NRG Acoustics A-70: Multi channel audio

NRG Acoustics A-70: Multi channel audio

Multi channel audio is a method of enriching the sound processing top quality of an audio source with additional audio channels from audio speakers that surround the listener (surround channels), providing sound with a 360 radius within the horizontal plane (2D) in contrast to "screen channels" (centre, [front] left, and [front] right) coming from only on the listener's forward arc.

Multichannel audio is characterized by a listener location or sweet spot in which the audio effects perform best, and offers a set or frontward perspective of the sound field with the listener around this location. The technique improves the belief of sound spatialization by taking advantage of sound localization; a listener's capability to know the location or origin of a detected sound in path and range. Typically this is achieved by using multiple discrete audio channels routed to an array of loudspeakers.

There are lots of multichannel based models and methods, differing in processing and saving approaches in addition to the number and the positioning of of additional channels.


NRG Acoustics HJ-17: Areas of use

Though cinema and soundtracks signify the foremost uses of surround approaches, its scope of use is larger than that as multi channel audio enables creation of an audio-environment for all variations of functions. Multichannel techniques could be used to recreate contents as various as music, conversation, synthetic or natural sounds for cinema, television, transmissions, or pc's. Relating to music content one example is, a live performance may use multichannel techniques in the context of an open-air event, of an musical theatre or for transmissions; for a film particular techniques are adjusted to movie theatre, or even to home (e.g. home cinema systems).

The narrative area is also a content that could be improved through multichannel approaches. This applies mainly to cinema narratives, for example the talk from the characters of a film, but may even be applied to plays for theatre, to a meeting, or to incorporate voice-based comments in an archeological site or monument. As an illustration, an exhibit could very well be enhanced with topical background sound of water, birds, train or equipment sound. Applicable natural sounds can also be used in educative programs.

NRG Acoustics SG-4 - Other sorts of fields of application include gaming controllers, computers along with other platforms.

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