BE479727A - - Google Patents
Info
- Publication number
- BE479727A BE479727A BE479727DA BE479727A BE 479727 A BE479727 A BE 479727A BE 479727D A BE479727D A BE 479727DA BE 479727 A BE479727 A BE 479727A
- 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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2298139A GB533360A (en) | 1939-08-09 | 1939-08-09 | Improvements in or relating to electric signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE479727A true BE479727A (en) |
Family
ID=10188166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE479727D BE479727A (en) | 1939-08-09 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE479727A (en) |
| GB (1) | GB533360A (en) |
-
0
- BE BE479727D patent/BE479727A/xx unknown
-
1939
- 1939-08-09 GB GB2298139A patent/GB533360A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB533360A (en) | 1941-02-12 |