International Organization for Standardization (ISO)
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ISO 1188:1984
Scope
This International Standard specifies the recorded characteristic for magnetic sound records on 16 mm full-coat perforated magnetic film when used at the nominal speed of 24 frames [18,3 cm (7.2 in)] per second, or 25 frames [19,05 cm (7.5 in)] per second.
ISO 1188:1984 history
1984ISO 1188:1984 Cinematography; Recorded characteristic for magnetic sound on full-coat 16 mm motion-picture film; Specifications
1974ISO 1188:1974 Cinematography — Recording characteristic for magnetic sound record on 16 mm motion-picture film — Specifications