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关于蒙特卡洛在工程上的应用，仅供参考和互相学习，共同进步。(About Monte Carlo in engineering applications, for reference and mutual learning and common progress.)

voice frequency Analysis

Spectral Methods in MATLAB 即用spectral的方法并开matlab来做数值解法(Spectral Methods in MATLAB)

使用矢量量化的方法进行说话人识别，用matlab编写 (Vector quantization method using speech recognition, written with matlab)

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)

用于计算电力系统的节点阻抗或者导纳，还算比较好用。(It can be used to calculate nodal impedance or admittance of power system.)

说明：  计算一个地震序列的F-K谱。也可以直接用了。比较有条理。(compute FK spectrum of a seismic gather)

射线跟踪算法的MATLAB程序。仿真了光场传播，用差分三角形式优化了射线跟踪算法。(Ray tracing algorithm MATLAB program.)

检测视频中设置区域的运动车辆，设置虚拟线检并计数参考程序测目标车辆(Setting up Virtual Line Inspection and Counting Reference Program to Measure Target Vehicles)

optmization algorithm method "Davidon-Fletcher -Powell" DFP