说明：  根据《现代数字信号处理》（姚天任等，华中理工大学出版社，2001）第四章附录提供的数据(pp.352-353),用Levinson法估计其功率谱，并画出不同参数情况下的功率谱曲线。
(Modern digital signal processing (Yao Tianren, Huazhong University of Science and Technology Press, 2001), Chapter IV appendix provides data (pp.352-353), with Levinson method to estimate the power spectrum and draw the different parameters of the case Power spectral curve.)