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通过计算短时信号熵，与阈值比较，得到判决结果。并采用顺序统计滤波器（最大值滤波器）对所得熵值滤波，提高判决精度。 能有效的分辨出语音信号和噪声信号，且通过后端平滑处理，使语音检测结果更加集中。(VAD based on short-time entropy, precision improved by using order-statistical-filter, VAD result is smoothed to make the result more accurate.)

this programs implements the second order digital resonator.

电力系统仿真技术，主要是matlab环境下的电力系统仿真研究(Power system simulation technology, mainly is the matlab environment simulation of power system)

盲信号分离程序，用于期望信号的提取，和对干扰信号以及噪声的抑制。(Blind signal separation procedure for extracting the desired signal and suppress interfering signals and noise.)

该程序可以进行扇形的短扫描重建，利用Parker加权函数。得到不错的重建效果。希望对大家有帮助。仅供参考！(This programme is a short-fan reconstruction.On the use of Parker weight function.I hope it will be useful.And the result of this programme is good.)

This is a program of a diversity transmission system based on superposition modulation

差分进化算法代码,请下载使用，很有学习价值，我已验证可以使用(Differential evolution algorithm code, please download, it is worth learning, I' ve verified that you can use)

说明：  本书是美国经典数字【信号与处理】的中文版。对于学习通信和信工来说非常有帮助(This book is the American classic digital signal processing】 【Chinese version. Work for learning communication and trust is very helpful)

创建一个理想的mixer输入是理想的LO信号和输入信号输出是混合后的信号。(build a ideal mixer the input is ideal LO signal and the input signal.)

projet 4 is very importand