My 5.5 month baby is not turning her head or eyes to sounds. If I talk, make funny noises beside or also further away from her, she seems to not hear me, her hearing test was good. (did oae and recently AABR). She occasionally reacts to sudden loud noise. Also if I make sound with rattle she usually doesn't look. She is also not making much sounds yet. When did your baby reliably, visibly react to sound, your voice?