毕业设计有用，matlab程序运行时导入数据文件作为输入参数，分析了该信号的时域、频域、倒谱，循环谱等,FIR 底通和带通滤波器和IIR 底通和带通滤波器，有信道编码，调制，信道估计等，包含特征值与特征向量的提取、训练样本以及最后的识别。- Graduation useful Import data files as input parameters matlab program is running, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Channel coding, modulation, channel estimation, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition.