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ISO 8687:1987 Cinematography -- Signal-to-noise ratio of 8 mm Type S, 16 mm and 35 mm variable-area photographic sound records -- Method of measurement
standard by International Organization for Standardization, 08/01/1987
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This International Standard specifies a preferred method and an alternative method for measuring the signal-to-noise ratio of 8 mm type S, 16 mm and 35 mm variable-area photographic Sound records.