sin-fft

an tutorial for writing fast matlab code

产生一个线性调频信号并分析它的频谱，使用Matlab编写。(Produce a linear frequency modulation signal and analyzes its spectrum，Using Matlab )

Discrete cosine transform

propagation of 1_d wave in peresenc of dielectric slab

电机的直接转矩控制，用神经网络替代定子磁链观测器(Motor direct torque control using the neural network to replace the stator flux observer)

DDS中的正余弦生成，初始相位相差90度，可自行改变输出频率(Cosine generation of DDS, the initial phase difference of 90 degrees, the output frequency can be changed on their own)

实现一维和二维分世界傅里叶变换，含有对LFM信号的实例仿真。(Realization of one and two dimensional Fourier transform divided world, contain instances of LFM signal simulation.)

说明：  TE多模态数据，可用于多模态过程监控，检验算法(TE multimodal data can be used for multimodal process monitoring and verification algorithm)

在平滑信号中加入高斯分布的白噪声，然后用db4小波函数进行多尺度分解，滤除白噪声，将滤波前后的图进行对比(Add the Gaussian distribution of the white noise in the smoothed signal, and then multi-scale decomposition db4 wavelet function, the filtered white noise, comparing before and after filtering)

时频分析技术及其应用——随书光盘源码.rar(Time frequency analysis technology and Its Application-- source CD with the book)