From which month does the baby start recognizing the mother's voice?

It sounds silly but even before they are born (around 7th and 8th month) the babies can actually started to hear their mother's voice in the womb, through the fluids. When a baby listened to a recording of his mother's voice his heart rate increased because they got excited when hear their mothers' voices. So the newborn babies can actually recognize their mother's voice more than any other sound in the environment. However the newborn will not recognize anyone by sight. Newborns can only see to a distance of about 12 inches ;)