What did ancient Egyptians sound like when they talked? Now we know thanks to CT scans of the voice box of one well preserved mummy. The scans were converted into a CAD design and then created in plastic with a 3D printer. An artificial air system and mouth was attached to the voice box and then recorded.
You can hear a real mummy moan by visiting the site at: https://www.sciencenews.org/article/3d-printed-vocal-tract-ancient-mummy-voice-speak-beyond-grave