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Source-Filter Model for Quasi-Harmonic Instruments

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text
 

Genre(s)

article
 

Forme(s)

document numérique
 

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

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Titre

Source-Filter Model for Quasi-Harmonic Instruments
 

Nom(s)

Hahn, Henrik (auteur)
 
Roebel, Axel (auteur)
 
Burred, Juan José (auteur)
 
Weinzierl, Stefan (auteur)
 

Publication

Graz, Austria , 2010
 

Description

Sujet(s)

Source Filter Model   Music Instrument
 

Résumé

In this paper we propose a new method for a generalized model representing the time-varying spectral characteristics of quasi - harmonic instruments. This approach comprises a linear source- filter model, a parameter estimation method and a model evalua- tion based on the prototype's variance. The source-filter-model is composed of an excitation source generating sinusoidal parameter trajectories and a modeling resonance filter, whereas basic-splines (B-Splines) are used to model continuous trajectories. To estimate the model parameters we apply a gradient decent method to a train- ing database and the prototype's variance is being estimated on a test database. Such a model could later be used as a priori knowl- edge for polyphonic instrument recognition, polyphonic transcrip- tion and source separation algorithms as well as for resynthesis.
 

Note(s)

Contribution au colloque ou congrès : Digital Audio Effects (DAFx)
 

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Date de la notice

2010-12-17 01:00:00
 

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