BE469534A - - Google Patents
Info
- Publication number
- BE469534A BE469534A BE469534DA BE469534A BE 469534 A BE469534 A BE 469534A BE 469534D A BE469534D A BE 469534DA BE 469534 A BE469534 A BE 469534A
- 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
- H04R25/00—Electric hearing aids
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
- H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US535753XA | 1939-06-20 | 1939-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE469534A true BE469534A (ja�@�@) |
Family
ID=21985195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE469534D BE469534A (ja�@�@) | 1939-06-20 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE469534A (ja�@�@) |
| FR (1) | FR865911A (ja�@�@) |
| GB (1) | GB535753A (ja�@�@) |
-
0
- BE BE469534D patent/BE469534A/xx unknown
-
1940
- 1940-05-21 GB GB9004/40A patent/GB535753A/en not_active Expired
- 1940-05-31 FR FR865911D patent/FR865911A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB535753A (en) | 1941-04-21 |
| FR865911A (fr) | 1941-06-09 |