FR838794A - Method of reproducing sound recordings in several curves - Google Patents
Method of reproducing sound recordings in several curvesInfo
- Publication number
- FR838794A FR838794A FR838794DA FR838794A FR 838794 A FR838794 A FR 838794A FR 838794D A FR838794D A FR 838794DA FR 838794 A FR838794 A FR 838794A
- Authority
- FR
- France
- Prior art keywords
- reproducing sound
- sound recordings
- several curves
- curves
- several
- 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
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/02—Analogue recording or reproducing
- G11B20/04—Direct recording or reproducing
-
- 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
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE838794X | 1937-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR838794A true FR838794A (en) | 1939-03-15 |
Family
ID=6761747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR838794D Expired FR838794A (en) | 1937-06-03 | 1938-06-02 | Method of reproducing sound recordings in several curves |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE428377A (en) |
FR (1) | FR838794A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0119829A2 (en) * | 1983-03-14 | 1984-09-26 | Dolby Laboratories Licensing Corporation | Improvements in apparatus for reproducing motion picture film photographic sound-tracks |
EP0259505A1 (en) * | 1986-08-27 | 1988-03-16 | ANSCHÜTZ & CO. GmbH | Optical transducer for stereo optical soundtrack in cinematographic films |
-
0
- BE BE428377D patent/BE428377A/fr unknown
-
1938
- 1938-06-02 FR FR838794D patent/FR838794A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0119829A2 (en) * | 1983-03-14 | 1984-09-26 | Dolby Laboratories Licensing Corporation | Improvements in apparatus for reproducing motion picture film photographic sound-tracks |
EP0119829A3 (en) * | 1983-03-14 | 1986-09-03 | Dolby Laboratories Licensing Corporation | Improvements in apparatus for reproducing motion picture film photographic sound-tracks |
EP0259505A1 (en) * | 1986-08-27 | 1988-03-16 | ANSCHÜTZ & CO. GmbH | Optical transducer for stereo optical soundtrack in cinematographic films |
Also Published As
Publication number | Publication date |
---|---|
BE428377A (en) |
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