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calculate fourierseries of signal

瑞星升级小程序，自己开发，参考参考。瑞星升级小程序，自己开发，参考参考。瑞星升级小程序，自己开发，参考参考。(ruixing upade)

信号产生和fft变换分析 信号通过switch函数选择产生(Signal generation and fft transform analysis of the signal generated by switch function selection)

比较齐全的hht算法的程序，可以进行谱峭度分析，选取峭度最大的分量，求其包络谱，能够明显看出特征频率，比较实用。(A more complete algorithm of HHT algorithm can carry out spectral kurtosis analysis, select the largest component of kurtosis, and find its envelope spectrum, which can clearly see the characteristic frequency, and is more practical.)

声音识别程序，MATLAB程序，很好的例子，可以一看(Voice recognition program, MATLAB program, a good example, can one see)

同步电机电流预测控制，建立电机模型，通过编写函数实现电流的预测控制(predictive current control of PMSM)

fisher分类器matlab代码，只具有二分类特性，可运行(fisher classifier matlab code, has only two classification features, you can run)

在matlab中，Soble算子检测边缘，并保存原图中每个像素相对应的梯度模长和方位角，然后进行边缘连接(In matlab, Soble edge detection operator, and save the original image corresponding to each pixel in length and azimuth gradient mode, then the edge connector)

数字实验和MATLAB，很好的教程，欢迎下载列子很全(Digital experiments and MATLAB, a good tutorial, welcome download Liezi very full)

FreeType is a software font engine. version 2.3.5(FreeType is a software font engine that is designed to be small, efficient, highly customizable and portable while capable of producing high-quality output (glyph images). It can be used in graphics libraries, display servers, font conversion tools, text image generation tools, and many other products as well.)