Presented during the exhibition Entres Autres, December 7-8, 2007 in the Hubert-Aquin building at UQAM, Occupation Sonore was an attempt to transform transitional architecture into public sound sculpture. After a period of testing to locate resonant frequencies and experiment with speaker arrangements and performance techniques, two presentations were given during which visitors were encouraged to explore the space and assist the artists. Sine waves were diffused on five speakers tuned within a narrow range around the resonant frequency of an overhead heating tube. The resulting rhythms were amplified by contact microphones placed on the heating tube and simultaneously experienced by visitors as binaural beating which shifted as they moved across the bridge.
Speakers and diffusion equipment was graciously provided by CIAM. Sound generation, microphone mixing, and multi-channel diffusion software was written in PureData.
Process blog is at http://think-tank-action.blogspot.com
Materials:
portable computer running Pure Data
external sound card with a minimum of five channels
five speakers with good response around 30-40hz
two piezoelectric contact microphones
Patrick Valiquet
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