Finally, a third murmur, known as an Austin Flint murmur, may be detected. This is a soft, rumbling, low-pitched, late diastolic murmur which is heard best at the apex.
[med.ucla.edu]
Auscultation reveals an S3 and a high-pitched, decrescendo early diastolic murmur. Another characteristic diagnostic finding is widened pulse pressure.
[amboss.com]
Diastolic murmurs heard in other diseases besides AR differ in their characteristics. The murmur of mitral stenosis is distinct from the murmur of AR.
[clinicaladvisor.com]