MATLAB，基于GUI的串口的调试工具，并将接收到的数据实时显示在坐标轴上。-MATLAB, the serial port of the GUI-based debugging tools, and data received in real time is displayed in the axis.

产生一个正弦信号，用均匀PCM方法分别用8电平和16电平做量化，在同一坐标轴画出原信号和已量化信号，比较两种情况下的SQNR-the matlab source code of U_pcm