My son is approx 5 months old. He startles at voice of ours. He plays nicely with the toys with sound and light but when we suddenly say something to him, he gets shocked and in fear and starts crying

A. Maybe your sound is loud and your child is not liking it maybe your you know sometimes when you talk your sound can be little rude harsh or loud and maybe the child is not comfortable with that so you call your child or say something