中文说明：
可用于进行任意自由度的结构的动力时程分析，求解结构的动力响应，包含位移、速度以及加速度，然后对其进行傅里叶变换到频域，可通过滤波函数去除无关频率。
English Description：
It can be used for the dynamic time history analysis of the structure with any degree of freedom, to solve the dynamic response of the structure, including displacement, velocity and acceleration, and then Fourier transform it to the frequency domain, which can remove the irrelevant frequency through the filter function