二胡是弦与琴杆的距离适当,是演奏者能保持正确手形的不要条件。由于琴杆左侧至琴筒右端面距离一定,青少年及手长叫短者不得不把千斤调短,使弦过于倾斜。据二胡的演奏方法和振动规律,通过分析,从理论上指出了这将导致琴弦和琴皮的振幅都要变小,结果音量变小,不易演奏强弱变化的音型;同时不易实现“滚压结合式”揉弦中的“压”。 The erhu is the right distance between the strings and the pitch bar, an indispensable condition for the player to maintain the correct hand shape. As the left side of the piano rod to the right end of the piano a certain distance, young people and short hand called the short jack have to short, so that the string is too inclined. According to erhu’s playing method and vibration law, through the analysis, it is pointed out theoretically that this will result in the amplitude of the string and the guitar skin becoming smaller and the volume of the result becoming smaller, so that it is difficult to play the pattern of varying strength; meanwhile, Rolling combined “rubbing string in the” pressure. "