中文说明： 随机调制信号下的模拟ppm，部分实现了追踪测速迭代松弛算法，基于小波变换的数字水印算法matlab代码，BP神经网络的整个训练过程,语音信号的采集与处理，数字信号处理课设，包括最小二乘法、SVM、神经网络、1_k近邻法。
English Description：
The simulation of PPM under random modulation signal, part of the realization of the tracking speed iterative relaxation algorithm, digital watermarking algorithm based on wavelet transform, matlab code, the whole training process of BP neural network, voice signal acquisition and processing, digital signal processing course, including least square method, SVM, neural network, 1_ K-nearest neighbor method.