The_introduction_to_application_of_Matlab

基于matlab来描述静电场的分布，基于matlab描述电偶极子的分布。(Matlab-based to describe the distribution of electrostatic field, matlab-based description of the distribution of electric dipole.)

基于自建数据库的音乐识别及检索软件 ； 利用Matlab开发软件, 通过抓取录入歌曲的音高(pitch tracking)绘出声音的频率变化并进行降噪和润滑（smoothing）处理 与数据库中歌曲的频率变化图比对，计算出相似度top10的歌曲并显示。 (Based on self-built of music recognition and retrieval software developed using Matlab software, change the pitch of a song by crawling entry (pitch tracking) plots the frequency of the sound and noise reduction and lubrication (smoothing) processing Frequency changes in the diagram songs than calculate the similarity top10 songs and displayed.)

说明：  VRFT，pID整定的先进算法。matlab程序。该方法的引用文献在说明中提及，可运行检验。(A direct PID tuning method.)

基于matlab的语音回波抵消系统仿真设计中的部分程序(Voice echo cancellation system based on matlab simulation design of the part program )

通过编程，利用变步长的求积公式求解积分，具有较高的精确度(By programming, the integral can be solved by the quadrature formula with variable step size, which has high accuracy.)

说明：  用窗函数法设计一个能对模拟信号进行滤波的线性相位FIR低通滤波器。抽样频率为 kHz，通带截止频率为 kHz，阻带截止频率为 kHz，要求阻带最小衰减 dB。为了降低运算量，所设计滤波器的阶数要尽可能的低(With the window method to design a filter to the analog signals of linear phase FIR low-pass filter. Sampling frequency is kHz, passband cutoff frequency kHz, stopband cutoff frequency of kHz, the minimum required stopband attenuation dB. To reduce the computation, the order of the filter designed to be as low as possible)

说明：  混合整数二次规划(MixedInteger QuadraticProgramming,MIQP)问题最优化问题源代码(source code of MIQP problem)

说明：  BP网络仿真实例参考:包含BP网络设计实例及仿真源程序.(BP network simulation reference: BP network design contains examples and simulation source.)

vs2010调用matlab.m文件生成的lib,dll,h文件，并进行参数的传递(vs2010 calling matlab.m files generated lib, dll, h file and pass parameters)

用matlab编写的程序，实现图像的3*3、7*7、9*9算术均值滤波和几何均值滤波，文档中有matlab源码以及运行结果截图(Programs written with matlab, image 3* 3,7* 7,9* 9 arithmetic mean filter and geometric mean filter, documentation and operating results have matlab source screenshot)