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Cinema Digital Sound

From Chace Audio

Cinema Digital Sound (CDS) was a 5.1 theatrical release format developed in the early 1990's by Eastman Kodak and ORC (Optical Radiation Corporation). CDS was short-lived in the marketplace, giving way to Dolby® Digital, DTS®, and SDDS®.

One key factor that may have played a part in its short life was the fact that CDS occupied the same physical space on a print that the analog SVA track used. This meant that a CDS track could not have an analog backup on the print. All current digital theatrical formats rely on the analog track as a default backup in the case of digital errors and mutes in the digital playback. Moreover, the analog track takes on even greater importance if the print should end up in a theater that doesn't support digital playback.