FR2563959B1 - Perfectionnements aux transducteurs electro-acoustiques a electret - Google Patents
Perfectionnements aux transducteurs electro-acoustiques a electretInfo
- Publication number
- FR2563959B1 FR2563959B1 FR8406987A FR8406987A FR2563959B1 FR 2563959 B1 FR2563959 B1 FR 2563959B1 FR 8406987 A FR8406987 A FR 8406987A FR 8406987 A FR8406987 A FR 8406987A FR 2563959 B1 FR2563959 B1 FR 2563959B1
- Authority
- FR
- France
- Prior art keywords
- electre
- electret
- acoustic transducers
- transducers
- acoustic
- 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
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Multimedia (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8406987A FR2563959B1 (fr) | 1984-05-04 | 1984-05-04 | Perfectionnements aux transducteurs electro-acoustiques a electret |
US06/728,768 US4626729A (en) | 1984-05-04 | 1985-04-30 | Electroacoustic piezoelectric transducers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8406987A FR2563959B1 (fr) | 1984-05-04 | 1984-05-04 | Perfectionnements aux transducteurs electro-acoustiques a electret |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2563959A1 FR2563959A1 (fr) | 1985-11-08 |
FR2563959B1 true FR2563959B1 (fr) | 1990-08-10 |
Family
ID=9303713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8406987A Expired - Lifetime FR2563959B1 (fr) | 1984-05-04 | 1984-05-04 | Perfectionnements aux transducteurs electro-acoustiques a electret |
Country Status (2)
Country | Link |
---|---|
US (1) | US4626729A (fr) |
FR (1) | FR2563959B1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5014322A (en) * | 1987-03-04 | 1991-05-07 | Hosiden Electronics Co., Ltd. | Diaphragm unit of a condenser microphone, a method of fabricating the same, and a condenser microphone |
US4835435A (en) * | 1988-01-19 | 1989-05-30 | Hewlett-Packard Company | Simple, sensitive, frequency-tuned drop detector |
FR2643771A1 (fr) * | 1989-02-27 | 1990-08-31 | Horlogerie Photograph Fse | Capsule piezoelectrique a organes de maintien elastiques conducteurs |
US5272758A (en) * | 1991-09-09 | 1993-12-21 | Hosiden Corporation | Electret condenser microphone unit |
DE69333058T2 (de) * | 1992-10-27 | 2003-12-24 | Tdk Corp | Piezoelektrischer Wandler |
US5574794A (en) * | 1995-01-19 | 1996-11-12 | Earmark, Inc. | Microphone assembly for adhesive attachment to a vibratory surface |
FI105880B (fi) * | 1998-06-18 | 2000-10-13 | Nokia Mobile Phones Ltd | Mikromekaanisen mikrofonin kiinnitys |
US6638627B2 (en) * | 2000-12-13 | 2003-10-28 | Rochester Institute Of Technology | Method for electrostatic force bonding and a system thereof |
WO2002073673A1 (fr) | 2001-03-13 | 2002-09-19 | Rochester Institute Of Technology | Commutateur micro-electromecanique et un procede de sa mise en oeuvre et de sa fabrication |
US7195393B2 (en) | 2001-05-31 | 2007-03-27 | Rochester Institute Of Technology | Micro fluidic valves, agitators, and pumps and methods thereof |
US7211923B2 (en) | 2001-10-26 | 2007-05-01 | Nth Tech Corporation | Rotational motion based, electrostatic power source and methods thereof |
US7378775B2 (en) | 2001-10-26 | 2008-05-27 | Nth Tech Corporation | Motion based, electrostatic power source and methods thereof |
US7217582B2 (en) | 2003-08-29 | 2007-05-15 | Rochester Institute Of Technology | Method for non-damaging charge injection and a system thereof |
US7287328B2 (en) | 2003-08-29 | 2007-10-30 | Rochester Institute Of Technology | Methods for distributed electrode injection |
US8581308B2 (en) | 2004-02-19 | 2013-11-12 | Rochester Institute Of Technology | High temperature embedded charge devices and methods thereof |
CN101611538A (zh) * | 2007-01-12 | 2009-12-23 | 日本电气株式会社 | 压电致动器和电子装置 |
US8081784B2 (en) * | 2007-09-04 | 2011-12-20 | Industrial Technology Research Institute | Electrostatic electroacoustic transducers |
KR101805372B1 (ko) * | 2008-11-10 | 2017-12-07 | 코넬 유니버시티 | 자가-발전형 압전-표면 탄성파 장치 및 방법 |
DE102019124595A1 (de) * | 2019-09-12 | 2021-03-18 | USound GmbH | Verfahren zum Herstellen einer Wandlereinheit |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB334605A (en) * | 1929-06-08 | 1930-09-08 | Vogt Hans | Improvements in or relating to diaphragms for loud speakers, telephones, microphones and the like |
US3118022A (en) * | 1961-08-07 | 1964-01-14 | Bell Telephone Labor Inc | Electroacoustic transducer |
JPS4926890B1 (fr) * | 1970-12-04 | 1974-07-12 | ||
US3663768A (en) * | 1971-01-15 | 1972-05-16 | Northern Electric Co | Electret transducer |
JPS5121334B2 (fr) * | 1971-08-27 | 1976-07-01 | ||
DE2207867B2 (de) * | 1972-02-19 | 1978-02-02 | Sennheiser Electronic Kg, 3002 Wedemark | Elektretmembran |
GB1515287A (en) * | 1974-05-30 | 1978-06-21 | Plessey Co Ltd | Piezoelectric transducers |
JPS5427238B2 (fr) * | 1974-12-13 | 1979-09-08 | ||
FR2464005A1 (fr) * | 1979-08-21 | 1981-02-27 | Thomson Csf | Transducteur piezo-electrique en materiau polymere et son procede de fabrication |
FR2473242A1 (fr) * | 1980-01-08 | 1981-07-10 | Thomson Csf | Transducteur electroacoustique a dome actif |
FR2477822A1 (fr) * | 1980-03-04 | 1981-09-11 | Thomson Csf | Transducteur electromecanique a suspension active et son procede de fabrication |
FR2511570A1 (fr) * | 1981-08-11 | 1983-02-18 | Thomson Csf | Transducteur electroacoustique a polymere piezoelectrique |
-
1984
- 1984-05-04 FR FR8406987A patent/FR2563959B1/fr not_active Expired - Lifetime
-
1985
- 1985-04-30 US US06/728,768 patent/US4626729A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4626729A (en) | 1986-12-02 |
FR2563959A1 (fr) | 1985-11-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licences | ||
ST | Notification of lapse |