BE635450A - - Google Patents
Info
- Publication number
- BE635450A BE635450A BE635450DA BE635450A BE 635450 A BE635450 A BE 635450A BE 635450D A BE635450D A BE 635450DA BE 635450 A BE635450 A BE 635450A
- Authority
- BE
- Belgium
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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
-
- 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
- H04R19/04—Microphones
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- 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 |
|---|---|---|---|
| GB28977/62A GB1003835A (en) | 1962-07-27 | 1962-07-27 | Improvements in or relating to condenser microphones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE635450A true BE635450A (en) | 1900-01-01 |
Family
ID=10284266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE635450D BE635450A (en) | 1962-07-27 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3310628A (en) |
| BE (1) | BE635450A (en) |
| CH (1) | CH423884A (en) |
| FR (1) | FR1365676A (en) |
| GB (1) | GB1003835A (en) |
| NL (1) | NL295905A (en) |
| SE (1) | SE310190B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT239339B (en) * | 1963-05-20 | 1965-03-25 | Akg Akustische Kino Geraete | Circuit arrangement for suppressing noise in high-frequency circuits for condenser microphones |
| AT239340B (en) * | 1963-05-20 | 1965-03-25 | Akg Akustische Kino Geraete | High frequency circuit for condenser microphones |
| AT239341B (en) * | 1963-05-20 | 1965-03-25 | Akg Akustische Kino Geraete | Demodulator circuit for condenser microphones in high frequency circuit |
| DE1240128B (en) * | 1964-08-01 | 1967-05-11 | Sennheiser Electronic | High-frequency capacitor microphone with an oscillator and a coupled resonant circuit that is tuned to its frequency and whose capacitance is formed by the transducer element |
| US3440348A (en) * | 1965-06-26 | 1969-04-22 | Shell Oil Co | Multivibrator capacitor microphone circuit |
| US3573399A (en) * | 1968-08-14 | 1971-04-06 | Bell Telephone Labor Inc | Directional microphone |
| US3573400A (en) * | 1968-08-14 | 1971-04-06 | Bell Telephone Labor Inc | Directional microphone |
| US3777079A (en) * | 1971-10-21 | 1973-12-04 | Willco Gmbh | Directional microphone for head mounted midget hearing aids |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2219676A (en) * | 1937-12-15 | 1940-10-29 | Alfred W Barber | Light modulation system |
| US2184247A (en) * | 1937-12-20 | 1939-12-19 | S N Shure | Microphone apparatus |
| CH281609A (en) * | 1949-02-22 | 1952-03-15 | Rundfunk Nordwestdeutscher | Method for changing the directional characteristic of a sound receiver consisting of several individual microphones |
| US2787671A (en) * | 1952-10-06 | 1957-04-02 | Schall Technik Dr Ing Karl Sch | Microphone arrangement |
| US2920140A (en) * | 1958-03-14 | 1960-01-05 | Rca Corp | Electrostatic microphone circuits |
| GB832276A (en) * | 1958-12-02 | 1960-04-06 | Standard Telephones Cables Ltd | Improvements in or relating to electro-acoustic transducers |
-
0
- BE BE635450D patent/BE635450A/xx unknown
- NL NL295905D patent/NL295905A/xx unknown
-
1962
- 1962-07-27 GB GB28977/62A patent/GB1003835A/en not_active Expired
-
1963
- 1963-06-12 SE SE6471/63A patent/SE310190B/xx unknown
- 1963-07-24 CH CH920263A patent/CH423884A/en unknown
- 1963-07-25 FR FR942656A patent/FR1365676A/en not_active Expired
- 1963-07-26 US US297841A patent/US3310628A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB1003835A (en) | 1965-09-08 |
| US3310628A (en) | 1967-03-21 |
| FR1365676A (en) | 1964-07-03 |
| CH423884A (en) | 1966-11-15 |
| NL295905A (en) | 1900-01-01 |
| SE310190B (en) | 1969-04-21 |