一个有分割窗口的程序，这里是分割成3个窗口，挺好用的，试一试，大家参考参考-a split window procedure, here is divided into three windows, very good use, and try your information.

实现矩阵的Cholesky分解,用Cholesky分解求ARMA模型的参数并作谱估计,利用分裂基算法求复序列 的DFT.将得到的 解卷绕，得到无跳变的相频特性.计算七类窗函数并给出归一化对数幅频曲线-achieve Matrix Cholesky decomposition, Cholesky decomposition used for ARMA model and the parameters for spectral estimation, the use of split-based a