In a recording and reproducing system. That part of the total noise which varies with signal amplitude.
"I got a chance to listen to the CD last night and I am very, very impressed with the contents. I think you spent a lot of time with the one song I was most interested in, "You + Me = Love", and it really shows. The percussion instruments sound so clear, it makes the song sound fresh and alive. After listening to the same song over and over ..."
