ScriptforcomputingtheSNRimprovementi1

孙志忠书：偏微分方程数值解，第三章第四节，抛物方程的Crank-Nicolson格式(Crank-Nicolson Type)

对图像求拉普拉斯变换，分别使用中心为-4、-8其他值均为1的拉普拉斯滤波器(Laplace transform of image, Laplace filter respectively using the center for- 4、-8，other value for 1)

说明：  室内麦克风阵列声源定位算法研究和实现预处理和定位部分代码(Indoor microphone array sound source localization algorithm research and implementation of pre processing and positioning part of the code)

基于retinex的图像增强算法，多尺度msr，已验证(Image enhancement algorithm based on retinex, multi-scale msr, has been verified)

时间控制小程序，主要用于控制软件的时间管理，可一参考(time control of small procedures, mainly used to control the time management software, a reference to the masses)

利用傅里叶变换，从理论上实现了混合信号的频谱分析，能够反应信号的真实频率及其幅值 (Fourier transform theory, mixed-signal spectrum analysis, to reflect the true frequency and amplitude of the signal )

利用MATLAB分析圆环电流在其平面内的磁场分布(Using MATLAB analysis of the magnetic field distribution of the ring current in its plane)

图像频谱分析MATLAB程序，适合于所有需要的波形(Image spectrum analysis MATLAB program)

code for shell command implementation(code for shell peogramming)

介绍数字滤波器的定义、分类及实现方法。讨论IIR滤波器、FIR滤波器的设计方法以及如何运用MATLAB中的DSP Blockset工具箱设计数字滤波器。(Introduce digital filter definition, classification and realization. Discussion of IIR filter, FIR Filter design and how to use the DSP Blockset MATLAB toolbox to design digital filters.)