Crosssec_v2

Data Acquisition数据获取代码，主要从麦克风获取语音信号，然后real time plot输入信号的时域和频域波形图(Data Acquisition Data acquisition code, mainly for voice signal from the microphone, and then real time plot of the input signal in time domain and frequency domain waveform)

时频工具箱 matlab 时频分析(Frequency analysis in the time-frequency toolbox matlab)

统计模式识别、线性或非线性回归以及人工神经网络等方法是数据挖掘的有效工具，支持向量分类（support vector classification，简称SVC）算法是一个很有发展前景的方向。(Statistical pattern recognition, linear or nonlinear regression and artificial neural network approach is an effective tool for data mining, support vector classification (support vector classification, referred to as SVC) algorithm is a promising direction.)

说明：  《MATLAB 7.0编程基础》第3章 （源码实例）主要讲解MATLAB的数值计算("MATLAB 7.0 programming foundation" Chapter 3 (source code examples) mainly on the numerical calculation MATLAB)

for using this code need to use signal toolbox and general toolbox in your matlab Using Daubechies transform to compress the image (showing remaining coefficen of Thresholded Image) and then using Inverse 2D Daubechies transform and finding the SNR to see how well decompression works

法国中央科学研究院和美国RICE大学共同开发了时频分析工具箱（matlab emd） 是一款非常好用的时频分析计算工具，它是分析时变非平稳信号的有力工具，matlab 时频分析工具箱提供了时间域与频率域的联合分布信息，清楚地描述了信号频率随时间变化的关系。 其中主要含有四种函数： 信号产生函数，可以产生不停类型的信号，如Chirp信号，bpsk信号等。 时频分析函数，可以计算线性、Cohen类、仿射类非线性分析值函数，例如短时傅里叶变换（STFT），Gabor变换，谱图，Wigner-Ville（WVD）等。 分析处理函数 图形显示函数，如等高线、三维图等。(Time-frequency analysis toolbox)

说明：  遗传算法示例-求解了一个函数的极值，选择，交叉，变异，输出适应度最高的结果(Example of genetic algorithm - solve the extremum, selection, crossover, mutation of a function, and output the result with the highest fitness)

SCM code, including code, picture, application.

MATLAB在构造应力场 磁场 热学 温度场 研究中的应用(MATLAB magnetic field thermal temperature field study of the tectonic stress field)

this code name is fast Fourier and it is used to implement the fast Fourier algorithm