A3D

hardware (Aureal 3-Dimensional?) A technology developed by

Aureal that delivers sound with a three-dimensional effect

through two speakers. Many modern sound cards and PC games

now support this feature.

A3D differs from the various forms of surround sound in that

it only requires two speakers, while surround sound typically

requires four or five. It is sometimes less convincing than

surround sound but is supposedly better in interactive

environments. For example, PC games in which sounds often

move from one speaker to another favour A3D, while

pre-recorded video favours surround sound.

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(1999-01-26)