FR2474800B3 - - Google Patents
Info
- Publication number
- FR2474800B3 FR2474800B3 FR8101781A FR8101781A FR2474800B3 FR 2474800 B3 FR2474800 B3 FR 2474800B3 FR 8101781 A FR8101781 A FR 8101781A FR 8101781 A FR8101781 A FR 8101781A FR 2474800 B3 FR2474800 B3 FR 2474800B3
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- 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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- 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
- H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT46808/80A IT1154054B (en) | 1980-01-30 | 1980-01-30 | ELECTROACOUSTIC TRANSDUCER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2474800A1 FR2474800A1 (en) | 1981-07-31 |
| FR2474800B3 true FR2474800B3 (en) | 1983-11-18 |
Family
ID=11258965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8101781A Granted FR2474800A1 (en) | 1980-01-30 | 1981-01-30 | MEMBRANE ELECTRO-ACOUSTIC TRANSDUCER IN THE FORM OF A SPHERICAL RING |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE3102977A1 (en) |
| ES (1) | ES498869A0 (en) |
| FR (1) | FR2474800A1 (en) |
| GB (1) | GB2070389A (en) |
| IT (1) | IT1154054B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878148A (en) * | 1996-02-29 | 1999-03-02 | Alexandrov; Svetlomir | Compression driver |
| DE19618898A1 (en) * | 1996-05-10 | 1997-11-13 | Nokia Deutschland Gmbh | speaker |
| TWI559732B (en) * | 2013-05-30 | 2016-11-21 | 舒爾獲得控股公司 | Stabilizer for microphone diaphragm |
-
1980
- 1980-01-30 IT IT46808/80A patent/IT1154054B/en active
-
1981
- 1981-01-28 ES ES498869A patent/ES498869A0/en active Granted
- 1981-01-29 DE DE19813102977 patent/DE3102977A1/en not_active Withdrawn
- 1981-01-30 GB GB8102900A patent/GB2070389A/en not_active Withdrawn
- 1981-01-30 FR FR8101781A patent/FR2474800A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT8046808A1 (en) | 1981-07-30 |
| FR2474800A1 (en) | 1981-07-31 |
| GB2070389A (en) | 1981-09-03 |
| ES8202234A1 (en) | 1982-01-01 |
| ES498869A0 (en) | 1982-01-01 |
| DE3102977A1 (en) | 1981-11-26 |
| IT1154054B (en) | 1987-01-21 |
| IT8046808A0 (en) | 1980-01-30 |