Abstract: Existing infant warming solutions comprise a bedding element, a thermoregulation element and an element to produce sounds beneficial for the infant. The most beneficial among these sounds is the heartbeat of the infant's own mother. Capturing the heartbeat well enough to enable recording and accurate, realistic replay usually requires the use of a stethoscope-like instrument by a trained person and is an error-prone process for an untrained one, making it impractical for mass use. This invention improves the state-of-the-art by using an easy-to-capture but imperfect signal, for example, from a photoelectric sensor placed on the mother's finger, to still produce a realistic simulated heartbeat sound with the mother's heartrate. This makes the invention a suitable choice for infant warming solutions intended for mass use. The invention comprises an analog signal sampling module, a logic and memory module, and a sound replay module for the audible replay of electronically stored sounds.