A physically-based impact model - already known and exploited in the field of sound synthesis - is studied using both analytical tools and numerical simulations. It is shown that, for some regions of the parameter space, the trajectories of discretized systems may drift from analytically-derived curves. Some methods, based on enforcing numerical energy consistency, are suggested to improve the accuracy and stability of discrete-time systems.
Energy and accuracy issues in numerical simulations of a non-linear impact model / S. Papetti, F. Avanzini, D. Rocchesso - In: Proceedings of the 12th International Conference on Digital Audio Effects[s.l] : DAFx, 2009. - pp. 339-346 (( Intervento presentato al 12. convegno International Conference on Digital Audio Effects tenutosi a Como nel 2009.
Energy and accuracy issues in numerical simulations of a non-linear impact model
F. Avanzini;D. Rocchesso
2009
Abstract
A physically-based impact model - already known and exploited in the field of sound synthesis - is studied using both analytical tools and numerical simulations. It is shown that, for some regions of the parameter space, the trajectories of discretized systems may drift from analytically-derived curves. Some methods, based on enforcing numerical energy consistency, are suggested to improve the accuracy and stability of discrete-time systems.
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