TT

Matlab finite element finite guide book

相关噪声模型和相关函数计算 相关函数是平稳随机过程的重要数字特征，根据观测记录的信号波形或者一串数据序列，来估计该信号的自相关函数是信号处理的重要方法之一。(correlation noise model and correlation function)

This is a code for Noise level estimation in MATLAB

aplication full source

matlab po slovensky nieco

对心电信号进行滤波处理后，计算RR间隔，进而求得瞬时心率和心率变异系数，通过对RR间隔的变化曲线进行频谱分析，从而求得各个自律神经活动的评价指标(After filter processing is performed on the ECG, the RR interval is calculated, and then seek the instantaneous heart rate and heart rate variability coefficient, spectral analysis through the curves of changes in the RR interval, to thereby obtain the evaluation index for each of the autonomic nervous activity)

说明：  此程序描述基于最大似然准则的频率估计。该算法可以估计短突发信号的载波频偏，这种算法估计的精确度高。(This procedure describes the frequency estimation based on the maximum likelihood criterion. This algorithm can estimate the carrier frequency offset of the short burst signal, and the accuracy of this algorithm is high.)

K-nearest neighbors 搜索 聚类时经常使用的一种方法 国外网站转载( The following utilities are provided: - Nearest neighbor - K-Nearest neighbors - Radius Search They al supports N-dimensions and work on double, it is possible to choose if return the distances. Here is a time comparison with a vectrized m-code: N=1000000 number of reference points Nq=100 number of query points dim=3 dimension of points k=3 number of neighbor tic [idc,dist]=BruteSearchMex(p ,qp , k ,k) MEX toc tic [idc,dist]=knnsearch(qp,p,k) VECTORIZED M-CODE toc p=rand(N,dim) qp=rand(Nq,dim) Output: Elapsed time is 0.962640 seconds. Elapsed time is 18.813100 seconds. )

GM11灰色预测模型，通过生成数据的gm(1,1)模型所得到的预测值的逆处理结果(Grey Forecasting)

小波域内选择能量较大的系数嵌入数字水印的程序(Digital watermarking based on block energy selection)