ISO 7832:1987 电影技术.光学型音频级试验胶片的光电输出率测野和校准

标准编号：ISO 7832:1987

中文名称：电影技术.光学型音频级试验胶片的光电输出率测野和校准

英文名称：Cinematography — Photoelectric output factor of photographic-type audio-level test films — Measurement and calibration

发布日期：1987-10

标准范围

介绍了一种通过校准音响设备测量和校准所有仪表中单通道摄影型音频电平测试胶片的光电输出系数的方法。该规范适用于可变区域和具有银色音轨的可变密度录音。校准音频电平测试胶片用于精确测量摄影声音复制器的输出电平和不同声音记录的光电输出系数。此外，还描述了校准音频复制器的性能。

Describes a method of measuring and calibrating the photoelectric output factor of single-channel photographic-type audio-level test films in all gauges by means of a calibrating sound reproducer. The specifications apply to both vaiable-area and variable-density sound records with a silver audio track. Calibrated audio-level test films are used for the precise measurement of the output level of photographic sound reproducers and the photoelectric output factor of different sound records. In addition, the performance of a calibrating audio reproducer is described.

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