I've just spent ten minutes looking for software that does voice anonymization and have not found anything that is obviously good or convenient. My desired use case is for recording a podcast.

Option 1: the acceptable but non-ideal solution would be to isolate the audio channels, feed the recording from an isolated channel into the software, and get a transformed voice out, which I could then mix. This would preclude real-time privacy, but would allow me to release a podcast without doxxing the guests.

Option 2: an ideal use case would something that worked in real time -- you apply something akin to a filter, so the voice is transformed as the person talks, and it appears in the podcast transformed, so that's what the mixing board 'hears.'

It seems like at least option 1 should exist in a reasonably convenient form. All I've found so far are toy apps (you can transform your voice so it sounds like you've just inhaled a bunch of helium, for instance, or into a chipmunk voice) or super complicated research things that I'd have to figure out how to compile and run. In a pinch I can do this, but surely the world has advanced to a place where a better solution exists?

Also: it's important that whatever the anonymized voice is, it doesn't sound like you're a psychopath hostage-taker from the 1970s. I want a voice that sounds like a real voice, just not the actual person. Anyone have any pointers?