用C实现的录音和播放程序，udp的client负责录音，udp的server负责同步播放。在录音数据传输前，采用g711u方式进行编码，在接收端解码后再进行播放。代码清晰，注释详细。-Implemented using C recording and playback programs, udp The client is responsible for recording, udp broadcast of the server is responsible for synchronizati