The CirCor DigiScope Phonocardiogram Dataset

A total number of 5282 heart sound recordings were collected from the main four auscultation locations of 1568 patients, aged between 0.1 and 356.1 months (mean ± STD = 73.4 ± 50.3 months), with a duration between 4.8 to 80.4 seconds (mean ± STD = 22.9 ± 7.4 s), summing up to more than 312 hours of recording. For the first time, each cardiac murmur in the dataset has been annotated in detail, in terms of timing, shape, pitch, grading, quality, and location, by using a semi-supervised annotation scheme. The annotations were performed by voting between three state-of-the-art machine-based algorithms. Two independent experts later studied the consensus and mismatches between the algorithms beat-by-beat, and performed a manual annotation whenever the algorithms had disagreed. To date, the dataset is the largest pediatric heart sound dataset and it paves the way to a deeper research on the topic of auscultation-based health recommendation systems. The dataset is available online for public research on PhysioNet.