(This is my first post so let me know if I should be adjusting anything)
Here was one project that changed an Amazon Echo's software:
https://hackaday.com/2021/03/22/amazon-echo-gets-open-source-brain-transplant/
"The Porcupine project provides the wake word detection, speech samples are broken down into actionable intents with voice2json, and the responses are delivered by the venerable eSpeak speech synthesizer."
Can you just set up this kind of thing to run on your computer and has anyone done something like this?
A list of some other tools: https://www.ubuntupit.com/best-open-source-speech-recognition-tools-for-linux/
(edit: added cover picture and post picture)