Well, I have heard of parents talking to babies in the womb and that the babies recognize their parents’ voices afterwards... :-)
When my youngest was born, one of the nurses was in the room and holding my daughter so that she couldn’t see me, and was talking to her.
The nurse then said something to me and I replied. My daughter, only 2-3 days old at that time, whipped her head around and stared right at me.
We were both very surprised but it was clear that my daughter recognized my voice.