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单词 optical sound
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optical sound
optical sound n. Film recorded sound represented by a pattern of light and dark alongside the frames of a film.
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society > leisure > the arts > performance arts > cinematography > filming > special techniques > [noun] > specific sound techniques
Vitaphone1926
Movietone1927
playback1952
optical sound1960
Foley1973
walla1984
1933 B. Brown Amateur Talking Pict. vii. 146 The optical sound system of the R.C.A. portable is shown diagrammatically.]
1960 McGraw-Hill Encycl. Sci. & Technol. III. 124/2 The magnetic sound track is..26 frames ahead [of the picture] on 16-mm film, the same as optical sound.
1990 French Rev. 63 1083 ‘Annexes’..provide both technical information (physics of light, chemistry of color film, basics of optical sound and Dolby A, etc.) and practical data.
extracted from opticaladj.n.
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