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弦乐器,如二胡、三弦、提琴、筝、钢琴等,它们分别有二根、三根、四根、十多根、数十根到上百根琴弦。每种弦乐器的高音弦多是光秃秃的裸弦,而低音弦多是采用缠绕着铜絲、德银絲、镍铬絲或尼龙絲等材料的缠弦。为什么弦乐器的低音弦要采用缠弦呢?这个问题需要从乐器发音高低,和弦对乐器音量、音色的影响以及乐器本身的结构等方面来谈。弦乐器发音的高低,也就是弦振动频率的高低,弦振动的频率通常用下式表示:
Stringed instruments, such as erhu, sanxian, violin, zither, piano, etc., which have two, three, four, ten, tens to hundreds of strings. The bass strings of each stringed instrument are mostly bare bare strings, while the bass strings are mostly wrapped around the wire wrapped with copper, German silver, nickel chrome wire or nylon wire and other materials. Why does the bass string of a stringed instrument have a wrapping? This question needs to be discussed in terms of the level of the instrument’s voice, the influence of the chord on the instrument’s volume, the timbre, and the structure of the instrument itself. The level of string instrument pronunciation, which is the level of string vibration frequency, string vibration frequency is usually expressed as follows: