Heartbeat Audio - Loopable, No Fade - song and lyrics by White Noise Radiance | Spotify
Human Heartbeat Sound Effects - 781 Human Heartbeat sounds for SFX projects | Pond5
Amazon.com : Pet Fit For Life Rechargeable Heart Beat Simulator with USB Cord - Reduce Pet Anxiety with This Heartbeat Sound Machine - Your Cat, Kitten, Dog, or Puppy Will Love It :
Heart Beat Sound for Relaxation - song and lyrics by Sound Therapy Revolution | Spotify
Sensors | Free Full-Text | Heartbeat Sound Signal Classification Using Deep Learning
Mothers Heartbeat - A Calming Female Heartbeat Pulse Sound for Sweet Dreams - YouTube