中文说明： 用于建立主成分分析模型，最小均方误差（MMSE）的算法，基于负熵最大的独立分量分析，计算互信息非常有用的一组程序,随机调制信号下的模拟ppm，分析了该信号的时域、频域、倒谱，循环谱等。
English Description：
It is used to build principal component analysis model, minimum mean square error (MMSE) algorithm, independent component analysis (ICA) based on maximum negative entropy, and a set of very useful programs to calculate mutual information. It is used to simulate ppm under random modulation signal. The time domain, frequency domain, cepstrum and cyclic spectrum of the signal are analyzed.