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基于主成分分析(PCA)的人脸识别系统 利用2D PCA算法求对训练集向量进行降维的降维矩阵，最近邻法测试对测试集识别的精度(pca face recognition)

说明：  灰常经典的边缘检测代码，在图像处理中，必须要掌握(Gray often classic edge detection code in the image processing that must be mastered)

The Capacity of a MIMO channel with nt transmit antenna and nr recieve antenna is analyzed. The power in parallel channel (after decomposition) is distributed as water-filling algorithm

说明：  简单matlab的AF协作仿真，信道为瑞利信道(The AF cooperative communication simple matlab simulation, channel is Rayleigh Road)

说明：  语音识别关键性技术的MATLAB仿真实现.pdf(Voice recognition key technologies MATLAB simulation. Pdf)

这是卡尔曼滤波算法的一个源程序，希望对大家有所帮助。(Kalman filter algorithm which is a source, we want to help.)

implementation of segmentation and edge detection by metlan code is standard//

用matlab打开NC(netcdf)格式的文件；下载后直接解压放到toolbox,然后set path之后就能用了，非常方便(To open the file of netcdf format；Just decompress it and put it into toolbox set path to it )

4) 创建一个名为Complex的类，进行复数的算术运算。复数的形式为： realpart+imaginarypart*i 用浮点变量表示类的private数据。提供构造函数，能够对所声明的该类对象进行初始化。在不提供初始化值的情况下，该构造函数应包含默认值。针对以下功能，分别提供一个public成员函数。 （1）两个复数相加； （2）两个复数相减 （3）用（a, b）的形式打印复数，其中a为实部，b为虚部。 (4) Create a class called Complex, and perform complex arithmetic operations. Plural form: realpart+imaginarypart* i said private data class with floating point variables. Provide a constructor, the object can be declared for the class is initialized. In the case do not provide initialization values, the constructor should contain default values. For the following functions, which provide a public member function. (A) two complex numbers (2) the subtraction of two complex (3) (a, b) in the form of plural printing, where a is the real part, b is the imaginary part.)

语音识别MFCC特征提取matlab代码。 「梅尔倒频谱系数」（Mel-scale Frequency Cepstral Coefficients，简称MFCC），是最常用到的语音特征，此参数考虑到人耳对不同频率的感受程度，因此特别适合用在语音辨识。(Speech recognition MFCC feature extraction matlab code. Mel cepstrum coefficient (Mel- scale Frequency Cepstral Coefficients, MFCC), is the most commonly used to the phonetic characteristics of this parameter given ear to the feelings of different frequencies, so especially suitable for use in speech recognition)