在MATLAB下运行后可以得到一个日历界面，并且有时间显示！-Run in MATLAB can interface with a calendar and time display!

matlab编程，画出一段语音的语谱图，在不同时间声音的不同频率，可以比较出有声段和无声段的能量不同。-Matlab programming, draw the spectrogram of a voice, the sound of different frequencies in different time, you can compare audio segment and the energy of the silent segment.

城市轨道交通的列车间隔追踪仿真，主要在不同最大速度下的追踪时间间隔-Urban rail transit train interval tracking simulation, mainly in the different maximum speed tracking time interval