Fig. 2From: Diagnosis of cardiac abnormalities based on phonocardiogram using a novel fuzzy matching feature extraction methodFlow chart of feature extraction in this study. Template PCG signal can be obtained from training PCG set. Then, Template PCG signal were utilized to optimize a group of initial Gaussian wavelets, and fuzzy convolved features of template PCG signal and test PCG signal can be computed. Further, we can have fuzzy matching degree and energy featuresBack to article page