A (CCD) scanner in the picks up a scanned video image of this area, and a processor correlates the image area and extracts the digital data as an AC-3. A constant bit rate of 320 kbit/s is used. Dolby Digital cinema soundtracks are optically recorded on a using sequential data blocks placed between every perforation hole on the sound track side of the film. (September 2011) () was the first film to use Dolby Digital technology when it premiered in theaters in the summer of 1992. Unsourced material may be challenged and.
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