The Dolby SR (Spectral Recording) noise reduction format was developed by Dolby Laboratories and has been in common use in professional audio since 1986 and in cinema audio since the late 1980s.[1] It is a revised version of Dolby's earlier formats, combining aspects of Dolby A, B and C (e.g., sliding band and fixed band companders) to improve the dynamic range (i.e., the range in decibels between peak level and noise floor) of analogue recordings and transmissions by as much as 25 dB.
A Dolby SR card for a multitrack station.First prototype of Dolby SR encoder / decoder, built by Ray Dolby on perfboard.
Dolby SR is used in many modern professional audio analogue (i.e., tape) recordings by recording and postproduction engineers, broadcasters, and other audio professionals. It is used as the optical analog format on almost all 35mm film release prints, and is always the accompanying optical analog format when Dolby Digital is present.
Dolby SR was originally implemented in Dolby's Cat. 280 card, which was pin-compatible with the Cat. 22 A-type noise reduction card. Thus, devices that took the Cat. 22 card could be upgraded from A to SR by replacing the Cat. 22 with the Cat. 280. The Cat. 280 card functions in many devices including Dolby's Model 361 frame. Some Dolby Cinema processors require a special version, the Cat. 280T, which functions for decoding (playback) only.
dolby, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, april, 2021, learn, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Dolby SR news newspapers books scholar JSTOR April 2021 Learn how and when to remove this message The Dolby SR Spectral Recording noise reduction format was developed by Dolby Laboratories and has been in common use in professional audio since 1986 and in cinema audio since the late 1980s 1 It is a revised version of Dolby s earlier formats combining aspects of Dolby A B and C e g sliding band and fixed band companders to improve the dynamic range i e the range in decibels between peak level and noise floor of analogue recordings and transmissions by as much as 25 dB A Dolby SR card for a multitrack station First prototype of Dolby SR encoder decoder built by Ray Dolby on perfboard Dolby SRProduct typeSurround soundOwnerDolby LaboratoriesCountryUnited StatesIntroduced1986Related brandsDolby Digital 1986 present MarketsWorldwidePrevious ownersUltra StereoWebsiteDolby official website Dolby SR is used in many modern professional audio analogue i e tape recordings by recording and postproduction engineers broadcasters and other audio professionals It is used as the optical analog format on almost all 35mm film release prints and is always the accompanying optical analog format when Dolby Digital is present Dolby SR was originally implemented in Dolby s Cat 280 card which was pin compatible with the Cat 22 A type noise reduction card Thus devices that took the Cat 22 card could be upgraded from A to SR by replacing the Cat 22 with the Cat 280 The Cat 280 card functions in many devices including Dolby s Model 361 frame Some Dolby Cinema processors require a special version the Cat 280T which functions for decoding playback only References edit Dolby Ray 1987 03 01 The Spectral Recording Process Journal of the Audio Engineering Society 35 3 99 118 See also editDolby noise reduction system Dolby Surround Dolby Digital nbsp This film technology article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Dolby SR amp oldid 1160227908, wikipedia, wiki, book, books, library,
