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Cinematography. Common to more than one film gauge. Sound. Method for measurement of the signal to noise ratio of 8 mm type, 16 mm and 35 mm variable area photographic sound records
BS 5550-5.4.6 – Cinematography. Common to more than one film gauge. Sound. Method for measurement of the signal to noise ratio of 8 mm type, 16 mm and 35 mm variable area photographic sound records