FR2186799B1 - - Google Patents
Info
- Publication number
- FR2186799B1 FR2186799B1 FR7208419A FR7208419A FR2186799B1 FR 2186799 B1 FR2186799 B1 FR 2186799B1 FR 7208419 A FR7208419 A FR 7208419A FR 7208419 A FR7208419 A FR 7208419A FR 2186799 B1 FR2186799 B1 FR 2186799B1
- Authority
- FR
- France
- 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
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
- H04R19/013—Electrostatic transducers characterised by the use of electrets for loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1382871A JPS5632839B1 (fr) | 1971-03-11 | 1971-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2186799A1 FR2186799A1 (fr) | 1974-01-11 |
| FR2186799B1 true FR2186799B1 (fr) | 1975-03-07 |
Family
ID=11844119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7208419A Expired FR2186799B1 (fr) | 1971-03-11 | 1972-03-10 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3833770A (fr) |
| JP (1) | JPS5632839B1 (fr) |
| CA (1) | CA947856A (fr) |
| DE (1) | DE2211729A1 (fr) |
| FR (1) | FR2186799B1 (fr) |
| GB (1) | GB1387453A (fr) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7313455A (nl) * | 1973-10-01 | 1975-04-03 | Philips Nv | Mikrofoon met elektrostatische capsule. |
| US3921167A (en) * | 1974-06-14 | 1975-11-18 | Ibm | Capacitive circuitboard |
| US4331840A (en) * | 1980-02-22 | 1982-05-25 | Lectret S.A. | Electret transducer with tapered acoustic chamber |
| NL8004351A (nl) * | 1980-07-30 | 1982-03-01 | Philips Nv | Elektreetomzetter. |
| JPH02149199A (ja) * | 1988-11-30 | 1990-06-07 | Matsushita Electric Ind Co Ltd | エレクトレットコンデンサマイクロホン |
| US8559660B2 (en) * | 2007-07-12 | 2013-10-15 | Industrial Technology Research Institute | Electrostatic electroacoustic transducers |
| TWI343756B (en) * | 2009-08-10 | 2011-06-11 | Ind Tech Res Inst | Flat loudspeaker structure |
| US8184833B2 (en) * | 2007-12-14 | 2012-05-22 | Sony Ericsson Mobile Communications Ab | Electrostatic speaker arrangement for a mobile device |
| US20100079379A1 (en) * | 2008-09-26 | 2010-04-01 | Sony Ericsson Mobile Communications Ab | Portable communication device having an electroluminescent driven haptic keypad |
| WO2019218697A1 (fr) * | 2018-05-14 | 2019-11-21 | Dong Yaobin | Générateur électronique, dispositif de génération de charge nette et haut-parleur électrostatique |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3008013A (en) * | 1954-07-20 | 1961-11-07 | Ferranti Ltd | Electrostatic loudspeakers |
| US3160715A (en) * | 1960-11-15 | 1964-12-08 | Gussing Nils Torsten Alson | Electrostatic loudspeakers |
| US3118022A (en) * | 1961-08-07 | 1964-01-14 | Bell Telephone Labor Inc | Electroacoustic transducer |
| FR1354631A (fr) * | 1962-05-22 | 1964-03-06 | Western Electric Co | Transducteur électroacoustique |
-
1971
- 1971-03-11 JP JP1382871A patent/JPS5632839B1/ja active Pending
-
1972
- 1972-02-29 US US00230435A patent/US3833770A/en not_active Expired - Lifetime
- 1972-02-29 GB GB939772A patent/GB1387453A/en not_active Expired
- 1972-03-08 CA CA136,566A patent/CA947856A/en not_active Expired
- 1972-03-10 DE DE19722211729 patent/DE2211729A1/de active Pending
- 1972-03-10 FR FR7208419A patent/FR2186799B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2211729A1 (de) | 1972-09-28 |
| US3833770A (en) | 1974-09-03 |
| CA947856A (en) | 1974-05-21 |
| GB1387453A (en) | 1975-03-19 |
| JPS5632839B1 (fr) | 1981-07-30 |
| FR2186799A1 (fr) | 1974-01-11 |