使用C编写的LDPC编码与解码程序，在linux下运行-Written in C and LDPC encoding and decoding process, running in linux

G.726 ADPCM算法在C语言上的实现代码,对研究与开发和ADPCM相关有很大的参考跟实用价值-G.726 ADPCM algorithm in C language code for ADPCM-related research and development and have great practical value with reference

语音压缩 与解压 的功能描述，用了c++编写的-Descr iption of voice compression and decompression functions with a c++ written