DK450682A - Electret Microphone - Google Patents
Electret Microphone Download PDFInfo
- 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
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA388183 | 1981-10-19 | ||
CA000388183A CA1165859A (en) | 1981-10-19 | 1981-10-19 | Electret microphone shield |
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)
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 |
US7166910B2 (en) | 2000-11-28 | 2007-01-23 | Knowles Electronics Llc | Miniature silicon condenser 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 |
US7434305B2 (en) | 2000-11-28 | 2008-10-14 | Knowles Electronics, Llc. | Method of manufacturing a 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 |
DE102005008511B4 (en) | 2005-02-24 | 2019-09-12 | Tdk Corporation | MEMS microphone |
DE102005008512B4 (en) | 2005-02-24 | 2016-06-23 | Epcos Ag | Electrical module with a MEMS microphone |
DE102005053767B4 (en) | 2005-11-10 | 2014-10-30 | Epcos Ag | MEMS microphone, method of manufacture and method of installation |
DE102005053765B4 (en) | 2005-11-10 | 2016-04-14 | Epcos Ag | MEMS package and method of manufacture |
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 |
US9374643B2 (en) | 2011-11-04 | 2016-06-21 | Knowles Electronics, Llc | Embedded dielectric as a barrier in an acoustic device and method of manufacture |
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)
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 |
-
1981
- 1981-10-19 CA CA000388183A patent/CA1165859A/en not_active Expired
-
1982
- 1982-09-30 DE DE8282305196T patent/DE3270879D1/en not_active Expired
- 1982-09-30 EP EP82305196A patent/EP0077615B1/en not_active Expired
- 1982-10-12 DK DK450682A patent/DK153619C/en not_active IP Right Cessation
- 1982-10-18 KR KR8204689A patent/KR880000963B1/en active
- 1982-10-18 JP JP57181516A patent/JPS5881000A/en active Pending
- 1982-10-18 IE IE2516/82A patent/IE53590B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
IE53590B1 (en) | 1988-12-21 |
DE3270879D1 (en) | 1986-06-05 |
JPS5881000A (en) | 1983-05-16 |
EP0077615B1 (en) | 1986-04-30 |
EP0077615A1 (en) | 1983-04-27 |
KR840002387A (en) | 1984-06-25 |
DK153619C (en) | 1988-12-19 |
KR880000963B1 (en) | 1988-06-04 |
CA1165859A (en) | 1984-04-17 |
IE822516L (en) | 1983-04-19 |
DK153619B (en) | 1988-08-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |