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所有精细、精密的机械构造都有两级调整,如摄录设备和测绘设备,均是先调大焦距,再调小焦距。在乐器上的调弦系统也有这种设置,如小提琴,是先调弦轴,再调弦钩。可中国民族乐器却鲜有这样的设置,即中国的民族乐器大多都是一级调整,即只用弦轴调弦。但也有一个例外,这就是古筝,在古筝上具有两级调的调弦系统。然而其二级调整却是不方便的、有缺点的。 古筝对于音高的微调是在扳拧弦轴之后挪动码子来完成。由于这种方
All fine, sophisticated mechanical structure has two levels of adjustment, such as video recording equipment and mapping equipment, are the first large focal length, then adjust the small focal length. In the instrument tuning system also has this setting, such as violin, is the first tune the peg, and then tune the hook. However, Chinese national musical instruments rarely have such a setting, that is, most of China’s national musical instruments are first-level adjustments, that is, only the tuning of the strings. But there is an exception, this is the guzheng, with two levels in the zither tuning system. However, its secondary adjustment is inconvenient and disadvantageous. The fine tuning of the zheng for the pitch is done by moving the code after pulling the string axis. Because of this party