Dolby System[]
1973–1992[]
Version with registered symbol
Odd variant (1990s)
Dolby B NR[]
1979–present[]
Vertical version.
Alternate vertical version. Mostly used on Paramount VHS releases of TV shows and movies, and releases from MCA and Universal Studios until 2007.
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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[]
| Dolby Atmos | Dolby Cinema | Dolby Vision | Dolby Voice Dolby Audio: Dolby Digital (Plus | EX | Surround EX | 5.1 | Stereo Creator) | Dolby E | Dolby Headphone | Dolby Noise-reduction System | Dolby Pro Logic (II | IIx | IIz) | Dolby Surround (7.1 | Pro Logic | Virtual) | Dolby TrueHD Sponsorships: Defunct:  |