Dual sound system

Details Dual sound system Dual sound system

G - Physics

03

B

88/64, 352/71

G03B 31/02 (2006.01)

Patent

CA 1039850

ABSTRACT OF THE DISCLOSURE A Super-8 mm. movie film with two optical sound tracks, one in each margin of the film. A method for optically record- ing and reproducing audio information with high fidelity on a very narrow sound track. A scanning apparatus has lens and masks which accurately define and direct a light beam on the film sound track for high fidelity reproduction.

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