可能由于电脑的问题，运行这个程序。不能唱歌，但是下载到板子上效果很好，歌声很正常。所以如果外围元件只有一个小喇叭的话，仿真出来效果还不错。

注意：把两个仿真文件同时打开，一个字幕，一个是歌曲.-May be due to computer problems, run the program. Can not sing, but downloaded to the board works well, singing normal. So if only a small speaker peripheral components, then the simulation results were pretty good out. Note: The two simulation files open simultaneously, a subtitle, one song.