打开一个音乐文件后，可以显示mp3的波形的示例程序-Open a music file, mp3 to show an example of procedure of the waveform

这是采用dephle7.0自开发一款串口软件，可以实时显示波形。-This is used since the development of a serial dephle7.0 software, you can display real-time waveform.