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2007-08-27 - Colloque/Article dans les actes avec comité de lecture - Anglais - 4 page(s)

D'alessandro Nicolas, Moinet Alexis , Dubuisson Thomas , Dutoit Thierry , "Causal/Anticausal Decomposition for Mixed-Phase Description of Brass and Bowed String Sounds" in ICMC 2007 "Immersed Music" - International Computer Music Conference -, volume 2, pp. 465-468, Copenhagen, Danemark, 2007

  • Codes CREF : Technologies de l'information et de la communication (TIC) (DI4730), Electricité courants faibles (DI2500)
  • Unités de recherche UMONS : Théorie des circuits et traitement du signal (F105)
  • Instituts UMONS : Institut NUMEDIART pour les Technologies des Arts Numériques (Numédiart)
Texte intégral :

Abstract(s) :

(Anglais) In this paper we present a new method for the decomposition of musical sounds into causal and anticausal contributions. The algorithm is based on a particular separation of zeros of the Z-Transform (ZZT) of signal frames, currently used in speech processing for glottal source parameters estimation. Acoustics of two particular continuous interaction instruments (CII) – trumpet and violin – is discussed and the use of a mixed-phase model for synthesis is proposed. First results are presented and relevance of extracted causal and anticausal contributions is evaluated.