Acousmatic room orchestration system

from Wikipedia, the free encyclopedia

The Acousmatic Room Orchestration System (AROS) describes an acousmatic multi-channel sound system for the reproduction of sound signals via several loudspeakers distributed in the room. It is a so-called space-generating system, based on an extension of the Acousmonium (by François Bayle ), which enables a real gradation of depth .

philosophy

Each of the loudspeakers distributed in the room has its own timbre and radiation characteristics , similar to how every instrument in an orchestra has its own timbre, radiation characteristics and position in the room. That is why it is often referred to as a “loudspeaker orchestra”. With this approach, the highest possible depth graduation is achieved for the room in question.

In contrast to other multi-channel formats such as 5.1 or Ambisonics , which simulate three-dimensionality , the AROS creates a real three-dimensionality in which one can move and thus has a constantly new perspective on the sound.

construction

If possible, the loudspeakers are distributed throughout the room (ceiling, walls, floor and on objects in the room). The number of loudspeakers is not defined and is determined individually for the room to be designed. However, there are certain standards such as the AROS II, which consists of 13 speakers and channels. All possible types of loudspeakers can be used, both conventional electrodynamic loudspeakers and structure-borne sound drivers or individual dome loudspeakers .

Structure of AROS II

function

While with the Acousmonium a stereo source is usually dynamically distributed to several loudspeakers according to the score, with the AROS each sound or voice of a piece of music is either assigned directly to a loudspeaker or distributed to the loudspeakers using various panning methods (such as VBAP or Ambisonics ) .

application areas

The main area of ​​application is the design of room sound moods for exhibitions, museums and expos. Further areas of application are architecture, art in architecture, theater and other scenographic projects. The AROS was first developed in 2008 for the BMW Museum in Munich by the Swiss company Idee und Klang GmbH.

Structure of AROS II (3D)

literature