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SPRAWL 2020

Basic Concept

A local audio/metadata network system (von Coler et al., 2020)2:

  • Any instrument can be connected to Access Points:
    • Raspberry PI + audio interface
  • HUB server for mixing and spatial rendering:
    • OSC for control
    • JackTrip for audio
  • Free & open source1
    • SuperCollider, PD, Faust
  • Any musician has access to system parameters.
The SPRAWL topology with server and access points.
The SPRAWL topology with server and access points.


Designing and Testing

Designed and built in a class with TU and CCRMA:
Building the system in class. First tests in the TU studio.
Building the system in class. First tests in the TU studio.

Typical setup with modular synth:
Access Point with modular synth. Default remote screen.
Access Point with modular. Default remote screen.


SPRAWL in Concert

Concert with the EOC, TU students and various guests:

  • 3D sound system on 3 levels
  • audience can move freely
Concert with SPRAWL at Silent Green (2020).
Concert with SPRAWL at Silent Green (2020).
View from the top. Students performing with SPRAWL.
View from the top. Students performing with SPRAWL.

  1. https://github.com/anwaldt/SPRAWL ↩

  2. Henrik von Coler, Nils Tonnätt, Vincent Kather, and Chris Chafe. Sprawl: a network system for enhanced interaction in musical ensembles. In Proceedings of the Linux Audio Conference. 2020. ↩