Analysis, Synthesis, and Classification of Nonlinear Systems Using Synchronized Swept-Sine Method for Audio Effects
Résumé
A new method of identification, based on an input synchronized exponential swept sine signal, is used to analyze and synthesize nonlinear audio systems like overdrive pedals for guitar. Two different pedals are studied : the first one exhibiting a strong influence of the input signal level on its input/output law, the second one exhibiting a weak influence of this input signal level. The Synchronized Swept Sine method leads to a Generalized Polynomial Hammerstein model equivalent to the pedals under test. The behaviors of both pedals are illustrated through model-based re-synthesized signals. Moreover, it is also shown that this method leads to a criterion allowing the classification of the nonlinear systems under test, according to the influence of the input signal levels on their input/output law. The archived file is not the final published version of the article A. Novak, L. Simon & P. Lotton (2010), "Analysis, synthesis, and classification of nonlinear systems using synchronized swept-sine method for audio effects", EURASIP
Domaines
Sciences de l'ingénieur [physics]
Origine : Fichiers produits par l'(les) auteur(s)
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