Heartbeat sound effects

Baby: girl, 14 weeks old, having fun

2749 612

Heart rate monitor: unstable signal

3776 1138

Horror: double heart strike (fast)

3932 1084

Horror: double heart beat (slow)

4384 1013

Boy, 18 weeks

3991 1142

Boy 18 weeks whimpering

3719 931

Boy 18 weeks, hysterical crying

3391 970