在乐器中以膜振动为主的乐器有我国民族乐队中使用的各种大小京鼓、手鼓,有庆祝用的报喜鼓,有管弦乐队用的军鼓和定音鼓等。此外,在京胡、二胡、秦琴等弦乐器琴筒上蒙的蛇、蟒皮膜等,都是膜振动的情况。膜振动和弦振动有什么异同呢?对于称之为“弦”振动的条件,一般是指该振动弦主要是受张力T作用的蹦紧来产生恢复力的情况。从这个意义上说,膜片的振动可以看成是弦的扩展,理想的柔软弦只受张力而没有劲度,理想的柔软膜也只有张力而不考虑劲度。从弦的 In the musical instruments to film vibration-based instruments used in our national band of various sizes Beijing drums, tambourines, there are celebratory hi hi drums, with orchestral snare drum and timpani and so on. In addition, Jinghu, erhu, Qin Qin and other stringed instruments on the piano snake, python membrane, are the membrane vibration situation. What are the similarities and differences between film vibration and chord vibration? For the condition called “chord” vibration, the vibration chord generally means that the chord is mainly generated by the tension T and the spring force. In this sense, the vibration of the diaphragm can be regarded as an extension of the string. The ideal soft string is tensioned without stiffness, and the ideal soft film is tensioned without regard to stiffness. From the chord