A deaf dancer friend uses an app, I think from Google. We’re often in discussion/teaching circles in dance classes. Seems to work well.
“Real time” is relative though. Conversation latency matters in roughly the tens of milliseconds and it’s certainly not near that fast.
The group has to be attuned to having a turn for her to speak. She’ll pretty often come in at the same time as someone else, missing those subtle sounds of someone else about to talk. The emergent rule is “tie goes to her”.
This all works well in the mindful scene of Berkeley experimental dance workshops. Maybe she’d get steamrolled in a competitive finance office or something.