Same here, had it since I was a child. Like you, I assumed it was the sound of silence, or maybe it was so quiet I could hear the blood flowing in my ears or wh

Same here, had it since I was a child. Like you, I assumed it was the sound of silence, or maybe it was so quiet I could hear the blood flowing in my ears or whatever. Until recently I could only notice it in a quiet environment, but here lately I can hear it with other stuff going on too. Doesn't help that every industry I find myself working in revolves around loud machinery (fabrication, carpentry, servers) not to mention music (anyone been to an Electric Wizard show?). I'd say I'm teetering on the line of having it "affect my life" in a meaningful way. Sometimes I do lose sleep, but I think maybe insomnia just makes it more noticeable. I've started noticing "patterns" with it, almost like I can hear which sounds caused the most damage. Circular saw on metal roofing seems like the biggest cause of recent damage as far as I can tell, if my theory about the sounds being similar is correct.