Dolby Stereo

Dolby Stereo
Product typeSound format
Surround sound
Trademark
OwnerDolby Laboratories
CountryUnited States
Introduced1976; 48 years ago (1976)
Related brandsDolby Digital
MarketsWorldwide
WebsiteOfficial website

Dolby Stereo is a sound format made by Dolby Laboratories. It is a unified brand for two completely different basic systems: the Dolby SVA (stereo variable-area) 1976 system used with optical sound tracks on 35mm film,[1] and Dolby Stereo 70mm noise reduction on 6-channel magnetic soundtracks on 70mm prints.[2]

Dolby SVA significantly improves the development of sound effects in films and theorization of sound design by Walter Murch.[1] In 1982, it was adapted for home use as Dolby Surround when hi-fi capable consumer VCRs were introduced, and further improved in 1987 with the Dolby Pro Logic home decoding system.

  1. ^ a b Beck, Jay (2016). Designing sound: audiovisual aesthetics in 1970s American cinema. New Brunswick, New Jersey. ISBN 978-0-8135-6415-9. OCLC 945447753.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ^ Dienstfrey (2016). "The Myth of the Speakers: A Critical Reexamination of Dolby History". Film History. 28 (1): 167–193. doi:10.2979/filmhistory.28.1.06. JSTOR 10.2979/filmhistory.28.1.06. S2CID 192940527.