计算通信数据压缩解压缩之后的EVM值，EVM值越小说明压缩失真越小。-Computing communication data compression and decompression after EVM value, EVM values ​ ​ smaller the smaller the compression artifacts.

语音压缩和解压编码神器，属于开源代码库，支持跨平台编译，适合于voip语音聊天-Voice compression and decompression coding artifacts belonging to the open-source code library that supports cross-platform compilation, suitable for voip voice chat