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Combinig the harmonic balance method (HBM) and a continuation method is a well-known technique to follow the periodic solutions of dynamical systems when a control parameter is varied. However, since deriving the algebraic system containing the Fourier coefficients can be a highly cumbersome procedure, the classical HBM is often limited to polynomial… (More)

- Xavier Rodet, Christophe Vergez
- Computer Music Journal
- 1999

- Xavier Rodet, Christophe Vergez
- ICMC
- 1996

- Fabrice Silva, Jean Kergomard, Christophe Vergez, Jöel Gilbert
- The Journal of the Acoustical Society of America
- 2008

Sound emergence in clarinetlike instruments is investigated in terms of instability of the static regime. Various models of reed-bore coupling are considered, from the pioneering work of Wilson and Beavers ["Operating modes of the clarinet," J. Acoust. Soc. Am. 56, 653-658 (1974)] to more recent modeling including viscothermal bore losses and vena contracta… (More)

- Sami Karkar, Christophe Vergez, Bruno Cochelin
- The Journal of the Acoustical Society of America
- 2012

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… (More)

- Andre Almeida, Christophe Vergez, René Caussé
- The Journal of the Acoustical Society of America
- 2007

This article proposes a characterization of the double reed in quasistatic regimes. The nonlinear relation between the pressure drop, deltap, in the double reed and the volume flow crossing it, q, is measured for slow variations of these variables. The volume flow is determined from the pressure drop in a diaphragm replacing the instrument's bore.… (More)

- Daniel Noreland, Sergio Bellizzi, Christophe Vergez, Robert Bouc
- 2009

The concept of nonlinear modes is applied in order to analyze the behavior of a model of woodwind reed instruments. Using a modal expansion of the impedance of the instrument, and by projecting the equation for the acoustic pressure on the normal modes of the air column, a system of second order ordinary differential equations is obtained. The equations are… (More)

For several years, we have been developing and studying computer-simulated models of brass instruments including the player's lips. We demonstrate here such a physical model. It is played in real-time with MIDI events. We present recent developments concerning both physical functioning and real-time controls. They result in great improvements of sound… (More)

- Thomas Hélie, Christophe Vergez, Jean Lévine, Xavier Rodet
- ICMC
- 1999

In this paper, we deal with the inversion of a physical model of a trumpet, i.e. how should the player control the model in order to obtain a given sound ? After having shown that the inversion is a ill-posed problem, we add a physically based constraint which leads to a physically pertinent solution .

- Stefania Serafin, Christophe Vergez, Xavier Rodet
- ICMC
- 1999