IKO/OSIL Symposium & Summer School Sept. 10th - 14th 2018 Graz


to our IKO summer school and symposium scheduled for Sept. 10th to 14th 2018.

It finalizes our compact spherical loudspeaker array research from the past 4 years:

Orchestrating Space by Icosahedral Loudspeaker (OSIL).

In the 2-day symposium there'll be the opportunity to learn where our artistic, psycho-acoustic, and audio-technical journey took us to.

Within the 3-day summer school preceding the symposium, it is possible to work and experiment with the 3 IEM Icosahedral Loudspeakers (IKO).The idea for the schedule is mentioned below.

There will be enough time for discussion and exchange of concepts and ideas in between.

We will work at Ligeti Hall and an orchestra rehearsal room at MUMUTH, so all is set for a fruitful gathering. -

And we will have IKO1, IKO2, IKO3, and our new loudspeaker cubes to play with.


To sign up for the symposium, please notify Gerriet K. Sharma or Franz Zotter.

We are looking forward to welcoming you in Graz!

Kind regards,









Sept. 10th to 14th



##Summer School
Mo 10th : Introduction into technology and artistic techniques to orchestrate space by IKO
Working slots with IKO 1-3.
Evening discussion about the IKO’s sculptural sound phenomena and their conception, production, and reproducibility.
Tue 11th: Historic spherical loudspeakers and introduction into existing works with the IKO.
Working slots with IKO 1-3.

Mi 12th : The virtual Icosahedral Loudspeaker (vIKO)
Working slots with IKO 1-3


Thursday, Sept. 13th
09:30 - 09:40 Orchestra Rehearsal RoomOpening
09:40 - 10:30 Orchestra Rehearsal RoomIntroduction
Overview early works with and for IKO and OSIL results
(Franz Zotter, Gerriet K. Sharma, Matthias Frank)
10:40 - 12:00 Orchestra Rehearsal RoomTechnical research contributions (15+5min)
IKO by IEM and Sonible
Open measurement data and IKO control
(Franz Zotter)
Low-latency MIMO cross-talk cancellation filters for the IKO using parallel filters
(Balázs Bank)
Virtualization of IKO - vIKO
(Markus Zaunschirm)
12:00 - 13:20 Lunch Break
13:20 - 14:20 Orchestra Rehearsal RoomPsychoacoustic research contributions (15+5min)
Sound positioning by directivity
(Matthias Frank)
Influence of different direct sound characteristics on the effect of sound projection
(Tom Wühle, TU Dresden)
Advanced positioning aspects and precedence
(Florian Wendt)
14:40 - 16:00 Orchestra Rehearsal Room Artistic-aesthetical research aspects (15+5min)
Spatial Practices: Sculpturality and Shared Perceptual Space (SPS)
(Gerriet K. Sharma)
Topology of spatial texture in the acousmatic medium
(Erik Nyström)
The Scherchen Kugel
(Gregorio Karman)
Sound based Spatial Perception
(Elena Ungeheuer)
16:00 - 18:00 various rooms Interactive Demos in 3 rooms
sound sculptures
listening experiments
19:00 - 21:00 Ligeti Hall IKO Concert

Friday, Sept. 14th
10:00 - 12:30 Outlook
Summer School Results
Instrumentality of Loudspeaker Arrays
(Frank Schultz)
IKO with other Instruments
(Susanne Fröhlich, Gerriet K. Sharma)
Surround with depth on loudspeaker cubes
(Thomas Deppisch)
Surround audio formats on IKO and cubes
(Nils Meyer-Kahlen)
Final IKO piece

The OSIL project was funded by the PEEK/AR program of Austrian Science Fund (FWF, AR 328-G21).