05615893_yyouxian

在现代谱估计中，用自相关的无偏估计代替周期图中自相关函数的有偏估计，可能导致出现负的谱估计值，因此采用BT谱估计器的方法(In the modern spectral estimation, the use of self-related unbiased estimate the figure to replace the cycle of auto-correlation function biased estimate may lead to a negative estimated value of the spectrum, so the use of BT s method of spectral estimation)

对于Solder Mask Layers 和Paste Mask layers这个两个概念，有很多初学者不太理解这两个层的概念，本文做了一个通俗易懂的解释(an article about Solder Mask Layers and Paste Mask layers)

通过modelsim仿真检测matlab生成滤波器效果。(Generate the filter through matlab and simulated by modelsim.)

离散傅里叶变换与逆离散傅里叶变换的程序代码( The program codeDiscrete of Fourier transform and inverse discrete Fourier transform )

计算临界转速的小程序，考虑了轴的分布质量，但是不包括振型(Calculated critical speed of small programs, considering the quality of the axis of the distribution, but does not include the vibration mode)

有关心理声学模型的一段程序，偶然中发现，希望有所帮助(a programme about psychoacoustic model )

利用模拟退火法求函数在某一范围的极小值，对于验证模拟退火算法的可行性有重要意义。(Using simulated annealing method the minimum value of a function in a range of simulated annealing algorithm to verify the feasibility of significance.)

Mathematical formula

在社会网络中，采用MATLAB构建最小图和查看两个图是否相似的两个算法(In social networks, using MATLAB to build a minimum figure and view two graphs is similar to the two algorithms)

IEEE14节点系统参数的matlab程序，可以用于计算14节点系统潮流。(IEEE14 node system parameters matlab procedures can be used to calculate the 14-node system trends.)