Catégorie de document |
Contribution à un colloque ou à un congrès |
Titre |
A Fractional Delay Application |
Sous-titre |
Time-varying Propagation Speed in Waveguides |
Auteur principal |
Stéphan Tassart |
Co-auteurs |
Régis Msallam, Philippe Depalle, Samuel Dequidt |
Colloque / congrès |
ICMC: International Computer Music Conference. Thessaloniki Hellas : Septembre 1997 |
Comité de lecture |
Indéterminé |
Collation |
p.256-259 |
Copyright |
Ircam - Centre Georges-Pompidou |
Année |
1997 |
Statut éditorial |
Publié |
Résumé |
Much work has been done in the field of physical modelling in order
to digitally simulate the propagation of acoustical plane waves
in waveguides. In most of the work, the acoustical assumptions
taken into account result in the linear behaviour of the waveguides;
the acoustical wave speed can be considered as constant and
independant from the local acoustical pressure. But for some wind
instrument (e.g. the trombone), the acoustic pressure is so high
that the linear assumption is no longer valid. In this case the
model must include the nonlinear propagation. This paper presents
a new nonlinear filter for simulating the nonlinear propagation
in digital waveguides.
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Mots-clés |
waves propagation speed |
Equipe |
Analyse et synthèse sonores |
Cotes |
Tassart97a / 97-110-TAS-FRA-VIN-AS |
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