实现了对10个数字音的识别程序LDPC码的完整的编译码，包含位置式PID算法、积分分离式PID。- Realization of 10 digital audio recognition program Complete codec LDPC code, It contains positional PID algorithm, integral separate PID.

tranfer audio CODEC. Encoding by Viterbi and LDPC. THis source code is a part of SDR project-tranfer audio CODEC. Encoding by Viterbi and LDPC. THis source code is a part of SDR project