Dolby Noise-reduction System

==Dolby System==
===1973–1992===
DolbySystemLogo.jpg
DolbySystemRegistered.jpg|Version with registered symbol
IMG 20200407 0002.jpg|Odd variant (1990s)
==Dolby B NR==
===1979–present===
Dolby-b-noise-reduction-1-logo-svg-vector.svg|Vertical version.
Dolby-b-noise-reduction-1.png|Alternate vertical version. Mostly used on Paramount VHS releases of TV shows and movies, and releases from MCA and Universal Studios until 2007.
Dolby BNR logo (Vertical Version with small letters).svg|Vertical version with small letters, seen on MCA/Universal and Universal Studios VHS releases until 2007.
===2007–present===
==Dolby B NR HX Pro==
===1983–present===
===2007–present===
==Dolby B-C NR==
===1979–2007===
==Dolby S NR==
===1984–2007===
==Dolby S NR HX Pro==
===1986–1991===
==Dolby B-C-S NR==
===1991–1995===
==Dolby B-C-S NR HX Pro==
===1995–1996===
==Dolby SR==
===1996–2007===
Category:Dolby
Category:Technology
Category:Cinema
Category:1973
Category:Defunct