signal-denoising

说明：  该程序试图对具有31个城市的VRP进行求解，已知的最优解为784.1，我用该程序只能优化到810左右，应该是陷入局部最优，但我不知问题出在什么地方。请用过蚁群算法的高手指教。 蚁群算法的matlab源码，同时请指出为何不能优化到已知的最好解(The program attempts to have 31 cities of the VRP is solved, the optimal solution is known as 784.1, I use the program can only be optimized to about 810, should fall into local optimum, but I do not know where the problem is. Please teach master ant colony algorithm used. Ant colony matlab source, also please explain why not optimize the best solution to a known)

录制自己的一段语音，时间控制在15秒到30秒左右；利用wavread函数对自己的语音进行采样，记住采样频率。 （1）画出原始语音信号的时域波形，而后以1秒为间隔，求出每秒数据的功率谱。 （2）根据语音信号特点，分别设计FIR及IIR滤波器，分别画出滤波器幅频和相频特性曲线。用设计的滤波器对信号滤波，画出滤波后时域波形。用sound函数回放语音信号。 （3）求出特征频段语音信号随时间变化的曲线（每间隔0.05秒求一次功率谱）。 (Record your own voice for some time (15 seconds to 30 seconds) use wavread function of the voice samples, remember the sampling frequency. (1) Draw the original speech signal in time domain waveform, and then to 1 second intervals, the data obtained power spectrum per second. (2) According to the voice signal characteristics, FIR and IIR filters were designed, namely to draw the amplitude and phase frequency characteristic curve. With the design of the filters on the signal filtering, to draw the filtered time-domain waveform. Playback with sound function of the speech signal. (3) Find the characteristic band speech signal curve over time (0.05 seconds intervals seeking a power spectrum.))

vc 与 matlab的混合编程，关于调用，执行(VC AND MATLAB )

倒立摆 Simulink模型 机理模型 (Inverted pendulum Simulink model mechanism model)

北大医学部（医学统计学）的课件，里面重点讲解实验数据统计，方差分析，相关与偏相关等方法，这是不确定性实验数据统计必修方法，使用matlab的同学有福了。(PUHSC (Medical Statistics) courseware, which highlight the experimental statistics, analysis of variance, correlation and partial correlation method, which is the uncertainty of experimental data statistics compulsory methods, the use of matlab student blessed.)

Diophantine 丢番图的求解，很经典，也很简单(Diophantine)

本书介绍了并行计算在matlab上的实现，主要针对多核电脑(This book describes the parallel computing on matlab realization, mainly for multi-core computers)

MATLAB 傅里叶分析 快速傅里叶分析 非常正确的资料 值得下载(MATLAB FFT)

matlab呈现混凝土孔隙分布，根据孔径大小看分布情况(Matlab shows pore distribution of concrete)

this file is sift code.