matlab-M-S

改进的虚拟激励法，用于大型结构的随机频域计算，在建筑、航天、机械领域已得到广泛的应用。(Improved pseudo-excitation method for the large-scale structure of random frequency-domain calculation, in the construction, aerospace, mechanical field has been widely used.)

考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)

这个文件的名叫Matlab宝典的学习书，本文件详细记录了matlab的学习方法。(Collection of this file called Matlab study book, a detailed record of the file matlab way of learning.)

说明：  hslogic算法仿真,基于MATLAB/SIMULINK的LPC特征提取仿真与分析(Hslogic algorithm simulation, LPC feature extraction simulation and analysis based on MATLAB / Simulink)

This part implements the copypaste forgery detection.

程序实现人脸特征的检测和定位，可以识别并标注眉毛，眼睛，鼻子，嘴巴以及耳朵。能用于单人和多人脸图的检测识别，效果不错。(This is a human facial feature detection and location program. It can be applied to detect both single and multiple face images. )

避免资源死锁.doc避免资源死锁.doc(Avoid resource deadlock. Doc avoid resource deadlock. Doc)

自己搜集的一些变步长lms算法相关论文，希望对大家有帮助。(Some of his collection of variable step size lms algorithm related papers, we want to help.)

Basic Calculation Program For you who need basic program in matlab. enjoy !

原信号分解成IMF后，用此脚本来计算此IMF的瞬时频率(After the original signal into IMF, use this script to calculate the instantaneous frequency of the IMF)