本标准规定了使用校准音频复制机在所有胶片测量仪中测量单轨摄影音频电平测试胶片光电输出系数的方法。它适用于可变区域和可变密度的音频记录。本标准还规定了校准音频复制机的预期性能。校准音频电平测试胶片用于测量摄影音频复制机的精确输出电平和不同音频记录的光电输出系数，并在为安装而适当选择的标准节目电平计上建立参考电平。

This standard specifies the method of measurement of the photoelectric output factor of single-track photographic audio level test films in all film gauges, using a calibrating audio reproducer. It is applicable to both variable-area and variable-density audio records.The standard also specifies the intended performance of a calibrating audio reproducer. Calibrated audio-level test films are employed to measure the precise output level of photographic audio reproducers and the photoelectric output factor of different audio records, and to establish a reference level on a standard program-level meter appropriately chosen for the installation.