BE636959A - - Google Patents
Info
- Publication number
- BE636959A BE636959A BE636959DA BE636959A BE 636959 A BE636959 A BE 636959A BE 636959D A BE636959D A BE 636959DA BE 636959 A BE636959 A BE 636959A
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL282923A NL282923A (en) | 1962-09-05 | 1962-09-05 | Microphone combination with acoustic obstacle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE636959A true BE636959A (en) | 1964-03-03 |
Family
ID=19754084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE636959D BE636959A (en) | 1962-09-05 | 1963-09-03 |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT243344B (en) |
| BE (1) | BE636959A (en) |
| DE (1) | DE1190043B (en) |
| FR (1) | FR1367984A (en) |
| GB (1) | GB1054796A (en) |
| NL (1) | NL282923A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1279754B (en) * | 1965-06-14 | 1968-10-10 | Akg Akustische Kino Geraete | Circuit arrangement for an electrodynamic microphone, the frequency response curve of which drops off proportionally strongly at the low frequencies |
| GB2157128B (en) * | 1984-03-27 | 1987-10-14 | Sony Corp | Microphone apparatus |
| US4742548A (en) * | 1984-12-20 | 1988-05-03 | American Telephone And Telegraph Company | Unidirectional second order gradient microphone |
| US4675906A (en) * | 1984-12-20 | 1987-06-23 | At&T Company, At&T Bell Laboratories | Second order toroidal microphone |
-
1962
- 1962-09-05 NL NL282923A patent/NL282923A/en unknown
-
1963
- 1963-08-31 DE DEN23686A patent/DE1190043B/en active Pending
- 1963-09-02 GB GB3459563A patent/GB1054796A/en not_active Expired
- 1963-09-02 FR FR946283A patent/FR1367984A/en not_active Expired
- 1963-09-02 AT AT705563A patent/AT243344B/en active
- 1963-09-03 BE BE636959D patent/BE636959A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1190043B (en) | 1965-04-01 |
| NL282923A (en) | 1965-01-11 |
| AT243344B (en) | 1965-11-10 |
| FR1367984A (en) | 1964-07-24 |
| GB1054796A (en) | 1967-01-11 |