（Wave）编写一个读显Wave文件的SDI程序，要求：实现文件过滤、播放声音、（按客户区大小）画出（全部）声音数据的波形曲线（对双声道音频，画两条曲线）。-(Wave) significant time to prepare a Wave file SDI procedures, requirements: file filtering, play a sound, (according to customer size) draw (all) audio data waveform curv