BE333007A - - Google Patents
Info
- Publication number
- BE333007A BE333007A BE333007DA BE333007A BE 333007 A BE333007 A BE 333007A BE 333007D A BE333007D A BE 333007DA BE 333007 A BE333007 A BE 333007A
- 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB613059X | 1925-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE333007A true BE333007A (nl) |
Family
ID=10486848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE333007D BE333007A (nl) | 1925-04-04 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE333007A (nl) |
| FR (1) | FR613059A (nl) |
-
0
- BE BE333007D patent/BE333007A/xx unknown
-
1926
- 1926-03-20 FR FR613059D patent/FR613059A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR613059A (fr) | 1926-11-08 |