基于DVB-c欧洲标准的有线数字标准，实现差分编码和解码，可以实现该功能-based on DVB-c European standards Digital Cable standards, the differential coding and decoding, can achieve the functional

DM,ADM,DPCM,ADPCM.LP,PARCAR等语音压缩的算法,此为adpcm的c语言编写的程序-DM, ADM, DPCM, ADPCM.LP, PARCAR such as voice compression algorithm, for this mode of c written procedures