GB915876A - Improvements in or relating to transducing devices for cutting or playing back from stereophonic or other twin channel gramophone records - Google Patents
Improvements in or relating to transducing devices for cutting or playing back from stereophonic or other twin channel gramophone recordsInfo
- Publication number
- GB915876A GB915876A GB44409/59A GB4440959A GB915876A GB 915876 A GB915876 A GB 915876A GB 44409/59 A GB44409/59 A GB 44409/59A GB 4440959 A GB4440959 A GB 4440959A GB 915876 A GB915876 A GB 915876A
- Authority
- GB
- United Kingdom
- Prior art keywords
- playing back
- transducing
- cutting
- arms
- stereophonic
- 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
- 230000002463 transducing effect Effects 0.000 title abstract 5
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract 2
- 229920002994 synthetic fiber Polymers 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 1
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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
- H04R11/12—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
915,876. Binaural transducers. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 31, 1959 [Jan. 2, 1959], No. 44409/59. Class 40 (4). A transducing device for cutting or playing back twin channel gramophone records comprises a stylus holder 7 coupled by a first coupling arm to a first transducing element 3 and by a second coupling arm to a second transducing element 4, each of said arms comprising two parts connected in tandem and of which the modulus of rigidity of one part 2a differs from that of the other part 2b. For stereophonic applications the two arms have identical properties. In other applications, e.g. for recording or playing back a monaural signal and an echo signal, the two arms may have different properties. The modulus of rigidity of part 2a is less than that of part 2b. Part 2a may be of rubber or synthetic material (e.g. polyvinyl chloride containing 40% softener) while part 2b is of metal or synthetic material such as polyvinyl chloride containing no softener. The transducing elements 3, 4 are permanent magnets and each is journalled to be rotatable about its axis and is situated in a magnetic circuit 5, 6. Specification 394,325 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL234792 | 1959-01-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB915876A true GB915876A (en) | 1963-01-16 |
Family
ID=19751503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB44409/59A Expired GB915876A (en) | 1959-01-02 | 1959-12-31 | Improvements in or relating to transducing devices for cutting or playing back from stereophonic or other twin channel gramophone records |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3115554A (en) |
| CH (1) | CH383639A (en) |
| DE (1) | DE1173684B (en) |
| FR (1) | FR1243777A (en) |
| GB (1) | GB915876A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH478502A (en) * | 1967-06-20 | 1969-09-15 | Audio Technica Kk | Pickup head for stereophonic record playback |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB394325A (en) * | 1931-12-14 | 1933-06-14 | Alan Dower Blumlein | Improvements in and relating to sound-transmission, sound-recording and sound-reproducing systems |
| FR747504A (en) * | 1931-12-14 | 1933-06-16 | ||
| US2114471A (en) * | 1936-06-20 | 1938-04-19 | Bell Telephone Labor Inc | Sound recording and reproducing system |
| DE971346C (en) * | 1955-07-02 | 1959-01-15 | Telefunken Gmbh | Pickup or cutting box for simultaneous playback or recording of lettering and side writing |
| ES247709A1 (en) * | 1958-03-08 | 1959-06-01 | Philips Nv | Transducing device |
-
1959
- 1959-12-29 DE DEN17702A patent/DE1173684B/en active Pending
- 1959-12-30 CH CH8246159A patent/CH383639A/en unknown
- 1959-12-31 US US863174A patent/US3115554A/en not_active Expired - Lifetime
- 1959-12-31 FR FR814613A patent/FR1243777A/en not_active Expired
- 1959-12-31 GB GB44409/59A patent/GB915876A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3115554A (en) | 1963-12-24 |
| DE1173684B (en) | 1964-07-09 |
| FR1243777A (en) | 1960-10-14 |
| CH383639A (en) | 1964-10-31 |
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