SpeechRecognition_DTW

解决露天煤矿的问题，是数学建模中的考试题目。(Solve the coal mine of the problem is mathematical modeling of the exam questions.)

FOR HELP AND DOCUMENT FOR POWER FOR HELP YOU

Various routines that simulate or compute aspects of digital communication systems

This is a matlab code. It is used to create a circle in matlab. It is very interesting. Apply this.

说明：  离散余弦变换的程序，主要对数据的实数部分进行变换(Discrete cosine transform procedure, the main part of the data to transform the real)

This is a our final year project that we did for for the partial fulfillment of BSc degree in Electrical Engineering.

在MATLAB下一个点云的三维重程序，里面有大家所学要的MAT格式数据，希望对大家有用(In MATLAB three-dimensional re-program the next point cloud, which has to be learned by everyone in the MAT format data, we hope to be useful)

说明：  首先，建立两个模拟信号的数学模型 有用信号 干扰信号。两个信号的中心频率、信号带宽等参数由学生自己选定，要求两个信号的频谱不重叠 分别画出三个模拟信号的时域波形和频谱图；然后，根据x_a (t)的中心频率和带宽，按照奈奎斯特采样定理选择采样频率fs，分别对信号s_a1 (t)、s_a2 (t)、x_a (t)进行时域采样，得到离散信号s_1 (n)、s_2 (n)、x(n)。利用FFT算法分析离散信号的频谱，分别画出三个离散信号的时域波形和频谱图； 接着，设计数字滤波器H(z)，要求该滤波器对干扰信号s_2 (n)的衰减大于40dB。提出滤波器的设计指标，并设计滤波器，给出滤波器的设计结果，绘制滤波器的幅频特性和相频特性曲线，验证滤波器的设计结果是否达到设计指标要求；此外，选择实现数字滤波器H(z)的结构，画出滤波器结构信号流图；然后，将合成信号x(n)输入数字滤波器H(z)，按照所选择的滤波器结构，设计计算机程序计算滤波器的输出响应y(n)，画出y(n)的时域波形和频谱图；(the synthetic signal x (n) is input into the digital filter H (z). According to the selected filter structure, a computer program is designed to calculate the output response y (n) of the filter, and the time-domain waveform and spectrum diagram of Y (n) are drawn)

说明：   模拟退火算法求函数 f(x)的最小值点， 且 l <= x <= u f为待求函数，x0为初值点，l，u分别为搜索区间的上下限，kmax为最大迭代次数 q为退火因子，TolFun为函数容许误差 算法第一步根据输入变量数，将某些量设为缺省值( Simulated annealing algorithm of a function f (x) the minimum point, and l &lt = x &lt = u f is the unknown function, x0 as the initial point, l, u, respectively, lower and upper limits for the search interval, kmax is the maximum q iterations for the annealing factor, TolFun as a function of allowable error algorithm is the first step according to the number of input variables, set default values for certain amount of)

实用的libSVM，说明里面有，挺好用的，欢迎大家试用！多谢大家支持(Practical libSVM, there are very good, welcome to try! I would like to thank you for your support)