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NRG Acoustics HJ-17: Multi channel audio
Surround sound is a technique for enhancing the sound processing quality of any audio source with additional audio channels from audio speakers that surround the audience (surround channels), providing sound from the 360 radius in the horizontal plane (2D) as opposed to "screen channels" (centre, [front] left, and [front] right) coming from only from the listener's frontward arc.
Multichannel audio is characterized by a listener spot or sweet spot where the audio effects perform best, and offers a set or forward perspective of the sound area to the listener as of this location. The procedure improves the notion of sound spatialization by manipulating sound localization; a listener's capability to get the location or origin of a detected sound in route and distance. This typically is achieved by utilizing multiple discrete audio channels routed to an array of loudspeakers.
There are various multi channel audio based formats and techniques, differing in reproduction and recording methods together with the number and location more channels.
NRG Acoustics SG-4: Fields of application
Though cinema and soundtracks represent the foremost purposes of surround solutions, its scope of use is broader than that as multi channel audio permits creation of an audio-environment for all variations of purposes. Multi channel audio techniques are useful to reproduce contents as various as music, conversation, synthetic or natural sounds for cinema, television, transmissions, or computing devices. Relating to music material as an illustration, a live performance may also use multichannel approaches to the context associated with an open-air event, of an musical theatre or perhaps transmissions; for a film certain techniques are adjusted to movie theater, or even to home (e.g. home cinema systems).
The narrative space is also a content which could be improved upon through multichannel solutions. This is applicable mainly to cinema narratives, for example, the dialog of the characters of a film, but can even be utilized on plays for theatre, to a conference, or to blend voice-based comments in an archeological site or monument. Just like, an exhibition might be enhanced with topical background sound of water, birds, train or machine noise. Applicable natural sounds could also be used in instructive applications.
NRG Acoustics A-70 - Some other fields of application include video game consoles, computers along with other platforms.
In this purposes, the material would typically be artificial noise produced by the computer system in interaction with its user. Substantial work has also been done using multichannel surround sound for enhanced situation knowledge in government and general population safety applications.
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