The sound level at which the listener begins to experience physical pain.
"Cristian, You recently transferred a quarter inch audio tape of my old college bluegrass band (The Tomcat Ramblers) into two CD’s. The original recordings were made using vintage equipment over 30 years ago. The tapes had been sitting in my hot and cold garage all this time, which didn’t help. When I got my CD’s back from you – I was ..."