Heartbeat sound effects

Baby: girl, 14 weeks old, having fun

2673 611

Heart rate monitor: unstable signal

3645 1137

Horror: double heart strike (fast)

3833 1078

Horror: double heart beat (slow)

4206 1009

Boy, 18 weeks

3873 1142

Boy 18 weeks whimpering

3508 930

Boy 18 weeks, hysterical crying

3239 970