GB495124A - Improvements in or relating to the recording of sound and like oscillations - Google Patents
Improvements in or relating to the recording of sound and like oscillationsInfo
- Publication number
- GB495124A GB495124A GB17378/37A GB1737837A GB495124A GB 495124 A GB495124 A GB 495124A GB 17378/37 A GB17378/37 A GB 17378/37A GB 1737837 A GB1737837 A GB 1737837A GB 495124 A GB495124 A GB 495124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- speech
- june
- coil
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Seasonings (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
495,124. Phonographic recorders. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 22, 1937, No. 17378. Convention date, June 25, 1936. [Class 40 (iv)] An electromechanical recording apparatus for recording sound on the constant-velocity principle is provided with an armature having a high natural frequency, greater than 1000 cycles per sec., in order to obtain greater amplitudes at higher frequencies and the armature 8 is surrounded by one or more short-circuited damping windings 10, or the speech-coil 9 is wound on a former of metal, e.g. brass, iron, or copper in order that the desired inverse relation between frequency and amplitude may be obtained. The Specification as open to inspection under Sect. 91 includes an arrangement, Fig. 3 (Cancelled) (not shown), in which a resistance, capacity or both is/are connected across the terminals of the speech-coil. This subject-matter does not appear in 'the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE495124X | 1936-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495124A true GB495124A (en) | 1938-11-08 |
Family
ID=6544836
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17378/37A Expired GB495124A (en) | 1936-06-25 | 1937-06-22 | Improvements in or relating to the recording of sound and like oscillations |
| GB15912/38A Expired GB496928A (en) | 1936-06-25 | 1937-06-22 | Improvements in or relating to the recording of sound and like oscillations |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15912/38A Expired GB496928A (en) | 1936-06-25 | 1937-06-22 | Improvements in or relating to the recording of sound and like oscillations |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR823530A (en) |
| GB (2) | GB495124A (en) |
-
1937
- 1937-06-22 GB GB17378/37A patent/GB495124A/en not_active Expired
- 1937-06-22 GB GB15912/38A patent/GB496928A/en not_active Expired
- 1937-06-24 FR FR823530D patent/FR823530A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB496928A (en) | 1938-12-08 |
| FR823530A (en) | 1938-01-21 |
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