Classy , vor einem Monat I imagine the measurement is something like "perception of sound to the human ear". A rock concert is generally very loud and whether you're 5 feet back or 30 feet back from the stage won't make a huge difference
I imagine the measurement is something like "perception of sound to the human ear". A rock concert is generally very loud and whether you're 5 feet back or 30 feet back from the stage won't make a huge difference