At around 18 weeks of pregnancy, your unborn baby will start being able to hear sounds in your body like your heartbeat. At 27 to 29 weeks (6 to 7 months), they can hear some sounds outside your body too, like your voice. By the time they are full term, they will be able to hear at about the same level as an adult.

I believe that they can.

Studies have shown that they do recognise voices and music etc.

I’ve heard that they can recognise voices, noises, music etc.

I have heard that this is true and studies have been done proving that babies can often recognise the sounds of their parents voices which helps them in bonding after they are born. Lots of books say that it is good to read out loud so that the baby can get used to the sound of you speaking.