How do face masks change the way we communicate?

Starting this week it is mandatory to wear face masks in all shops and public transport in Germany. But how does this change the way we communicate? Our Senior AI Advisor and co-founder Christian spoke with the dpa about it (only available in German, but Google Translate works nicely): https://www.apotheken-umschau.de/Coronavirus/Die-Maskenpflicht-und-das-Miteinander—Was-aenderts-558447.html