影响模拟声迹质量的因素

Factors in Affecting the Quality of Analogue Sound Track

模拟声迹在拷贝上的位置较靠近齿孔,由于电影胶片材料的敏感性使胶片齿孔周围的速度发生变化,这样模拟声迹的质量就受到一定的影响;放映机里还原声音时,会使靠近齿孔处的声迹密度发生变化;还有其它一些影响模拟声迹的质量因素。本文将对这些问题利用数据展开讨论。

The position of analogue sound track is close to the perforation holes in positive. Because of the sensitivity of raw stock of the film, the speed around the perforation holes is changed. Such speed change, while projector reproducing the sound, will change the sound track density close to the perforation holes as well and affect the quality of the analogue sound track. The paper discusses this phenomenon using data, as well as some other factors affecting the quality analogue sound track.