India, Dec. 14 -- Imagine landing in Tokyo, walking into a cafe, and confidently ordering in English, only to hear your voice echo back in perfect Japanese, complete with your own tone and cadence. No awkward pauses. No robotic inflexion. Just fluid, human-like conversation. This is not science fiction. It is the new frontier of speech-to-speech translation (S2ST), powered by AI and edge computing.

Behind this seemingly straightforward conversation lie decades of technical advancements, strategic shifts in hardware design, and an increasing demand for effortless global communication.Let us see how we arrived here and what is next.

In its early stages, speech translation was a patchwork of three stand-alone technologies: Automatic Speech...