epcos Ag Electrical module with a MEMS microphone
DE102005008511B4 (en) 2005-02-24 2019-09-12 Tdk Corporation MEMS microphone
DE102005053765B4 (en) 2005-11-10 2016-04-14 Epcos Ag MEMS package and method of manufacture
DE102005053767B4 (en) 2005-11-10 2014-10-30 Epcos Ag MEMS microphone, method of manufacture and method of installation
KR20080011066A (en) * 2006-07-27 2008-01-31 스타 마이크로닉스 컴퍼니 리미티드 Housing for microphone, and condenser microphone
US7894622B2 (en) 2006-10-13 2011-02-22 Merry Electronics Co., Ltd. Microphone
CN103999484B (en) 2011-11-04 2017-06-30 美商楼氏电子有限公司 As the embedded-type electric medium and manufacture method of the barrier in acoustic equipment
US9078063B2 (en) 2012-08-10 2015-07-07 Knowles Electronics, Llc Microphone assembly with barrier to prevent contaminant infiltration
US9794661B2 (en) 2015-08-07 2017-10-17 Knowles Electronics, Llc Ingress protection for reducing particle infiltration into acoustic chamber of a MEMS microphone package

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787642A (en) * 1971-09-27 1974-01-22 Gte Automatic Electric Lab Inc Electrostatic transducer having resilient electrode
US3778561A (en) * 1972-06-21 1973-12-11 Bell Canada Northern Electric Electret microphone
JPS5419172B2 (en) * 1973-07-23 1979-07-13
JPS5717013Y2 (en) * 1977-07-11 1982-04-09
US4188513A (en) * 1978-11-03 1980-02-12 Northern Telecom Limited Electret microphone with simplified electrical connections by printed circuit board mounting

Also Published As

Publication number Publication date
EP0077615B1 (en) 1986-04-30
IE53590B1 (en) 1988-12-21
KR840002387A (en) 1984-06-25
KR880000963B1 (en) 1988-06-04
JPS5881000A (en) 1983-05-16
IE822516L (en) 1983-04-19
DK153619B (en) 1988-08-01
CA1165859A (en) 1984-04-17
DK153619C (en) 1988-12-19
EP0077615A1 (en) 1983-04-27
DE3270879D1 (en) 1986-06-05

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Legal Events

Date Code Title Description
PBP Patent lapsed