Heart valve disease screening system — PC based

This paper describes an offline PC based system to classify normal and abnormal heart sound signals from heart sound audio files. The system reads the selected heart sound signal, automatically segments the heart sound signals into samples, extract the feature of each samples using cross-correlation method and classify the samples using the hierarchical multilayer perceptron network. Matlab GUI is used to create the system interface in PC platform. The system gives high percentage of screening specificity (96.3%), sensitivity (92.59%) and accuracy (94.44%).