这个程序是计算信号的希尔伯特变换的，求信号瞬时相位，瞬时频率-This program is to calculate the signal of Hilbert transform, the signal instantaneous phase, instantaneous frequency

ITD算法程序 包括求极值、镜像延拓、求残余分量等.求分解之后能量较大信号的瞬时频率和瞬时幅值。(ITD algorithm.It includes spectral extremum, mirror continuation and residual components. The instantaneous frequency and instantaneous amplitude of the larger energy signal are obtained after decompos