说明：  VB播放wav音频文件并显示波形，这个程序是个示例，代码介绍了基本原理和方法，显示波形部分还有些小问题，另外对WAV文件要求比较苛刻，需要标准的WAV文件。
(VB play wav audio files and display the waveform, this program is an example, the code describes the basic principles and methods to show the waveform and there is still some small problems, while more stringent documentation requirements on the WAV, the need for standard WAV files.)