说明：  AR模型的Burg算法的matlab程序! 只要把程序里面的K的值改为所求问题的阶次，把x改成所求问题的数据矢量就可以非常方便的求出Burg算法的AR模型的参数！
(AR model of Burg algorithm matlab program! As long as the procedures inside the value of K changed the order for the problem, the problem for x into the vector data can be very convenient Burg algorithm to derive the parameters of AR model !)