In this paper a characteristic heart sound calculation method is described for the
sensitive detection of heart murmur related to patent ductus arteriosus (PDA) in case
of preterm newborns. The proposed algorithm is capable of indentifying the systolic
murmur with 90°% sensitivity and 60°% specificity, which is a relevant step towards
parameter extraction and finding a relationship between heart murmurs an important
clinical parameters of the PDA.
