NL64978C - - Google Patents
Info
- Publication number
- NL64978C NL64978C NL64978DA NL64978C NL 64978 C NL64978 C NL 64978C NL 64978D A NL64978D A NL 64978DA NL 64978 C NL64978 C NL 64978C
- Authority
- NL
- Netherlands
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
- H04R11/00—Transducers of moving-armature or moving-core type
-
- 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
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
- H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Filters And Equalizers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL628587X | 1943-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL64978C true NL64978C (sl) |
Family
ID=19788659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL64978D NL64978C (sl) | 1943-02-03 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2480052A (sl) |
| GB (1) | GB628587A (sl) |
| NL (1) | NL64978C (sl) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2830283A (en) * | 1950-04-18 | 1958-04-08 | Massa Frank | Directional characteristics of electroacoustic transducers and method for utilizing the same |
| US3524017A (en) * | 1966-03-23 | 1970-08-11 | Ampex | Record amplifier-driver for continuously driving analog recorder heads with an optimum record current during the life of the head |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1792859A (en) * | 1926-01-27 | 1931-02-17 | Columbia Phonograph Co Inc | Sound-recording apparatus |
| US1870778A (en) * | 1928-11-20 | 1932-08-09 | Westinghouse Electric & Mfg Co | Sound recording method |
| US2218399A (en) * | 1937-08-03 | 1940-10-15 | Bel Clarence J Le | Compensating network |
| US2212389A (en) * | 1938-09-29 | 1940-08-20 | Astatic Microphone Lab Inc | Sound control apparatus |
| US2285079A (en) * | 1939-03-07 | 1942-06-02 | Lorenz C Ag | Electromagnetic sound-reproducing device |
| US2251300A (en) * | 1940-02-09 | 1941-08-05 | Radio Dev And Res Corp | Telegraphone and like apparatus |
-
0
- NL NL64978D patent/NL64978C/xx active
-
1946
- 1946-07-16 US US684083A patent/US2480052A/en not_active Expired - Lifetime
- 1946-10-10 GB GB30307/46A patent/GB628587A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2480052A (en) | 1949-08-23 |
| GB628587A (en) | 1949-08-31 |