The sound of your voice is comforting to your baby. Talking, singing or reading out loud to your baby will help him recognize your voice. Babies are very interested in new sounds. And just like older children, they also get used to noises quickly and can tune them out.
Signs your baby is responding to a new sound:
Pauses in sucking or fussing
Widening their eyes
Check with your baby’s doctor if:
Your baby does not respond to noises like a whistle, hand clap or horn.
Does not begin looking around for the source of a sound by age 3 months.