利用DirectSound从麦克风获取声音，以WAV格式存储至计算机的硬盘，并利用Graphics类显示声音文件的波形。-Catch sound from cumputer s microphone.Store it as WAV in the HDD off the computer. Draw waveform of the WAV file by using Graphics.

mp3等音频刻录及播放，有波形图的，可制作mp3播放器 -wav, mp3 and other audio recording and playback, there are waveforms, and can be made mp3 player