模糊c均值算法MATLAB实现

matlab编写的水准网平差程序，由测量数据可计算水准网平差结果，得到不错的水准网数据(levelling network computation by use of surveying datas and TSL application)

Color space source code matlab

Login in GUI using database SQL to verification user and password

船舶MMG模型源码，运用动态仿真方法，模拟出船舶航行所形成的旋回圈(Ship the MMG model of source code, the use of dynamic simulation methods, simulation cycles circle formed by a ship sailing)

autocov computes the autocovariance between two column vectors X and Y with same length N using the Fast Fourier Transform algorithm from 0 to N-2. The resulting autocovariance column vector acv is given by the formula: acv(p,1) = 1/(N-p) * sum_{i=1}^{N}(X_{i} - X_bar) * (Y_{i+p} - Y_bar) where X_bar and Y_bar are the mean estimates: X_bar = 1/N * sum_{i=1}^{N} X_{i} Y_bar = 1/N * sum_{i=1}^{N} Y_{i} It satisfies the following identities: 1. variance consistency: if acv = autocov(X,X), then acv(1,1) = var(X) 2. covariance consistence: if acv = autocov(X,Y), then acv(1,1) = cov(X,Y)

选取windows系统自带的ding.wav信号作为分析对象，在Matlab软件平台下，利用函数wavread对音频信号进行采样，记住采样频率和采样点数，听一下原始声音sound(y, fs, bits)。 （2）音频信号的频谱分析，先画出音频信号的时域波形；然后对音频号进行快速傅里叶变换fft(y,N)，N取32768，画出信号的频谱特性，加深对频谱特性的理解。 （3）根据频谱，反演时域特性，画出时域波形。寻找幅值最大的两个频率，此频率除以fft点数在乘以采样频率就是信号的主频，即可合成信号的时域图形，听一下声音。 （4）对原音频信号进行1024点的分段付立业分析meshgrid （5）根据主要频线合成音频，并画出时域图形，试听合成效果。 （6）采用线性插值（linspace）和傅立业反变换(fliplr, ifft)分别合成音频，并画出时域图形，试听效果。 (err)

巴特沃斯高通滤波matlab编程，很实用，(Butterworth high-pass filter Matlab programming, very useful, thank you)

SCJP exam dumps. useful for exam learners

基于svpwm的永磁同步电机伺服系统仿真(The simulation of Permanent magnet synchronous motor servo system)

说明：  DS证据理论，用于信息融合，融合不同特征之间的信息 四种信息熵的计算程序(DS evidence theory for information fusion, fusion of information between different features Four Computing Procedures of Information Entropy)