exam3_2

kasami code by matlab

利用形态学方法，给ECG信号去基线漂移。基线漂移对心电影响很大。利用形态学上的腐蚀和膨胀，可以处理，但缺点是呈阶梯状，对原始信号有影响，这个是自己编的，未用matlab上的函数。(Morphological method to the ECG signal to baseline drift. Baseline drift on the ECG. Morphological erosion and dilation can handle, but the drawback is that the ladder-like effect on the original signal, this is their own series of unused matlab function.)

对数据进行分组：通过该程序在matlab将一组数据随机的分为两组，用于建模计算(devide into two groups)

LMS Classical algorithm

计算矩阵各点之间的距离，并选取合适的点，适用于大型矩阵的计算(Calculate the distance between the points of the matrix)

viterbi硬判决代码，用于卷积码译码(hard decision viterbi code for decoding convolutional codes)

用于心电信号的处理，有软硬阈值滤波，FIR及IIR滤波，还有空域相关滤波！需要的可下载(the filter for ecg!)

在语音识别系统中，端点检测的目的是要区分语音段和非语音段 ,它在自动语音识别中起着关键作用(In speech recognition systems, the purpose of endpoint detection is to distinguish between voice and non-voice segment, which in automatic speech recognition plays a key role)

sampencandApEn.m 为证明 样本熵 较 近似熵 更准确的程序 fast_ApEn1.m sampenc.m 为sampencandApEn.m的子程序(sampencandApEn.m sample entropy to prove more accurate than the approximate entropy procedure 3.fast_ApEn1.m sampenc.m subroutine is sampencandApEn.m)

说明：  采用PDE法进行灵敏度过滤，实现悬臂梁的拓扑优化(Sensitivity filtering using PDE method to realize topology optimization of cantilever beam)