Computational-Physics-using-MATLAB_2

小波神经网络3 一共是3个哦(Wavelet neural network is a total of 3 Oh 3)

Genetic multi-stage fuzzy PID controller with a fuzzy switch

Yagiuda antenna pattern by matlab

层次分析法计算权重，判断矩阵一致性检验的Matlab源程序代码(Analytic Hierarchy Process (AHP) calculates weight and judges Matlab source code for matrix consistency checking)

说明：  用于数字图像相关方法中散斑质量评价，评价标准之一是平均灰度梯度，此压缩包中包含了如何形成高斯分布的数字散斑以及用于计算不同子区大小的平均灰度梯度值(For speckle quality evaluation in digital image correlation method, one of the evaluation criteria is the average gray gradient. The compression package contains how to form a Gaussian digital speckle distribution and the average gray gradient value used to calculate the size of different subareas)

用matlab制作的红色小球沿螺线运动的动画(using Matlab produced by the small red balls along the spiral movement of animation)

对信号进行小波包分解，得出能量分布图，然后根据分解结果处理信号！(Wavelet packet decomposition of signals obtained energy distribution and signal processing based on decomposition!)

基于MFCC的语音识别仿真系统，文件中带有完成语音识别训练的源代码.(Simulation-based MFCC speech recognition system, the file with complete source code for speech recognition training.)

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

RDTSC指令的使用以及相关问题，详解RDTSC命令的使用。(RDTSC instruction for use, and related issues, Xiang Jie RDTSC command.)