竹笛、箫、管子、唢呐、巴乌等民族管乐器安装了T式键(参见1982年第2期《乐器》“T式键”一文),可以在不失乐器传统风格的前提下吹出全部半音来。一个音孔,在盖住了其中的一部分面积之后,就可能吹出它的降半音来。传统的办法是用手指直接按住半个音孔来求得这个降半音的。当然这就需要很高的技巧才能把音吹准。为了彻底解决音准问题,我们把直接用 The T-key was installed on ethnic wind instruments such as bamboo flute, flute, pipe, suona, bawu and so on (see “Musical Instrument” and “T-key” in 1982), allowing you to blow all the semitones without losing the traditional musical style . A sound hole, after covering a part of the area, may blow its halftone down. The traditional method is to use the fingers directly hold half a sound hole to obtain the drop of the half-tone. Of course, this requires a lot of skill to get the best sound. In order to completely solve the problem of pitch, we use directly