centered_difference_numerical_diff

MATLAB常用函数，可以方便我们的编程和查找，(MATLAB common functions that can facilitate our programming and find,)

DCT- discrete cosine transform. compression ratio and psnr value are calculated

数字信号处理中的频谱泄露的程序，有助于帮助理解信号滤波处理的内涵。(Digital signal processing procedures spectral leakage, signal filtering helps to help understand the meaning.)

调试通过可以使用，可以实现模式识别领域的数据的分类及回归，代码里有很完整的注释和解释，信号处理中的旋转不变子空间法，最大似然（ML）准则和最大后验概率（MAP）准则。( Debugging can be used, You can achieve data classification and regression pattern recognition, Code, there are very complete notes and explanations Signal Processing ESPRIT method, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion.)

学习APF过程中的读书笔记和MATLAB仿真模型(Reading notes and MATLAB simulation models in learning APF process)

gmres算法的一个特殊形式，用来求解大型稀疏矩阵方程(gmres algorithm a special form used to solve large sparse matrix equation)

数字语音是信号的一种，我们处理数字语音信号，也就是对一种信号的处理，那信号是什么呢？ 信号是传递信息的函数。离散时间信号——序列——可以用图形来表示。 按信号特点的不同，信号可表示成一个或几个独立变量的函数。例如，图像信号就是空间位置（二元变量）的亮度函数。一维变量可以是时间，也可以是其他参量，习惯上将其看成时间。 (Digital Voice is a signal that we deal with digital voice signal, that is, the processing of a signal, that signal what is it? Signal is a function of transmitting information. Discrete-time signal- sequence- can be used to indicate the graphics. According to the different signal characteristics, signal or can be expressed as a function of several independent variables. For example, the image signal is the spatial location (binary variables) of the brightness function. Variables can be one-dimensional time and other parameters can be, habits will be time to treat it as a.)

说明：  本书详细介绍了偏微分方程的MATLAB解法，是解决偏微分方程的一种有效的数值解法。(The book details the MATLAB Solution partial differential equations, partial differential equations to solve an effective numerical method.)

采用卡尔曼滤波器滤除语音信号中的有色噪声，采用Matlab实现，并给出了实例(Kalman filter to filter the speech signal colored noise, using Matlab to achieve, and gives an example)

转差频率矢量控制源程序，在实验平台上能够稳定运行(Slip frequency vector control source code, in the experimental platform can stable operation )