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SDDS | Article about SDDS by The Free Dictionary
https://encyclopedia2.thefreedictionary.com/SDDS
SDDS (Sony Dynamic Digital Sound) A digital audio encoding system used in movie theaters since 1993. The SDDS sound track is recorded optically as microscopic pits similar to a CD along both outer edges of the 35mm film strip. An SDDS reader is mounted on the projector, and red LEDs read the pits and convert them into digital data.
How Movie Sound Works | HowStuffWorks
https://entertainment.howstuffworks.com/movie-sound.htm
Sony Dynamic Digital Sound (SDDS) uses the outside edge of the film to stripe digital audio information. Unlike any of the other formats, analog or digital, SDDS provides error correction through the use of an identical redundant stripe on the other edge of the film. SDDS supports increased surround-sound options by offering eight channels of sound:
Sony Dynamic Digital Sound | Logopedia | Fandom
https://logos.fandom.com/wiki/Sony_Dynamic_Digital_Sound
Sony Dynamic Digital Sound View source History Talk (0) Contents. 1 Sony Dynamic Digital Sound. 1.1 1993 (prototype) 1.2 1993–2017, 2020 (easter egg) 2 Sony Dynamic Digital Sound 8 Channels. 2.1 1993–2007; Sony Dynamic Digital Sound …
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