Also known as “synthetic speech” or “text-to-speech technology,” speech synthesis mimics real human voices and deploys them to various interfaces.

With enough data and training, a speech synthesis system can learn the spectral frequency of anyone’s voice and produce someone’s digital voiceprint. One company, Synthesia, uses this technology to dub people through automated facial re-animation.

This will be especially useful for movies with wide, international releases. Actors’ facial expressions and mouths can be reformatted to ensure local languages are synchronized correctly.