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Dolby Digital

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Also known as DD, Dolby Audio

Audio compression technologies

Key facts

Filename extension
.ac3
Internet media type
audio/ac3
Uniform type identifier uti
public.ac3-audio

via Wikipedia infobox

Official website

Dolby Digital 5.1 - Dolby Professional

Dolby Digital 5.1 (AC3) is the standard for home theater, broadcast, and cinema surround sound. Elevate your audio with a high-quality, multichannel experience.

professional.dolby.com

Link to the official site · 13,785 chars · not written by Vinony

Wikidata facts

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Dolby Digital track reader.jpg
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Commons category
Dolby Digital
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via Wikidata · CC0

~19 min read

Article

Logo from 2012–2021; introduced in 2007.

Dolby Digital, originally synonymous with Dolby AC-3 (see below), is the name for a family of audio compression technologies developed by Dolby Laboratories. Called Dolby Stereo Digital until 1995, it uses lossy compression (except for Dolby TrueHD). The first use of Dolby Digital was to provide digital sound in cinemas from 35 mm film prints. It has since also been used for TV broadcast, radio broadcast via satellite, digital video streaming, DVDs, Blu-ray discs and game consoles.

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