Heartbeat sound effects

Baby: girl, 14 weeks old, having fun

2870 615

Heart rate monitor: unstable signal

4144 1146

Horror: double heart strike (fast)

4235 1124

Horror: double heart beat (slow)

4724 1048

Boy, 18 weeks

4097 1142

Boy 18 weeks whimpering

4301 932

Boy 18 weeks, hysterical crying

3631 970