Editing Dbx (noise reduction) (section)

==dbx for television==
dbx-TV noise reduction, while having elements in common with Type I and Type II, is different in fundamental ways, and was developed by Mark Davis (then of dbx, now of Dolby Labs) in the early 1980s.

dbx-TV is included in [[multichannel television sound]] (MTS), the [[United States|U.S.]] [[standardization|standard]] for [[stereophonic sound|stereo]] [[analog television]] [[transmission (telecommunications)|transmission]]. Every TV device that decoded MTS originally required the payment of [[royalties]], first to dbx, Inc., then to [[THAT Corporation]] which was spun off from dbx in 1989 and acquired its MTS patents in 1994; however, those patents expired worldwide in 2004.<ref>[http://www.thatcorp.com/dbx/timeline.html dbx-TV Timeline (THAT Corporation)] {{webarchive|url=https://web.archive.org/web/20110716215027/http://www.thatcorp.com/dbx/timeline.html |date=2011-07-16}}</ref>