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1.了解离散傅立叶变换及离散余弦变换的基本原理； 2.掌握进行FFT及逆变换的方法； 3.了解图像在频域中处理方法，应用MATLAB语言作简单的低通滤波器。 (1. Understand the discrete Fourier transform and discrete cosine transform the basic principle; 2. master for FFT and inverse transform; 3. understanding of image processing in the frequency domain method, MATLAB language for simple low-pass filter.)

说明：  用MATLAB语言编的程序，用来解决一个遗传算法的实际问题(Using MATLAB language of Procedure, a genetic algorithm to solve the practical problems)

对数据进行小波分析和重构，得到想要频率的波形进行分析(For the wavelet analysis and wavelet decomposition reconstruction of data, to obtain frequency waveform analysis)

半车模型，考虑车辆悬架，前后俯仰等自由度，利用S函数编写(Half car model, considering vehicle suspension, front and rear elevation and other degrees of freedom, the use of S-function written)

efficient and simple

飞天诚信ePass1000在BS结构下的内容读取(Flying in the BS structure integrity ePass1000 read the contents of)

基于MATLAB的遗传算法求解函数的最小值(MATLAB-based genetic algorithm for solving the minimum value of the function)

根据过渡带宽及阻带衰减要求，选择窗函数的类型并估计窗口长度N（或阶数M=N-1），窗函数类型可根据最小阻带衰减As独立选择 (According to the transition bandwidth and stopband attenuation requirements, select the type of window function and estimate the window length N (or the order of M = N-1), type of window function according to the minimum stop-band attenuation can be independently selected As)

voice activity detect

已知单位负反馈系统被控对象的传函为: • 设计滞后-超前校正装置,使校正后的系统满足: • (1).在单位斜坡信号作用下,Kv=10s^(-1) • (2).校正后相角裕度³ 45° • (3).系统校正后剪切频率wc ³ 1.5s^(-1) • (4).时域性能指标:s％£ 30％,Tp £ 2s,Ts £ 6s (units known negative feedback system object to the transfer function :)