Recording and Reproducing 16 Soundtracks within 5 Millimeters Film Width
A sound-recording technique has been devised that uses light-emitting diodes and fiber-optics to expose the soundtracks; then optical fibers couple the soundtracks to phototransistors for playback. The soundtracks produced by this method are variable density. Test results and limitations are presented. The capability of recording a photographic film soundtrack in 1/100-in (0.254-mm) width and 16 parallel tracks in less than 5 mm (0.197 in) may have application to wide-screen motion picture soundtracks in the future.
- Print ISSN
- 0361-4573
- Published
- 1973-02
- Content type
- Original Research
- DOI
- 10.5594/J13479
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