Real resting heartbeat, self-recorded by my friend andy jack. Only effects used on this is eq to remove noise. Public domain, but if you wanna give credit then credit "andy jack".
Yidan's heartbeat recorded with a homemade contact mic and added eq and compression. If you're willing please share a link of how you used this sound!.
Took a sample of a tr909 kick drum, stretched it, added some reverb, bass boost, compression split the track and offset it slightly to create a left to right pulse.
Recorded with a commercially available fetal heartbeat monitor, placed on a young female adult who has heart palpitation issues after rigorous exercise.
My heartbeat, recording with low eqing and a shure sm58. There's some moving of a microphone and a little bit of breathing. Towards the end i take a sample of my computer.
My heartbeat recorded using a shure dynamic microphone and adobe audition. Sounds very dark, my sunblind vibrates when i'm turning the volume up far enough :d.