Cinematography. Relative and absolute sound pressure levels for motion-picture multi-channel sound systems. Measurement methods and levels applicable to analog photographic film audio, digital photographic film audio and D-cinema audio1 Scope This International Standard specifies the measurement methods and wide band sound pressure levels for motion picture control rooms, review rooms, and indoor theatres. Together with ISO 2969, it is intended to assist in standardization of reproduction of motion picture sound in such rooms.

NOTE 1 This document is applicable whenever the presence of “potentially harmful” or “hazardous” substances are present irrespective of whether they are naturally occurring or present due to human activity (i

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