I have it (played percussion as a kid). I find just relaxing and acknowledging the ringing as if I was meditating, not fighting it and letting it do what it will helps it pass. It will sort of grow really loud like a wave, then as I continue relaxing will fade.
sorry. Yeah, the parent poster did it to me. I didn't mean to pass it on. Don't worry. Put on Fugazi and smoke a joint... you won't remember this in a couple hours.
Oh-oh, I clearly have done my share of bad things for the day. Did not mean to, apologies. Nothing really triggers this thing for me anymore, as it is always there.