ISO 1188-1984 Cinematography Recorded characteristic for magnetic sound on full-coat 16 mm motion-picture film Specifications《电影 16mm磁片的录音特性 规范》.pdf

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1、Norme internationale INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONOMEXYHAPOHAR OPrAHM3ALWlR n0 CTAHflAPTM3ALW*ORGANISATION INTERNATIONALE DE NORMALISATION Cinmatographie - Caractristique denregistrement sonore sur film cinmatographique 16 mm magntique, couch pleine largeur - Spcifications Cnema tog

2、raph y - Record f est la frquence en hertz; t est la constante de temps en secondes. 3 Tolrances Les valeurs numriques approches sont donnes dans le tableau. Tableau - Valeurs numriques approximatives des caractristiques denregistrement Frequence Hz 40 - 50 63 80 100 125 160 200 250 315 400 500 630

3、800 1000 1250 1600 2000 2500 3 150 4000 5 000 6300 8000 dB 0,13 O,l3 0,13 0,13 0,12 O,l2 0,ll OJO O,O8 0,05 0,OO - 0,07 -0,19 - 0,37 - 0,64 - 1,Ol - 1,61 - 2,36 - 3,3l - 4,52 - 5,99 - 7,53 - 9,25 -Il,13 10 000 - 12,95 12 500 - 14,81 16 000 - 16,90 NOTE - Les valeurs numriques de la caractristique en

4、registre ont t normalises 400 Hz. Les enregistrements sonores magntiques sur films doivent tre enregistrs avec la caractristique spcifie dans le chapi- tre 2, lintrieur des tolrances donnes la figure. 0 dB 4OHz IOOHa IkH IOkH 16kH 1215 kH Figure - Tolrances sur le niveau denregistrement sur film 16 mm 1 Page blanche

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