Science fiction movies have sold us on the idea of spaceships and homes we can talk to. In recent years, voice control at home has become possible thanks to the so-called “smart speakers” from Google, Amazon, and Apple. However, with these devices, almost all processing happens in the cloud, where your voice recordings are processed and translated into sentences and meaning.
Of course, this comes with drawbacks: You don’t have any control over what happens with your voice recordings, posing a significant privacy risk. But, fundamentally, the problem lies even deeper. It makes no sense for your voice to travel through the Internet just to turn on a light in the same room where you are standing. Fortunately, offline voice control is feasible, even using only open source software. Nonetheless,…