Heartbeat sound effects

Baby: girl, 14 weeks old, having fun

2806 612

Heart rate monitor: unstable signal

3899 1139

Horror: double heart strike (fast)

4044 1094

Horror: double heart beat (slow)

4488 1022

Boy, 18 weeks

4030 1142

Boy 18 weeks whimpering

3936 931

Boy 18 weeks, hysterical crying

3495 970