a-law u-law pcm间的转换，提供了快速实现这几种编码的转换方法 -a-law u-law pcm the conversion, the rapid realization of these various ways of coding

本源代码包含了各种声音，如G711,G723,G726,PCM，AAC，MP2等的编码和解码的过程，是学习各种声音编码的好资料。-Source code contains a variety of sounds, such as G711, G723, G726, PCM, AAC, MP2, etc. encoding and decoding process, are studying a variety of voice coding good information.

基于PCM的均匀量化编码，代码注释，方便学生使用，下载即可用。-PCM-based uniform quantization coding, download can be used.