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Multichannel surround sound
1st May 2018

Multichannel surround sound

Multichannel audio is a technique of enriching the sound processing high-quality of any audio source with additional audio channels from audio speakers that surround the audience (surround channels), providing sound with a 360 radius in the horizontal plane (2D) not like "screen channels" (middle, [front] left, and [front] right) coming from only from the listener's frontward arc.

Multichannel surround sound is portrayed by a listener location or sweet spot where audio effects perform the best, and features a limited or frontward perspective of the sound field with the listener around this location. The technique improves the notion of sound spatialization by manipulating sound localization; a listener's ability to know the location or origin of a detected sound in direction and range. This typically is achieved by utilizing multiple discrete audio channels routed to an array of loudspeakers.

There are lots of multichannel audio based models and techniques, differing in processing and recording tactics along with the amount and the positioning of more stations.


BNW Acoustics VS-22 Grounds of use

Though cinema and soundtracks represent the major purposes of surround solutions, its scope of application is wider than that as surround sound enables creation of an audio-environment for all sorts of functions. Multichannel surround sound techniques could be used to recreate contents as various as music, conversation, synthetic or natural sounds for cinema, television, transmissions, or computers. With regard to music content one example is, a live performance is able to use multichannel techniques in the context connected with an open-air concert, of a musical theatre or even for transmissions; for a film particular techniques are tailored to movie theatre, or even to residence (e.g. home cinema systems).

The narrative space is also a content which can be improved through multichannel techniques. This applies mainly to cinema narratives, much like the conversation of the characters of a film, but will be also used on plays for theatre, to a conference, or to incorporate voice-based comments in an archeological site or monument. For instance, an exhibit could very well be improved with topical ambient sound of water, birds, train or machine sounds. Applicable natural sounds may also be used in educative applications.

BNW Acoustics HD 33 - Additional fields of application include video game systems, personal computers along with other platforms.

In these purposes, the content would typically be synthetic noise generated by the computer device in interaction with its user. Significant work has been specifically done using multichannel surround sound for enhanced situation awareness in armed service and general public safety applications.

BNW Acoustics SR-44 BNW Acoustics LR 60

Soft Key
Short for Software Key; another name for a function key, (a key which has a different function depending on the programming of a computer and as shown on a menu screen) especially when it is a button on a device that has an internal computer.

BNW Acoustics ZM-12 Weber
A unit that describes a number of magnetic lines of force and is used in the measurement or statement of magnetic flux density (the strength of magnetism).

Sound Patch
Full name of the term Patch

BNW Acoustics RS-9 Safe/Ready Selector
A two or more position switch, which is usually included on a tape machine and which, determines if each track will be able to go into record.

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