I can imagine. I can not even imagine standing close to 1.
I have always tried to protect my ears. The unmuffled engines I mentioned were very brief runs. I even wear mouse ears when mowing the grass.
But as a teen the CL engines did not have mufflers just an open port.
I do have a near constant ring in my ears now, but it is attributed as a side effect of the meds I am on.
Ken