大家都見过笛子,許多人还会吹笛子,可是笛子为什么能发音这个問題却未必都能回答。一切声音都是由于物体的振动而产生的。看一看正在发音的琴弦,摸一摸正在响着的鑼,都会证实这一点。笛子能发音,也是由于物体的振动。不过笛子的振动体与某些乐器的振动体不同,它不是看得見、摸得着的固体,而是被包圍在笛管中的空气柱。吹笛子,就是通过吹孔,利用人口吹出的气流給以一定的作用力,使笛管中的空气柱产生振动而发出声音。会吹笛子的人都知道,吹出的气流应該正好冲在吹孔的边沿上。吹奏气流形成很 Everyone has seen the flute. Many people will also play the flute. However, the question of why the flute can be pronounced may not always be answered. All sounds are due to the vibration of the object. Looking at the string that is being pronounced, and touching the ring that is ringing, will confirm this. The flute can pronounce, but also because of the vibration of the object. However, the flute’s vibrating body is different from the vibrating body of some instruments. It is not a visible, tangible solid, but an air column that is surrounded by a flute. To play the flute, it is through the blow hole to use the air flow from the population to give a certain amount of force, so that the air column in the flute to produce vibration and sound. Everyone who knows how to play the flute knows that the air flow that blows out should hit the edge of the hole. Blowing air formation is very