They will stop moving and listen when someone is talking, and move again when there is a pause. The first sounds that are not crying are called cooing. While these sounds do not appear to communicate much, they allow the baby to practice making a variety of sounds. Soon the baby begins to babble . The sounds the baby produces are the sounds that form the basis of most languages.
All babies babble alike.
Even babies who are born deaf make the same sounds as babies who can hear. Understanding of language comes before language production. Then the first words appear. These first words are similar in most languages and are made up of sounds that are easy for the baby to produce. Eventually, the words become more recognizable as the sounds that are part of the language that the baby hears everyday.