LABVIEW对心音信号的研究处理等等

采用奇异谱主分量分析方法从病理心音信号中提取杂音成对四种常见的病理心音信号进行奇异谱分析，得到各主分量和经验正交函数，选择合适阶次重构正常心音成分和杂音成分。分。-The principal component analysis singular spectrum extracted from the pathological heart sound signals murmur pairs four common pathological heart sound signals Singula

滤除心音噪声，同时保证心音信号不失真。通过窗函数对心音信号进行低通滤波。-to get rid of the noise of heart sound

通过小波阈值去噪，选取db5小波进行6层分解，对心音信号进行去噪-By wavelet thresholding, select db5 wavelet decomposition of six layers of the heart sound signal de-noising