musique contemporaine

Ircam - articles scientifiques notice originale

Simulation of the weakly nonlinear propagation in a straight pipe: application to a real-time brassy audio effect

Type

text
 

Genre(s)

article
 

Forme(s)

document numérique
 

Accès sur site

  • Version numérique intégrale de l'article
 

Cette ressource est disponible chez l'organisme suivant : Ircam - Centre Pompidou

Identification

Titre

Simulation of the weakly nonlinear propagation in a straight pipe: application to a real-time brassy audio effect
 

Nom(s)

Helie, Thomas (auteur)
 
Smet, Vanessa (auteur)
 

Publication

Ajaccio, Corsica, France, , 2008
 

Description

Sujet(s)

Volterra series   Nonlinear acoustics   Signal processing   Real-time audio systems
 

Résumé

Nonlinear propagation in acoustic pipes is responsible for the brightness of the brass sounds at fortissimo nuances. Using the formalism of Volterra series, an acoustic model of this phenomenon is solved as an input-output system. An identification of the Volterra kernels leads to a structure composed of linear filters, sums, and instantaneous products of signals. A digital simulation which guarantees no aliasing is derived, from which real-time versions have been implemented.
 

Note(s)

Contribution au colloque ou congrès : Mediterranean Conference on Control and Automation
 

Localisation

Envoyer la notice

Bookmark and Share 
 

Identifiant OAI

 

Date de la notice

2010-02-25 01:00:00
 

Identifiant portail

 

Contact