![]() A constant bit rate of 320 kbit/s is used. Dolby Digital cinema soundtracks are optically recorded on a 35 mm release print using sequential data blocks placed between every perforation hole on the sound track side of the film. 5 Dolby technologies in packaged media formatsīatman Returns was the first film to use Dolby Digital technology when it premiered in theaters in Summer 1992. ![]()
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