我们在弹三弦或拉二胡时总是要手指在琴弦上有规律地上下移动,才能发出美妙动听的声音。假如手指胡乱地移动,便弹不成曲调了。那么,手指在琴弦上移动对发声有什么作用呢?原来声音是否悦耳动听,与琴弦的长短有关。长度不同,发出的声音也不同。手指的上下移动,不断地改变琴弦的长度,发出的声音便高低起伏,抑扬顿挫。如果是三根弦同时发音,只有当它们的长度比是3:4:6时,发出的 When we play samisen or pull erhu, we always want our fingers to move up and down regularly on the strings to make wonderful sounds. If you move your fingers casually, you can not play a melody. So, the finger move on the strings on the voice what effect? ​​The original sound is sweet, and the length of the string. Different length, the sound is different. The finger moves up and down, constantly changing the length of the string, the sound will be ups and downs, cadence. If the three strings sound at the same time, only if their length ratio is 3: 4: 6