FR2134021A1 - - Google Patents
Info
- Publication number
- FR2134021A1 FR2134021A1 FR7214191A FR7214191A FR2134021A1 FR 2134021 A1 FR2134021 A1 FR 2134021A1 FR 7214191 A FR7214191 A FR 7214191A FR 7214191 A FR7214191 A FR 7214191A FR 2134021 A1 FR2134021 A1 FR 2134021A1
- 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.)
- Granted
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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
-
- 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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for microphones
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2119912A DE2119912C3 (de) | 1971-04-23 | 1971-04-23 | Elektroakustischer Wandler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2134021A1 true FR2134021A1 (es) | 1972-12-01 |
| FR2134021B1 FR2134021B1 (es) | 1974-12-20 |
Family
ID=5805700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7214191A Expired FR2134021B1 (es) | 1971-04-23 | 1972-04-21 |
Country Status (13)
| Country | Link |
|---|---|
| AT (1) | AT309550B (es) |
| BE (1) | BE782493A (es) |
| BG (1) | BG20416A3 (es) |
| BR (1) | BR7202421D0 (es) |
| CH (1) | CH561997A5 (es) |
| DE (1) | DE2119912C3 (es) |
| FR (1) | FR2134021B1 (es) |
| GB (1) | GB1348735A (es) |
| IT (1) | IT957225B (es) |
| LU (1) | LU65199A1 (es) |
| NL (1) | NL7205093A (es) |
| SE (1) | SE374475B (es) |
| ZA (1) | ZA722574B (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2542552B1 (fr) * | 1983-03-07 | 1986-04-11 | Thomson Csf | Transducteur electroacoustique a diaphragme piezo-electrique |
| GB2164819B (en) * | 1984-09-19 | 1988-09-28 | Gibson Dawson Joseph | Microphone |
| US7065224B2 (en) * | 2001-09-28 | 2006-06-20 | Sonionmicrotronic Nederland B.V. | Microphone for a hearing aid or listening device with improved internal damping and foreign material protection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE88657C (es) * | ||||
| FR1084139A (fr) * | 1952-10-06 | 1955-01-17 | Microphone à condensateur pour réception directionnelle | |
| DE1437420A1 (de) * | 1964-07-21 | 1968-10-17 | Georg Neumann | Kondensatormikrophonkapsel |
-
1971
- 1971-04-23 DE DE2119912A patent/DE2119912C3/de not_active Expired
-
1972
- 1972-03-21 CH CH415772A patent/CH561997A5/xx not_active IP Right Cessation
- 1972-04-05 GB GB1556672A patent/GB1348735A/en not_active Expired
- 1972-04-14 NL NL7205093A patent/NL7205093A/xx unknown
- 1972-04-14 AT AT328872A patent/AT309550B/de not_active IP Right Cessation
- 1972-04-17 ZA ZA722574A patent/ZA722574B/xx unknown
- 1972-04-20 BG BG20268A patent/BG20416A3/xx unknown
- 1972-04-20 LU LU65199D patent/LU65199A1/xx unknown
- 1972-04-20 BR BR2421/72A patent/BR7202421D0/pt unknown
- 1972-04-21 FR FR7214191A patent/FR2134021B1/fr not_active Expired
- 1972-04-21 BE BE782493A patent/BE782493A/xx unknown
- 1972-04-21 IT IT7328/72A patent/IT957225B/it active
- 1972-05-24 SE SE7205377A patent/SE374475B/xx unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE88657C (es) * | ||||
| FR1084139A (fr) * | 1952-10-06 | 1955-01-17 | Microphone à condensateur pour réception directionnelle | |
| DE1437420A1 (de) * | 1964-07-21 | 1968-10-17 | Georg Neumann | Kondensatormikrophonkapsel |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2119912A1 (de) | 1972-11-09 |
| FR2134021B1 (es) | 1974-12-20 |
| AT309550B (de) | 1973-08-27 |
| LU65199A1 (es) | 1972-07-13 |
| BE782493A (fr) | 1972-10-23 |
| SE374475B (es) | 1975-03-03 |
| CH561997A5 (es) | 1975-05-15 |
| NL7205093A (es) | 1972-10-25 |
| BG20416A3 (es) | 1975-11-05 |
| GB1348735A (en) | 1974-03-20 |
| ZA722574B (en) | 1973-01-31 |
| DE2119912B2 (de) | 1974-05-16 |
| DE2119912C3 (de) | 1974-12-12 |
| BR7202421D0 (pt) | 1973-06-28 |
| IT957225B (it) | 1973-10-10 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |