A/u 律PCM 编码及恢复，分为A 率压缩公式编码、A 率扩张解码、A 率13 折线编码-A/u law PCM coding and restoration, is divided into A formula for the rate of compression coding, A rate of expansion of decoding, A rate of 13 line coding

在PC环境下开发语音采集、压缩、打包、网络传输、接收存储、声音回放等单向通信功能，编写简单界面；采样率：8KHZ，存储基本数据格式：单通道A律PCM，录音数据源：pc MIC接口，自行制定通信协议，采用UDP传输、pcm语音帧长40ms；-Development of voice in the PC environment, acquisition, compression, packaging, network transmission, reception, storage, sound p