电影 模拟摄影35mm和16mm有声试验片 规范

[中文适用范围]： 本国际标准规定了用于检查、调整和测量电影放映机声音系统和单声道或立体声电影装置的声音再现通道的模拟摄影声音测试胶片国际交换的基本技术特性。 2 本国际标准规定了 35 毫米和 16 毫米电影胶片上制作的测试胶片的类型和技术特性。 3 本国际标准包括用于检查、调整和测量 a) 扫描光束的聚焦和方位角，b) 扫描光束宽度及其相对于薄膜参考边缘的位置，c) 扫描光束的均匀性的测试薄膜。 照明，d) 多个电影放映机的电平输出平衡，e) 声音再现通道的频率响应，以及 f) 胶片传输的不均匀性。 [外文原描述]： 1.1 This International Standard specifies basic technical characteristics for the international exchange of analogue photographic sound test films intended for checking, adjusting and measuring motion-picture projector sound systems and sound reproducing channels of motion-picture installations for monophonic or stereophonic reproduction. 1.2 This International Standard specifies types and technical characteristics of test films made on 35 mm and 16 mm motion-picture films. 1.3 This International Standard includes test films intended for the checking, adjusting and measuring of a) focusing and azimuth of the scanning beam, b) scanning beam width and its position relative to the reference edge of the film, c) uniformity of the scanning beam illumination, d) level output balance of several motion-picture projectors, e) frequency response of the sound reproduction channel, and f) non-uniformity of film travel.