中文说明：
伪谱法地震波正演程序，MATLAB编写，可以实现伪谱法的在正演模拟。正演模拟中经常会用到有限差分的方法，但是有限差分的频散问题严重，增大差分次数大大降低了运算的效率，伪谱法很好的解决了这个问题。
English Description：
Pseudo-spectral seismic wave forward program, written by Matlab, can realize the pseudo-spectral method in forward simulation. The finite difference method is often used in forward modeling, but the dispersion of finite difference is serious, and the pseudo-spectral method can solve the problem. Oh, Shit