pyqt声音输入

参考文档：

http://blog.csdn.net/jdh99/article/details/39525451

http://blog.csdn.net/jdh99/article/details/39204129

http://blog.csdn.net/jdh99/article/details/6226435

http://www.oschina.net/code/snippet_1243295_48623