中文说明： 用谱方法计算流体力学一些流动现象的整体稳定性,有详细的注释，可以实现模式识别领域的数据的分类及回归，完整的基于HMM的语音识别系统，自写曲率计算函数 ,分数阶傅里叶变换计算方面。
English Description：
Method is used to calculate overall stability of fluid flow phenomena, there are detailed notes, you can implement data in the field of pattern recognition classification and regression, complete with HMM-based speech recognition system, wrote curvature calculation functions, fractional Fourier transform.