Dolby Digital, the reigning standard in surround-sound technology, produces 5.1-channel surround sound in thousands of cinemas and millions of homes.

Experience high-definition (HD) surround sound that's as stunning as your TV's HD picture.

Discover how up to 7.1 channels of theater-quality sound can enrich your audio experience.

Dolby Pro Logic II transforms your TV, game, or stereo content into rich, full-range surround sound.