A spectrogram is a visual representation of the spectrum of frequencies of a signal as it varies with time. br Quantitative analysis of an auscultation signal can aid physicians to identify abnormal heart condition. br This project aims at using the auscultation signal from a normal patient( with no heart conditions) and compares with a PDA (Patent Ductus Arteriosus) patient. br br There is a difference in their respective spectrogram and can be used by physicians to accurately diagnose any heart condition.