Surround - meaning and definition. What is Surround
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What (who) is Surround - definition

SYSTEM WITH LOUDSPEAKERS THAT SURROUND THE LISTENER
Surround Sound; Surround; 3D sound; 3D Sound; High definition surround; High Definition Surround Sound; Surround music; Surround audio; Surround sound music; 6.1; Spatial audio; 3/2.1; 9.1; Sound spatialization
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surround         
v. a.
1.
Encircle, environ, encompass, enclose.
2.
(Mil.) Invest, hem in, fence about.
surround         
(surrounds, surrounding, surrounded)
Frequency: The word is one of the 1500 most common words in English.
1.
If a person or thing is surrounded by something, that thing is situated all around them.
The small churchyard was surrounded by a rusted wrought-iron fence...
The shell surrounding the egg has many important functions.
...the snipers and artillerymen in the surrounding hills.
VERB: be V-ed, V n, V-ing
2.
If you are surrounded by soldiers or police, they spread out so that they are in positions all the way around you.
When the car stopped in the town square it was surrounded by soldiers and militiamen...
He tried to run away but gave up when he found himself surrounded...
= encircle
VERB: be V-ed, V-ed
3.
The circumstances, feelings, or ideas which surround something are those that are closely associated with it.
The decision had been agreed in principle before today's meeting, but some controversy surrounded it...
VERB: V n
4.
If you surround yourself with certain people or things, you make sure that you have a lot of them near you all the time.
He had made it his business to surround himself with a hand-picked group of bright young officers...
They love being surrounded by familiar possessions.
VERB: V n with/by n, V n with/by n
Surround         
·vt To inclose on all sides; to Encompass; to Environ.
II. Surround ·vt To lie or be on all sides of; to Encircle; as, a wall surrounds the city.
III. Surround ·vt To pass around; to travel about; to Circumnavigate; as, to surround the world.
IV. Surround ·noun A method of hunting some animals, as the buffalo, by surrounding a herd, and driving them over a precipice, into a ravine, ·etc.
V. Surround ·vt To inclose, as a body of troops, between hostile forces, so as to cut off means of communication or retreat; to invest, as a city.

Wikipedia

Surround sound

Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener (surround channels). Its first application was in movie theaters. Prior to surround sound, theater sound systems commonly had three screen channels of sound that played from three loudspeakers (left, center, and right) located in front of the audience. Surround sound adds one or more channels from loudspeakers to the side or behind the listener that are able to create the sensation of sound coming from any horizontal direction (at ground level) around the listener.

The technique enhances the perception of sound spatialization by exploiting sound localization: a listener's ability to identify the location or origin of a detected sound in direction and distance. This is achieved by using multiple discrete audio channels routed to an array of loudspeakers. Surround sound typically has a listener location (sweet spot) where the audio effects work best and presents a fixed or forward perspective of the sound field to the listener at this location.

Surround sound formats vary in reproduction and recording methods, along with the number and positioning of additional channels. The most common surround sound specification, the ITU's 5.1 standard, calls for 6 speakers: Center (C), in front of the listener; Left (L) and Right (R), at angles of 60°; Left Surround (LS) and Right Surround (RS) at angles of 100–120°; and a subwoofer, whose position is not critical.

Examples of use of Surround
1. Complementing its unique design, Ambilight Full Surround boasts a complete surround–sight effect with light emitting from the left, right, top and bottom of the screen.
2. One "finger," for instance, would head north from Beit Arye to surround Ariel, while another would head east from the main fence to surround Kedumim and Immanuel.
3. People wanting to talk to him always surround him.
4. Several luxury hotels and serviced apartment blocks surround the complex.
5. Paintings of people from around the globe surround him.