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Datasat

From From Wikipedia, Chace Audio

Datasat Digital Entertainment owns the cinematic brand formerly known as DTS®, a multi-channel digital surround sound format originally developed by Digital Theater Systems, Inc. for theatrical presentation.

Work on the format started in 1991, with film director Steven Spielberg as one of the company's initial investors, who felt that optical theatrical sound formats had become obsolete. The first release was Spielberg's 1993 Jurassic Park. DTS's major competitors in multi-channel theatrical audio were Dolby Digital and SDDS®.

In 2008, DTS's cinema division was divested to form DTS Digital Cinema. In 2009, DTS Digital Cinema was purchased by Beaufort International Group Plc. and became known as Datasat Digital Entertainment. In 2011, the DTS cinema branding was dropped in favor of Datasat. The original DTS, Inc. continues to develop and license DTS products for the home consumer market.

How does Datasat work? Information in the form of a modified time code is optically imaged onto the film (see illustration for location). An optical LED reader reads the time code off the film and sends it to a Datasat processor that uses it to synchronize the projected image with the soundtrack audio, which has been recorded in compressed form on standard DCD-ROM optical disc media at a bit rate of 1103 kbps.

By comparison, Datasat's main competitor, Dolby Digital, places its audio between the sprocket holes on the film print, leaving the content susceptible to physical damage due to film wear and mishandling. Since Datasat's audio resides on an optical disc, the possibility of damage through wear is eliminated except in cases where the film’s time code track has been completely destroyed. In a way, this technology hearkens back to the Vitaphone process, the most successful of the original sound-on-disc formats.

This article is licensed under the GNU Free Documentation License found at http://www.gnu.org/copyleft/fdl.html. It uses material from the Wikipedia article at http://en.wikipedia.org/wiki/DTS_(sound_system).

Macro of 35mm film audio tracks, from left to right: Sony SDDS, Dolby® Digital, analog Optical, and Datasat time code. Image courtesy of Wikipedia Commons.

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The Datasat time code track (labeled as DTS) is highlighted in red in this illustration.

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