Dolby Digital AC-3

Dolby Digital AC-3 – Dolby’s format for transmitting and/or recording “5.1” digital multi-channel audio. The abbreviation “AC-3” – “sound coding” of the third generation. The designation “5.1” is explained as follows: “5” is two front, two rear and central channels. The designation “.1”, adopted for the channel of low-frequency effects (LFE), shows only that it uses a specially allocated frequency band. Unlike DPL, where a signal limited to 7 kilohertz is transmitted through the rear channel, in Dolby Digital the bands of all channels are the same and cover the full range of audio frequencies of 3-20000 Hz. Thus, AC-3 is essentially a full six-channel system.

« Back to Glossary Index

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.