BE487179A - - Google Patents
Info
- Publication number
- BE487179A BE487179A BE487179DA BE487179A BE 487179 A BE487179 A BE 487179A BE 487179D A BE487179D A BE 487179DA BE 487179 A BE487179 A BE 487179A
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
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 |
|---|---|---|---|
| DK979919X | 1948-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE487179A true BE487179A (US07655688-20100202-C00086.png) |
Family
ID=8156368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE487179D BE487179A (US07655688-20100202-C00086.png) | 1948-02-04 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE487179A (US07655688-20100202-C00086.png) |
| FR (1) | FR979919A (US07655688-20100202-C00086.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1087170B (de) * | 1955-02-19 | 1960-08-18 | Akustische | Lautsprecheranordnung fuer Rundfunk- und Fernsehgeraete mit mindestens einem Tieftonlautsprecher und mindestens einem Hochtonsystem |
-
0
- BE BE487179D patent/BE487179A/xx unknown
-
1949
- 1949-02-03 FR FR979919D patent/FR979919A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR979919A (fr) | 1951-05-07 |
