0基于语音信号特征：短时能量，短时过零率子带谱熵的语音信号的端点检测-0 endpoint detection based on speech signal characteristics: short-term energy, short-term zero-rate sub-band spectral entropy of speech signals

Interpolation and fitting, solution of equations, data analysis, This is the second energy entropy matlab code, Calculating a target and ocean echo power spectral density.

Including orbital maneuvering simulation, initial orbit calculation, Energy entropy calculation, The signal spectral analysis and filtering.