For Ac-3 we have terms and definitions in 7 topics. The topics are DVD, DVD Authoring, DVD and CD, Electronic Cinematography, HDTV, Home Theater and Multimedia.

Ac-3 (DVD)

The former name of the Dolby Digital audio-coding system, which is still technically referred to as AC-3 in standards documents. AC-3 is the successor to Dolby's AC-1 and AC-2 audio coding techniques.

Ac-3 (DVD Authoring)

See Dolby Digital.

Ac-3 (DVD and CD)

The former name of the Dolby Digital audio-coding system, which is still technically referred to as AC-3 in standards documents. AC-3 is the successor to Dolby’s AC-1 and AC-2 audio coding techniques.

Ac-3 (Electronic Cinematography)

AC-3 is Dolby's trademark for digital sound system with either 2 or 5.1 channels. AC-3 multi-channel sound provides five completely discrete channels: Left, Center, Right, Left Rear, Right Rear & subwoofer. The nominal digital bit rate is 384 kilobits per second.

Ac-3 (HDTV)

The 5.1-channel sound system specified in the Standard for Digital-HDTV. Also known as "Dolby Digital," AC-3 delivers CD-quality digital audio and provides five full-bandwidth channels for front left, front right, center, surround left and surround right speakers, plus an LFE (low frequency effect) subwoofer, for a total of 5.1 channels.

Ac-3 (Home Theater)

Another name for Dolby Digital, the 5.1 channel discrete digital surround-sound format.

Ac-3 (Multimedia)

An early name for Dolby Digital.

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