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15th Real Time Linux Workshop, October 28 to 31, 2013 at the Dipartimento Tecnologie Innovative, Scuola Universitaria Professionale della Svizzera Italiana in Lugano-Manno, Switzerland

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Active control of string instrument thanks to Xenomai

Simon Benacchio, UMR STMS IRCAM-CNRS-UPMC, Paris, France
Robert Piéchaud, UMR STMS IRCAM-CNRS-UPMC, Paris, France

Real time system is a necessary component of an active control implementation. For example, the sound control, which became a real issue in a lot of fields, needs deterministic and fast properties.

This research study presents an application using the Xenomai framework in order to control the vibration of a string instrument's soundboard. A control system is designed and applied to this structure with the aim of changing the instrument sound. The acquisition board used to measure and send the signals on the soundboard is linked to a modeling software thanks to this real time framework ensuring the necessary active control properties.