Website for the 2020 Linux Audio Conference held in Bordeaux, France
25-27 Nov 2020 Talence (France)
SPRAWL: A NETWORK SYSTEM FOR ENHANCED INTERACTION IN MUSICAL ENSEMBLES
Henrik Von Coler  1@  , Nils Tonnätt  2, *@  , Vincent Kather  3  , Chris Chafe  4@  
1 : Elektronisches Studio, TU Berlin (Audio Communication Group)
2 : Elektronisches Studio, TU Berlin (Audio Communication Group)
3 : TU Berlin (Audio Communication Group)
4 : Center for Computer Research in Music and Acoustics (CCRMA), Stanford University
* : Corresponding author

The SPRAWL system is an audio and information routing network,
enabling enhanced ways of interaction for musical ensembles. A
Linux audio server with a SuperCollider mixing and spatialization
system is connected to several access points via ethernet, using Jack-
Trip for audio transmission. The unified access points are based on
a Raspberry Pi 4 with a 7 inch touch screen and a USB audio in-
terface, running SuperCollider, Puredata and additional tools. Using
custom applications on these units, musicians are able to control the
routing and spatialization of the system, allowing personal monitor-
ing, the distribution of click tracks and related auditory information,
as well as visual information and cues. The system is designed as
a meta-instrument for developing individual configurations and soft-
ware components for specific compositions and use cases. It has
been successfully used in on-site concerts and ported to wide area
networks for remote rehearsals and performances.


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