A family of digital audio encoding technologies from Dolby used in movie theaters, home theaters and video games. Introduced in the movie "Batman Returns" in 1992, Dolby Digital has been the most ...

A digital audio encoding system from Dolby that ... channels (5.1), and Pro Logic IIx added support for 6.1 and 7.1 channels. See Dolby Digital. THIS DEFINITION IS FOR PERSONAL USE ONLY.