BE478613A - - Google Patents
Info
- Publication number
- BE478613A BE478613A BE478613DA BE478613A BE 478613 A BE478613 A BE 478613A BE 478613D A BE478613D A BE 478613DA BE 478613 A BE478613 A BE 478613A
- 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
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR934810T | 1946-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE478613A true BE478613A (xx) |
Family
ID=9456418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE478613D BE478613A (xx) | 1946-09-20 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE478613A (xx) |
| FR (1) | FR934810A (xx) |
| GB (1) | GB641668A (xx) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE943413C (de) * | 1951-07-29 | 1956-05-17 | Siemens Ag | Lautsprecheranordnung, vorzugsweise mit Trichter |
| NL191082B (nl) * | 1953-10-02 | Mirowski Mieczyslaw | Implanteerbaar automatisch cardioverter/defibrillatorstelsel. | |
| US2847081A (en) * | 1955-04-25 | 1958-08-12 | Electronic Reproducers Inc | Acoustical enclosure to simulate organ tones |
| US3080012A (en) * | 1958-09-26 | 1963-03-05 | Columbia Broadcasting Syst Inc | Stereophonic loudspeaker arrays |
-
0
- BE BE478613D patent/BE478613A/xx unknown
-
1946
- 1946-09-20 FR FR934810D patent/FR934810A/fr not_active Expired
-
1947
- 1947-09-19 GB GB25537/47A patent/GB641668A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB641668A (en) | 1950-08-16 |
| FR934810A (fr) | 1948-06-02 |