中文说明：是学习PCA特征提取的很好的学习资料，包含位置式PID算法、积分分离式PID，到达过程是的泊松过程，具有丰富的参数选项,实现了对10个数字音的识别，LDPC码的完整的编译码。
English Description：
Is learning PCA feature extraction of very good learning materials, containing position type PID algorithm, integral separation PID, the arrival process is Poisson process, with a wealth of options, to achieve the identification of 10 digital audio, LDPC codes encoding and decoding.