
1) American invention 2) Big name in audio compression 3) Consumer electronic 4) High-definition television
Found on
https://www.crosswordclues.com/clue/dolby-digital

Dolby Digital is the name for audio compression technologies developed by Dolby Laboratories. It was originally named Dolby Stereo Digital until 1994. Except for Dolby TrueHD, the audio compression is lossy. The first use of Dolby Digital was to provide digital sound in cinemas from 35mm film prints. It is now also used for other applications such...
Found on
http://en.wikipedia.org/wiki/Dolby_Digital

A five-channel audio system with all processing in the digital domain consisting of left, center, right and left rear, and right rear channels and optional subwoofer. This is also referred to as Dolby Digital 5.1. Unlike Dolby Prologic in which the rear effects channel`s frequency is limited to approx. 100-7000Hz, Dolby Digital rear channels ar...
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http://www.encyclo.co.uk/local/20532

An encoding system that digitally compresses up to 5.1 discrete channels of audio (left front, center, right front, left surround, right surround, and LFE) into a single bitstream, which can be recorded onto a DVD, HDTV broadcast, or other form of digital media. When RF-modulated, it was included on some laser discs, which requires an RF-demodulato...
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http://www.encyclo.co.uk/local/21058

This is a 5.1 channel digital film format that if optically recorded on to a film release print in the blocks of space located between the film's sprocket holes. (Sound)
Found on
http://www.filmland.com/glossary/Dictionary.html#A

A five-channel audio system with all processing in the digital domain consisting of left, center, right and left rear, and right rear channels and optional subwoofer. This is also referred to as Dolby Digital 5.1. Unlike Dolby Prologic in which the rear effects channel`s frequency is limited to approx. 100-7000Hz, Dolby Digital rear channels are sp...
Found on
http://www.traditionalmusic.co.uk/music%20tech%20glossary/Music%20Tech%20Gl

Dolby's name for its format for the digital soundtrack system for motion picture playback. Utilizes
Found on
https://www.encyclo.co.uk/local/22369

Six-channel digital audio standard that is part of the U.S. digital television standard
Found on
https://www.encyclo.co.uk/local/22375
No exact match found.