Zirkonium
Zirkonium is a free macOS spatial composition and rendering software suite developed at ZKM for controlling loudspeaker domes and scalable 2D or 3D playback systems. Its current MK3 generation combines trajectory design, real-time rendering, and usability-focused tools for composing and performing spatial works, with additional utilities such as SpeakerSetup and remote-control options, and its DSP server is built with the open-source Pure Data environment. The project has evolved from earlier MK1 and MK2 systems and is used both in the ZKM Sound Dome and external multichannel environments. The predecessor MK2 introduced a modular client-server architecture with a Max/MSP-based DSP server, supporting up to 50 simultaneous sound sources via Vector-Base Amplitude Panning and a graphical trajectory editor inspired by HoloEdit. The ZKM Sound Dome itself, housed inside the ZKM Kubus in Karlsruhe, arranges 47 loudspeakers in a dome configuration, and the same underlying technology has since been licensed for installations elsewhere, including the Konica Minolta Planetarium "Sky" in Tokyo Skytree Town.
tech specs
history
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Development of the software controlling ZKM's Sound Dome began in 2004 at the Institute for Music and Acoustics, part of ZKM | Center for Art and Media Karlsruhe, following the Klangdom concept first presented publicly in 2006 by Chandrasekhar Ramakrishnan, Joachim Goßmann and Ludger Brümmer. Zirkonium MK1 was released that same year, one of the first GUI-driven, free spatialisation tools of its kind, using a straightforward event-based breakpoint editor to control fixed-speed spherical rotations across any configurable loudspeaker layout. Zirkonium MK2, introduced with a 2014 paper by David Wagner, Ludger Brümmer, Götz Dipper and Jochen Arne Otto, rebuilt the system around a modular client-server architecture with a Max/MSP-driven DSP server and a considerably more gestural trajectory editor. Zirkonium MK3 followed in 2015, moving the DSP server to Pure Data and substantially redesigning both the software structure and interface to improve usability, visualisation and compatibility, including new parametric trajectory design tools. The project, now maintained by ZKM's Hertz Lab, continues to be developed by figures including Ludger Brümmer, Dan Wilcox and Pierre Ritt.
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