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%0 Journal Article
%A Benacchio, Simon
%A Chomette, Baptiste
%A Mamou-Mani, Adrien
%A Finel, Victor
%T Mode tuning of a simplified string instrument using time-dimensionless state-derivative control
%D 2015
%B Journal of Sound and Vibration
%V 334
%P 178-189
%F Benacchio15a
%X In recent years, there has been a growing interest in smart structures, particularly in the field of musical acoustics. Control methods, initially developed to reduce vibration and damage, can be a good way to shift modal parameters of a structure in order to modify its dynamic response. This study focuses on smart musical instruments and aims to modify their radiated sound. This is achieved by controlling the modal parameters of the soundboard of a simplified string instrument. A method combining a pole placement algorithm and a time-dimensionless state-derivative control is used and quickly compared to a usual state control method. Then the effect of the mode tuning on the coupling between the string and the soundboard is experimentally studied. Controlling two vibration modes of the soundboard, its acoustic response and the damping of the third partial of the sound are modified. Finally these effects are listened in the radiated sound.
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