A murmur is either systolic, diastolic or continuous throughout systole and diastole. Remember: Systole occurs between the S1 and S2 heart sounds, while diastole occurs between S2 and S1.

Perhaps it’s the murmur of people talking ... the mid-1940s all around the world. The audio above is from a fish chorus found in Australia. But the sounds of fish communicating with each other ...