@baldur
What I don't get is, audio transcription is a solved problem. We have software that does a pretty good job, with reasonable energy and resource use and basic human supervision; my partner used to have a job proofreading auto-transcriptions.
Best part is, when it can't make something out, the legit transcription software goes "{UNINTELLIGIBLE}" and the human proofreader fixes it. It never invents stuff.
We don't need a way to do it worse with bigger resource use and sneaky errors.