BE509057A - - Google Patents
Info
- Publication number
- BE509057A BE509057A BE509057DA BE509057A BE 509057 A BE509057 A BE 509057A BE 509057D A BE509057D A BE 509057DA BE 509057 A BE509057 A BE 509057A
- Authority
- BE
- Belgium
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K15/00—Acoustics not otherwise provided for
- G10K15/02—Synthesis of acoustic waves
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/04—Indicating the time of the day
- G04C21/12—Indicating the time of the day by electro-acoustic means
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0033—Recording/reproducing or transmission of music for electrophonic musical instruments
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2744583X | 1951-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE509057A true BE509057A (xx) |
Family
ID=7997531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE509057D BE509057A (xx) | 1951-02-08 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2744583A (xx) |
| BE (1) | BE509057A (xx) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1508432A (en) * | 1921-11-18 | 1924-09-16 | Western Electric Co | Sound recording and reproducing apparatus |
| US1748225A (en) * | 1925-11-16 | 1930-02-25 | Edward G Hoch | Input and output amplifying unit |
| US1855149A (en) * | 1927-04-13 | 1932-04-19 | Jones W Bartlett | Method and means for the ventriloquial production of sound |
| GB447099A (en) * | 1935-08-09 | 1936-05-12 | John Compton | Improvements in or relating to electric musical instruments |
| US2489653A (en) * | 1945-07-09 | 1949-11-29 | Donald J Leslie | Rotatable tremulant sound producer |
| GB551364A (en) * | 1942-01-14 | 1943-02-18 | Philips Nv | Improvements in or relating to devices for the stereophonic transmission and reproduction of sound |
| US2490466A (en) * | 1944-07-19 | 1949-12-06 | Rca Corp | Loudspeaker diaphragm support comprising plural compliant members |
| US2507385A (en) * | 1945-03-22 | 1950-05-09 | Rca Corp | Magnetic sound recording and reproducing apparatus |
-
0
- BE BE509057D patent/BE509057A/xx unknown
-
1952
- 1952-01-09 US US265692A patent/US2744583A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2744583A (en) | 1956-05-08 |