RT Journal
A1 Conti C
T1 BLaufuss sound builder (teaching cardiac auscultation)
JF JAMA
JO JAMA
YR 2012
FD February 8
VO 307
IS 6
SP 617
OP 617
DO 10.1001/jama.2012.103
UL http://dx.doi.org/10.1001/jama.2012.103
AB 
The Blaufuss Sound Builder  application, which can be downloaded to an iPhone or iPad, provides an alternative approach. The uniqueness of this application is that there is correlation with the electrocardiogram and phonocardiogram and that different heart sounds and murmurs can be built around the first and second heart sound. For example, the user can add an ejection sound, a midsystolic click, third heart sound, fourth heart sound, or an opening snap. In addition, holosystolic, early systolic, midsystolic, and late systolic murmurs as well as early diastolic, mid-diastolic, and presystolic murmurs can also be added (built) onto the first and second sound. Thus, for example, mitral stenosis can be simulated by adding an opening snap, a mid-diastolic rumble, and presystolic murmur to the first and second heart sound. The quality of the sound when listening with earphones is excellent and simulates the real thing.