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录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。 （1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。 （2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。 （3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。 (Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.))

基于Matlab的object tracking的一个小程序(A small program about object tracking based on the matlab )

AES coding end de-coding by matlab

有信道编码，调制，信道估计等，包括主成分分析、因子分析、贝叶斯分析，包括最小二乘法、SVM、神经网络、1_k近邻法。( Channel coding, modulation, channel estimation, Including principal component analysis, factor analysis, Bayesian analysis, Including the least squares method, the SVM, neural networks, 1 _k neighbor method.)

说明：  小波改进阈值去噪，并分析去噪后信号的信噪比和均方误差(Improving threshold denoising by wavelet transform and analyzing signal-to-noise ratio and mean square error of denoised signal)

LINEAR BLOCK CODE SIMULATION IN MATLAB

time series In this example we will use a synthetic data set. To create our synthetic data we will make our unit of time 1000 years = 1 ky and sample a 500,000 year record in 2 ky increments. We first create a vector containing the times:

随机性选择函数，在一组最优解中，随机概率选择目标函数值最大的解(Random selection function, the optimal solution in a group, the random probability of choosing the objective function value of the maximum of the solution)

Matlab实现界面友好，利用matlab针对图像进行马氏距离计算 ,抑制载波型差分相位调制。( Matlab to achieve user-friendly, Using matlab to calculate the Mahalanobis distance for the image, Suppressed carrier type differential phase modulation.)

ECG on mathematical test taken on 250 Hz (sampling frequency) You can use in order to obtain (and compare) the stress (from HRV)