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.