I can be alone in a crowd because, while I can hear people talking in a room with a lot of background noise, I can't follow the conversation. I can't understand what they are saying.
That's the same issue I have, just without the ringing, so far. It's bad enough that if I'm watching TV and my wife turns on the dishwasher, on the other side of the dining room, I have to turn the TV way up to be able to hear anything more than gibberish. Hell, sometimes just the background music in a show makes it hard for me to hear what's being said. In crowds, I still haven't figured out how many times I should ask, "Huh?" before I just pretend to know what someone said, use their facial cues to laugh or not and them just move on. Haha...
What's stupid is I can hear most things very well. Even very slight sounds. I just can't separate the sounds from each other when they're all jumbled up. AND, my 15 year old mumbles at me. That drives me fucking nuts, and she gets irritated with me always making her repeat stuff. If she'd just speak up and not say random shit with background noise, we'd be fine!