Offline Speech-to-Text on Raspberry Pi Zero

While the device you see in the video is the same size as a Pi Zero, it clearly isn't one. You can see what is undoubtedly a Pi Zero attached directly beneath it (and the video is showing Raspbian). They probably should specify if this is a pHAT instead of making people guess.

The software samples, plus the object libs are on github. Given the size, I'm sure the library itself isn't very interesting, and all the speech transcribing data is on the board itself.

Either way, I wonder if the guy noticed it spelled one of his words wrong. Still a good error rate given his unusual accent, but usually a product demo would avoid showing off errors like that.