To shift a sound image as desired between the positions occupied by the loudspeakers in stereo or quadraphonic reproduction.
"Just to say that you've done an incredible Job!!!. I really want to thank Dr. Cristian Coban for his GREAT WORK. The restoration of the bird's song that was mixed so deeply with terrible background noise which included loud humming, cracks and other matter, was truly amazing!. This song was recorded from a 1950's radio so you can imagine how ..."