Home assistant declared this year to be the year of the voice. There's a ton of development happening to achieve this with full local control.
Take a look at Mycroft
Thought that was a dead project
I thought it still worked, though.
The community forked the core a while back: https://github.com/openVoiceOS/
See also https://neon.ai/, which builds on top of OVOS, and is who the Mycroft company officially passed the reigns to.
If you are not in the mood for doing much tinkering, there is a German electronics manufacturer called TechniSat and they sell a multi-function radio called DIGITRADIO 3 VOICE. It has an offline voice assistant. The voice commands can be used to pause, change audio source, increase volume, etc. The radio deck has okay-ish sound, I wouldn’t call it hi-fi but it doesn’t sound like two tin cans. The function is actually for blind people (I bought one for my grandma who is legally blind), but I guess privacy enthusiasts would find it adequate, too.
Good thing she isn't illegally blind :D. Yeah I'll show myself the door.
Mycroft?
Until someone with more experience finds this thread, I have seen these services recommended: Rhasspy with Home Assistant .io. Rhasspy is entirely offline, and this is Home Assistant's privacy policy.
OpenVoiceOS (OVOS) or NeonAI software (both continuations of the former Mycroft voice assistant) could be useful tools for doing a lot of the Voice Assistant tasks if you want more than just playing music. I'm not an expert on this but if you don't get another response then those are the projects I would dig into.
The Downloads section even lists the RaspPi and microphones they officially support, and their community could give guides on how to make one.
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
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