MODELING COLLISION SOUNDS: NON-LINEAR CONTACT FORCE                

Federico Avanzini   						Davide Rocchesso
Dip. Elettronica ed Informatica                       Dip. Informatica
University of Padova                                  University of Verona
Via Gradenigo 6/A, 35131 - Padova, Italy              Strada Le Grazie, 37134 - Verona, Italy
<avanzini@dei.unipd.it>                               <rocchesso@sci.univr.it>


ABSTRACT 
A model for physically based synthesis of collision sounds
is proposed. Attention is focused on the non-linear contact
force, for which both analytical and experimental results are
presented. Numerical implementation of the model is discussed, 
with regard to accuracy and efciency issues. As an
application, a physically based audio effect is presented.



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