3D audio

(redirected from 3-D sound)

3D audio

(1) An umbrella term for surround sound systems that add a height channel. Also called "virtual surround sound" and "Immersive Sound," sound cards may use signal processing to simulate a 3D audio experience in headphones. See OpenAL and Auro-3D.

(2) (3D Audio) An MPEG-H standard for surround sound recording and playback. 3D Audio supports a mix of channel-based audio, object-based audio and Higher Order Ambisonics (HOA) with up to 64 speaker channels. See surround sound and MPEG-H.
References in periodicals archive ?
It is also worth noting that Muller's invention uses the wave field synthesis technique that builds 3-D sound fields to either cancel or reinforce sound waves with constructive or destructive interference, to place sound at pinpoint locations.
Among the challenges to creating 3-D sound fields is that each person's spatial sound cues are influenced by individual factors, such as the shape and position of the person's ears, Algazi said.
For fighter pilots, 3-D sound can be used to pinpoint locations of friendly and hostile airplanes.
Air Force researchers are continuing work on 3-D sound at the Biocommunications Lab, Wright-Patterson Air Force Base, OH.
"With 3-D sound, the signal coming into your headphones appears to be outside your head [somewhere] in space.
The primary reason for developing 3-D sound is to help fighter pilots.
But 3-D sound has a number of uses outside of the military.
For the visually handicapped, a 3-D sound system could give them a higher degree of freedom through a new and more realistic navigation system.
By knowing your current position on a map, you can use 3-D sound to follow a signal, such as a quiet beep, to reach the next desired point," McKinley says.