Johannes M. Zmoelnig
Institute for Electronic Music and Acoustics
Traditional multichannel-reproduction systems are mainly used for
recreation of pantophonic soundfields.
Fully periphonic reproduction has been limited by computational power to
manipulate large numbers of audio-channels as well as
Since in the last years digital hardware has become fast enough to
meet the computational requirements,
a medium-sized concert-hall for reproduction of periphonic electro-acoustic
music, the so called IEM-Cube, has been installed at the the IEM.
The room is equipped with a hemisphere consisting of 24 loudspeakers,
that allows reproduction of three-dimensional soundfields
following ambisonic principles of at least 3rd order.
To make use of this, a linear 3D-mixing system on PC-basis
has been developed.
The system may be used as
a production-tool for periphonic mixing into a set of ambisonic-channels,
as a reproduction-environment for recreating a 3D-soundfield out of
such set of ambisonic-encoded channels,
and as a live-instrument that allows free positioning and movement of a number of
virtual sources in real-time.
Johannes M Zmoelnig