DE908417C - Recording of basic noise-free sound recordings in A. push-pull sprout script - Google Patents
Recording of basic noise-free sound recordings in A. push-pull sprout scriptInfo
- Publication number
- DE908417C DE908417C DEK5100D DEK0005100D DE908417C DE 908417 C DE908417 C DE 908417C DE K5100 D DEK5100 D DE K5100D DE K0005100 D DEK0005100 D DE K0005100D DE 908417 C DE908417 C DE 908417C
- Authority
- DE
- Germany
- Prior art keywords
- push
- pull
- recording
- sprout
- script
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Description
Das Patent Sod. 599 schützt eine Anordnung zur Aufnahme von Tonaufzeichnungen in A-Gegentakt-Schrift, die dadurch hergestellt werden, daß zwei gemäß der Umhüllenden der Tonströme gesteuerte Blenden gleichphasig und in gleicher Richtung über den Aufnahmespalt bewegt werden. Hierbei können die beiden Blenden aus einem einzigen Stück bestehen.The patent Sod. 599 protects an arrangement for recording sound recordings in A push-pull, which are produced by two according to the envelope the sound streams controlled diaphragms in phase and in the same direction across the Receiving gap are moved. Here, the two panels can be made from a single one Piece.
Gemäß der Erfindung wird vorgeschlagen, zur Erzielung einer grundgeräuschfreien A-Gegentakt-Sprossenschrift die gemäß der Umhüllenden gesteuerten Blenden als Graukeile auszubilden. Dabei können natürlich auch die Graukeile zu einem einzigen Graukeil zusammengefaßt werden. Ein derartiges Ausführungsbeispiel der Erfindung ist in der Abbildung dargestellt.According to the invention it is proposed to achieve a noise-free A push-pull bar font the diaphragms controlled according to the envelope as gray wedges to train. Of course, the gray wedges can also become a single gray wedge be summarized. One such embodiment of the invention is shown in FIG Figure shown.
Zur Erzielung einer A-Gegentakt-Sprossenschrift werden die Graukeile i und a gegenüber dem Aufnahmespalt 3 von den Tonströmen bewegt; hierbei liegen diese Graukeile in bezug auf ihre Lichtdurchlässigkeit umgekehrt zueinander. Ein weiterer Graukeil .1, der sich ebenfalls im Strahlengang des Aufzeichnungslichtes befindet, aber in der Darstellung der L'bersicht halber versetzt gezeichnet ist, wird gemäß der Umhüllenden der Tonströme bewegt, derart, daß an den Stellen kleiner Amplituden im Vorführfilm eine größere mittlere Schwärzung erzielt wird als an den Stellen großer Amplituden. Dieser Graukeil dient also dazu, den bekannten Reintoneffekt zu erzielen.The gray wedges are used to achieve an A push-pull bar font i and a moved opposite the receiving gap 3 by the sound streams; lie here these gray wedges are inversely to one another with regard to their light transmission. A Another gray wedge .1, which is also in the beam path of the recording light is located, but is drawn offset in the illustration for the sake of clarity, is moved according to the envelope of the sound currents, in such a way that smaller at the points Amplitudes in the projection film a greater mean density is achieved than in the Make large amplitudes. This gray wedge is used to create the well-known pure tone effect to achieve.
An Stelle eines Graukeils können natürlich auch zwei Graukeile verwendet werden, die dann gemäß der Erfindung gleichphasig und in gleicher Richtung über den Aufnahmespalt bewegt werden.Instead of one gray wedge, two gray wedges can of course also be used are then in phase and in the same direction over according to the invention the receiving gap can be moved.
An Stelle der Graukeile selbst können natürlich auch Halbschattengebiete zur Erzeugung der gewünschten Aufzeichnung Anwendung finden. Für die Frequenzaufzeichnung können die Graukeile getrennt oder aber auch aus einem Stück hergestellt sein.Instead of the gray wedges themselves, penumbra areas can of course also be used to create the desired recording application. For frequency recording the gray wedges can be made separately or in one piece.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK5100D DE908417C (en) | 1939-02-02 | 1939-02-02 | Recording of basic noise-free sound recordings in A. push-pull sprout script |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK5100D DE908417C (en) | 1939-02-02 | 1939-02-02 | Recording of basic noise-free sound recordings in A. push-pull sprout script |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE908417C true DE908417C (en) | 1954-04-05 |
Family
ID=7210684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK5100D Expired DE908417C (en) | 1939-02-02 | 1939-02-02 | Recording of basic noise-free sound recordings in A. push-pull sprout script |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE908417C (en) |
-
1939
- 1939-02-02 DE DEK5100D patent/DE908417C/en not_active Expired
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