Dubbing (synthetic voice)

Dubbing replaces the voices in a video with others in another language. Traditional dubbing is done by actors in a studio, fitting the script to lip movements. Synthetic-voice dubbing uses a text-to-speech system that reads the translation to the subtitle timings.

A common variant is voice-over: the original voice can still be heard quietly underneath the translation, as in many documentaries and interviews.

Echo dubs from a translated subtitle track, with synthetic voices in Spanish, English, French, Italian and Brazilian Portuguese, one voice per speaker. Each sentence starts at its time; if it doesn’t fit, it’s sped up slightly. You can keep the original voice underneath at 15% or 5%, or remove it.

Echo doesn’t clone anyone’s voice: the voices are synthetic and generic. For commercial or brand pieces, professional dubbing is still the benchmark.