Scatter 2019

Scatter 2019 is a solar-powered installation, sonic composition, and artistic research project by John Ferguson, Erik Griswold, Paul Bardini, and Daniel Della-Bosca. Sound emanates from twelve loudspeakers that hang from six motorised rotors, which are each mounted at a height of four metres on a freestanding structure. By walking and listening beneath and between each mechanism, visitors experience a unique sonic adventure. The project was commissioned by Tourism and Events Queensland through Brisbane Powerhouse for the inaugural Curiocity Brisbane Festival. In March 2019 Scatter was installed in the South Bank Parklands for a period of three weeks. Over 1000 visitors a day interacted with the installation and during World Science Festival Brisbane approximately 3000 visitors per day were counted. Scatter 2019 appeared courtesy of Queensland Conservatorium Research Centre and Queensland College of Art at Griffith University.

Scatter 2019 is a playful embracement of rotational dynamics that also highlights the Doppler effect and celebrates the directionality of sound waves by exploring sound-in-motion. Each rotor is controlled by an embedded computer and microcontroller, the system is programmed to have periods of acceleration, deceleration, and pause. Computer-controlled lighting makes the installation effective at night and visually articulates the physics of sound while querying the relationship between sonic and visual modalities.

How does it work?

The sound-world is created digitally through a combination of audio samples and synthesis using graphical programming environment Pure data. This  runs live (via libpd) on Bela Platform, with motor speed, direction of rotation, and LED lighting all being controlled from Bela Platform (a Teensy microcontroller is used in order to access the Neopixel library and control the LEDs via MIDI). Various predefined compositional segments are activated by individually seeded random number generators so the length and ordering of each section is unpredictable, meaning the emergent composition is never the same twice. A slip ring is utilised to feed power and signal through the motor axle to the moving rotor. The whole system runs from a deep cycle battery that is charged by two solar panels, which allowed Scatter to run afterdark; in Brisbane during March sunset is before 6pm and the installation needed to run from 8am till 10pm everyday, two solar panels provided sufficient energy to run the system and charge the batteries to full capacity before nightfall (this proved successful even when we experienced several wet and rainy days in a row). 

What's inside the box? (Extract from 'start-up' manual)



Scatter was originally prototyped in 2018 through ‘Hidden Sounds’, a series of 7 sound installations curated by Clocked Out with funding from the Australia Council for the Arts, with the lead artists Ferguson, Griswold, and Sulja Nezovic. The project was substantially redeveloped and upscaled with support from Curiocity in 2019.  For an overview of the 2018 iteration see here

Documentation of Scatter 2019 process

New experiments towards future work

In 2019 Scatter was also installed at Harrigans Lane in New South Wales for Easter at the Piano Mill. This later allowed extensive testing of different sounds towards a new iteration of the project. The documentation below was  recorded in stereo, so the movement of sound in space is also better captured than previously.