Feinberg Jack, Yang Bingen
Department of Physics and Astronomy, SSC 327, University of Southern California, Los Angeles, California 90089-0484, USA
Department of Aerospace and Mechanical Engineering, OHE 400F, University of Southern California, Los Angeles, California 90089-1453, USA
J Acoust Soc Am. 2018 Nov;144(5):EL460. doi: 10.1121/1.5080465.
A magnet can affect the vibration of the metal strings in a musical instrument. Here it is shown that a magnetic field can cause splitting of a metal guitar string's normally degenerate transverse vibration modes, leading to a beat note in the resulting sound. A distributed-spring model accurately predicts the natural frequencies of a vibrating guitar string in the non-uniform magnetic field.
磁体可以影响乐器中金属弦的振动。在此表明，磁场会导致金属吉他弦通常简并的横向振动模式发生分裂，从而在产生的声音中形成拍音。分布式弹簧模型能够准确预测非均匀磁场中振动吉他弦的固有频率。
