BE667029A - - Google Patents
Info
- Publication number
- BE667029A BE667029A BE667029A BE667029A BE667029A BE 667029 A BE667029 A BE 667029A BE 667029 A BE667029 A BE 667029A BE 667029 A BE667029 A BE 667029A BE 667029 A BE667029 A BE 667029A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE15527 | 1965-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE667029A true BE667029A (en:Method) | 1965-11-16 |
Family
ID=3839875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE667029A BE667029A (en:Method) | 1965-07-16 | 1965-07-16 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE667029A (en:Method) |
| FR (1) | FR1502710A (en:Method) |
-
1965
- 1965-07-16 BE BE667029A patent/BE667029A/xx unknown
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1966
- 1966-07-15 FR FR69547A patent/FR1502710A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1502710A (fr) | 1967-11-24 |