不同的窗函数，都对应不同的幅值修正系数；针对复制修正中最重要的平顶窗，给出修正的方法。-Different window functions, corresponding to the amplitude correction factor copy the most important amendment of the flat-top windows, give a correction method.

信号处理中的振幅谱和相位谱以及谱密度估计等-1) Calculation of: - One-sided amplitude spectrum - One-sided phase spectrum - Vector of frequencies. 2) The function can plot: - One-sided amplitude spectrum - One-sided phase spectrum. Two examples are g

倒计时程序，时钟置顶显示不影响其他操作，时间到使用全屏提醒，alt+f4关闭窗口。-The countdown clock procedures, the top display does not affect other operations, the time to use full screen to remind, alt+f4 to close the window.

调用dll函数来将一个窗口始终放在最前面-Call the dll function to be a window always on top