中文说明：function [H,L]=my_Itd(x,n,err)% 将信号x进行ITD分解% n：分解层数% err：误差 %----终止条件为判断剩余函数是否单调%% 分别用三个点 多项式拟合L（1）和L（M）
English Description：
function [H,L]=my_ ITD (x, N, ERR)% decomposes signal x by ITD% n: number of decomposition layers% err: Error & nbsp;% --- the termination condition is to judge whether the residual function is monotonous%%, fitting L (1) and l (m) with three point polynomials respectively