The history of speech recognition can be traced back to 1961 when IBM introduced the first ever speech recognition system dubbed as Shoebox that was able to recognize 16 words and digits 0 through 9. It was termed as Shoebox because it was approximately the size of a standard American shoebox. But the speech recognition technology has completely evolved over the decades.
Today, we have voice-activated assistants, which are available in the form of both as a standalone device like Amazon’s Alex and as an app like Google Assistant, which can be installed on smartphones. We have Siri, which comes with iPhone smartphones. Cortana is another example of voice-activated virtual assistant that comes with Microsoft Windows OS.