Oscillation threshold of a clarinet model: a numerical continuation approach - Archive ouverte HAL Access content directly
Journal Articles Journal of the Acoustical Society of America Year : 2012

Oscillation threshold of a clarinet model: a numerical continuation approach

Christophe Vergez
Bruno Cochelin


This paper focuses on the oscillation threshold of single reed instruments. Several characteristics such as blowing pressure at threshold, regime selection, and playing frequency are known to change radically when taking into account the reed dynamics and the flow induced by the reed motion. Previous works have shown interesting tendencies, using analytical expressions with simplified models. In the present study, a more elaborated physical model is considered. The influence of several parameters, depending on the reed properties, the design of the instrument or the control operated by the player, are studied. Previous results on the influence of the reed resonance frequency are confirmed. New results concerning the simultaneous influence of two model parameters on oscillation threshold, regime selection and playing frequency are presented and discussed. The authors use a numerical continuation approach. Numerical continuation consists in following a given solution of a set of equations when a parameter varies. Considering the instrument as a dynamical system, the oscillation threshold problem is formulated as a path following of Hopf bifurcations, generalizing the usual approach of the characteristic equation, as used in previous works. The proposed numerical approach proves to be useful for the study of musical instruments. It is complementary to analytical analysis and direct time-domain or frequency-domain simulations since it allows to derive information that is hardly reachable through simulation, without the approximations needed for analytical approach.
Fichier principal
Vignette du fichier
oscillation-threshold_hal.pdf (731.4 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-00667987 , version 1 (12-02-2012)



Sami Karkar, Christophe Vergez, Bruno Cochelin. Oscillation threshold of a clarinet model: a numerical continuation approach. Journal of the Acoustical Society of America, 2012, 131 (1), pp.698-707. ⟨10.1121/1.3651231⟩. ⟨hal-00667987⟩
149 View
527 Download



Gmail Facebook Twitter LinkedIn More