NRG Acoustics HJ-17: Multi channel audio

NRG Acoustics HJ-17: Multi channel audio

Surround sound is a technique for enhancing the sound reproduction superior quality of an audio source with additional audio channels from audio speakers that surround the audience (surround channels), providing sound from a 360 radius in the horizontal plane (2D) as opposed to "screen channels" (middle, [front] left, and [front] right) coming from only from the listener's frontward arc.

Multichannel audio is portrayed by a listener location or sweet spot where the audio effects perform best, and provides a set or frontward perspective of the sound area to the listener at this location. The technique enhances the conception of sound spatialization by using sound localization; a listener's capability to know the location or origin of a noticed sound in direction and range. Typically this is achieved by means of multiple discrete audio channels routed to an array of loudspeakers.

There are lots of multi channel audio based models and methods, differing in reproduction and saving methods together with the number and placing of additional stations.


NRG Acoustics A-70: Domains of use

Though cinema and soundtracks characterize the primary purposes of surround techniques, its scope of application is much wider than that as multi channel audio permits creation of an audio-environment for all variations of purposes. Multichannel surround sound techniques is known to reproduce contents as varied as music, conversation, synthetic or natural sounds for cinema, television, transmissions, or computer systems. Concerning music content for example, an active performance could use multichannel approaches to the context of an open-air concert, of an musical theatre or even for broadcasting; for a film certain techniques are adjusted to movie theater, or to home (e.g. home cinema systems).

The narrative area is also a content which may be improved through multichannel approaches. This is applicable mainly to cinema narratives, as an example the talk of the characters of a film, but may also be used on plays for theatre, to a seminar, or to integrate voice-based comments in an archeological site or monument. Here is an example, an exhibition may perhaps be enhanced with topical ambient sound of water, wild birds, train or equipment noises. Applicable natural sounds can also be used in educational programs.

NRG Acoustics SG-4 - Several other fields of application incorporate video gaming consoles, computers and other platforms.

In such applications, the content would typically be fabricated noise maded by the computer system in interaction with its user. Significant work has been specifically done using multichannel surround sound for enhanced situation awareness in military and public safety applications.