BE377735A - - Google Patents
Info
- Publication number
- BE377735A BE377735A BE377735DA BE377735A BE 377735 A BE377735 A BE 377735A BE 377735D A BE377735D A BE 377735DA BE 377735 A BE377735 A BE 377735A
- 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)
- Details Of Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT384973X | 1930-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE377735A true BE377735A (en) |
Family
ID=11246049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE377735D BE377735A (en) | 1930-04-02 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE377735A (en) |
| FR (1) | FR715266A (en) |
| GB (1) | GB384973A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1012641B (en) * | 1954-04-27 | 1957-07-25 | Akg Akustische Kino Geraete | Arrangement at sound transducers to smooth the frequency characteristics |
| US3142353A (en) * | 1962-10-25 | 1964-07-28 | Carmine V Todisco | Speaker enclosure |
| FR2459599A1 (en) * | 1979-06-14 | 1981-01-09 | Lagarrigue Jacques | Loudspeaker unit using cardboard tubes - of different lengths and diameters supported coaxially in front of loudspeaker |
| DE3843050C2 (en) * | 1987-12-25 | 1998-01-15 | Yamaha Corp | Electric acoustic transducer |
-
0
- BE BE377735D patent/BE377735A/xx unknown
-
1931
- 1931-02-27 FR FR715266D patent/FR715266A/en not_active Expired
- 1931-03-06 GB GB7068/31A patent/GB384973A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR715266A (en) | 1931-11-28 |
| GB384973A (en) | 1932-12-15 |