说明：  我在网上转悠了半天，想找一个能实现立体声录音的源代码，最好是能指定声道进行录音（比如：指定录左声道时，右声道的声音就不会被录进来），可我没有找到，只好自己来写一个了。 本程序实现音频文件的播放；单声道录音、立体声录音并保存为.wav文件； 枚举系统中的声卡显示在下拉列表中供用户选择。 指定声道录音的功能我仍然没有实现，若有朋友知道实现方法敬请告知（chrys@163.com） 我的实现方法是：先录制立体声的.wav文件，然后再将声道提取出来，分别保存为 左声道的.wav文件和右声道的.wav文件，方法虽然笨，但也是没办法了。
(I cruise the Internet for a long time and want to achieve a stereo recording of the source code, it would be best to designated channel recording (for example : the designation were left channel, right channel voices will not come to be recorded), I could not find, they themselves had to write one. The program audio player; Mono audio, stereo recording and save. Wav file; Enumeration System of the card shows the drop-down list for users to select. Designated channel recording function, I still did not materialize, if my friends to know that this method Comments (chrys@163.com) I realize is : the first stereo recording. wav file and then re-channel extracted, kept separate from the left channel. wav files and the right channel. wav file, though stupid, but it is also not a solution.)