3D audio

(redirected from 3-D positional sound)

3D audio

(1) A variety of techniques that simulate surround sound from a single pair of stereo speakers (left and right channels). Also called "virtual surround sound" and employed in sound cards to enhance gaming, 3D audio uses signal processing techniques that simulate sounds coming from all directions. See OpenAL, Dolby Digital and Auro-3D.

(2) (3D Audio) An MPEG-H standard for surround sound audio delivery. 3D Audio supports object-based audio and up to 128 virtual and 64 physical channels. It also supports higher-order ambiosonics (HOA) for sounds above and below the listener. 3D Audio handles traditional speaker layouts such as 5.1 and 7.1, as well as 22.2, which includes 10 middle, 9 upper and 3 lower channels plus two subwoofers. See object-based audio, surround sound and MPEG-H.
References in periodicals archive ?
3-D PC audio (including 3-D positional sound effects) is one of today's most exciting advancements for games and multimedia, promising to take the consumer PC audio experience from a passive to a more realistic, interactive one.
Meanwhile, various online gaming sites have been giving "Delta Force" rave reviews that exalt its unique multiplayer aspects, the 3-D positional sound and unrivaled expansive outdoor environments.
0 opens a new dimension in gaming by enabling multiplayer online games, 3-D positional sound, and support for new types of input devices and peripherals.
3-D positional sound in Delta Force increases a player's situational awareness, adding to the game's realism.
The 3-D positional sound forces the player to rely on listening for cues while conducting a mission.
The device supports Microsoft's DirectSound (2D and 3D) and Aureal's HRTF (Head Related Transfer Function) 3-D positional sound standards as well as the AC'97 audio system specification.
The OTI-611 incorporates support for the following latest PC audio standards: wavetable synthesis and multichannel digital audio mixing; 3-D positional sound and support for multiple audio and communications codecs.