NRG Acoustics SG-4: Grounds of application

NRG Acoustics HJ-17: Multichannel surround sound

Multi channel audio is a technique of enhancing the sound processing high-quality of an 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) compared with "screen channels" (middle, [front] left, and [front] right) coming from only from the listener's frontward arc.

Multichannel audio is characterized by a listener location or sweet spot where audio effects work most effectively, and provides a set or forward perspective of the sound field towards the listener as of this location. The procedure enhances the perception of sound spatialization by manipulating sound localization; a listener's capability to get the location or origin of a noticed sound in route and range. This typically is achieved with the help of multiple discrete audio channels routed to an array of loudspeakers.

There are lots of multichannel sorround sound systems based types and methods, ranging in reproduction and saving options combined with the amount and location of additional channels.


NRG Acoustics SG-4: Grounds of application

Though cinema and soundtracks represent the main uses of surround techniques, its scope of use is expansive than that as surround sound permits creation of an audio-environment for all variations of functions. Multichannel surround sound techniques may be used to reproduce contents as varied as music, conversation, synthetic or natural sounds for cinema, television, transmissions, or pcs. Concerning music content as an example, an active performance may use multichannel techniques in the context of an open-air concert, of a musical theatre or perhaps for broadcasting; for a film particular techniques are tailored to movie theatre, or to home (e.g. home cinema systems).

The narrative area is also a content that could be enhanced through multichannel techniques. This is applicable mainly to cinema narratives, for example the dialog of the characters of a film, but might also be used on plays for theatre, to a seminar, or to integrate voice-based comments in an archeological site or monument. By way of example, an exhibition could possibly be enhanced with topical background sound of water, birds, train or machine sound. Topical natural sounds can also be used in educative applications.

NRG Acoustics A-70 - Additional fields of application contain video gaming systems, personal computers and other platforms.

In this purposes, the material would typically be synthetic noise maded by the computer system in interaction with its user. Significant work has been specifically done using multichannel for enhanced situation knowledge in army and general public safety purposes.