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a good docs about an electrobiological signal traitment and processing it describ a wavelette method and the time frequency traitment

基于背景差分的视频背景提取，及车辆检测，基于matlab(Based on the background of the video background differential extraction, and vehicle detection)

视频分析方法中的平滑伪Wigner-Ville分布等效于对WVD的结果在时域和频域分别进行一次平滑滤波，有效抑制交叉干扰。(Video analysis methods smoothed pseudo Wigner-Ville distribution is equivalent to the result of the WVD smoothing once were in the time domain and frequency domain, inhibit cross-interference.)

fp=0.2KHz,Rp=1dB, fs=0.3KHz,As=25dB,T=1ms；用脉冲响应不变法设计一Butterworth数字低通滤波器，观察所设计数字滤波器的幅频特性曲线，记录带宽和衰减量，检查是否满足要求。(fp=0.2KHz,Rp=1dB, fs=0.3KHz,As=25dB,T=1ms；The same method to design a digital low-pass Butterworth filter, observe the design of digital filter frequency characteristic curve, recording the amount of bandwidth and attenuation, check with the impulse response meets the requirements.)

说明：  非线性分类，SVM理论为基础，调整参数改变分类（聚类的）边界的松紧程度(Nonlinear classification, SVM theory, adjust the parameters to change the classification (clustering) the degree of elastic boundary)

说明：  利用matlab强大的数据处理功能和图形化功能来对信号进行处理，这是吴镇扬的数字信号处理第四次实验的全部代码，可用来参考(Using matlab powerful data processing and graphical capabilities of signal processing, which is the fourth digital signal processing Zhen-Yang Wu experiment all of the code can be used to refer to)

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