code514

Matlab2010经典超强的教程,非常实用。(Matlab2010 classic course)

非均匀滤波器组仿真，16通道的非均匀滤波器组simulink模型(Simulation of non-uniform filter banks, 16 channels of non-uniform filter simulink model)

说明：  对曲线进行拟合，使得最后拟合的数据与元数据的误差最小(The curve fitting, so that the final fitting of the data with the metadata minimum error)

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

这是利用一个simulink环境下简单得PPT文件，希望对大家有帮助，谢谢！(This is the use of a simple simulink environment have PPT file, we want to help, thank you!)

this project about the Google ReCaptcha how it will work and all source code will be available in this code

matlab simulink 小电流中性点不接地，相间短路故障暂态仿真(nutural point not ground， phase short cut)

流水线模数转换电路输出信号做fft后求SNR,SNDR的matlab程序(matlab fft program for SNR and SNDR of pipelined analog to digital converter（ADC）)

好用的互信息程序，可以计算时序信号的互信息以及熵等。可以直接使用(it is used for multil-information,and it can be used directly.)

说明：  通信系统的仿真,Reed-Solomon-codes是纠错码的一种,可以用于通信领域,本例子给出了基于matlab的程序,可用于实际的仿真!(communications system simulation, Reed-Solomon-codes is an error-correcting codes, communications can be used, the example is given of the procedures based on Matlab can be used for actual simulation!)