Sylvain Maugeais
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View article: Cartography of a trombone sound regimes using a python implementation of a Support Vector Machine-based Explicit Design Space Decomposition
Cartography of a trombone sound regimes using a python implementation of a Support Vector Machine-based Explicit Design Space Decomposition Open
Self-sustained musical instruments are non-linear dynamical systems that can produce a large number of sound regimes, whose existence and stability depend on both design and a number of control parameters. Determining which regimes exist f…
View article: Bifurcation analysis of a minimal model of a bowed string instrument
Bifurcation analysis of a minimal model of a bowed string instrument Open
International audience
View article: One pedal note can hide another
One pedal note can hide another Open
The so-called pedal note, frequently used in many orchestral scores for instance on trombone parts, is the first regime (lowest frequency) played by bass brass instruments.Because their frequency is far from any acoustic resonance frequenc…
View article: Weakly nonlinear propagation in tubes: from brass instruments to noise propagation
Weakly nonlinear propagation in tubes: from brass instruments to noise propagation Open
International audience
View article: The bichromator as the quintessence of a saxophone and the question of harmonicity
The bichromator as the quintessence of a saxophone and the question of harmonicity Open
Reed wind instruments are divided into two families: those with a cylindrical bore (clarinet) and those with a conical bore (saxophone, oboe, bassoon).Apart from the timbre, the main features of the behavior of a clarinet can be obtained w…
View article: What makes the duduk special
What makes the duduk special Open
The duduk is a double reed instrument with cylindrical bore originating from Armenia. It is characterized by a deep and melancholic sound that has become one of the characteristics of Armenian music. Although its physical characteristics b…
View article: On Galois Action on the Inertia Stack of Moduli Spaces of Curves
On Galois Action on the Inertia Stack of Moduli Spaces of Curves Open
We establish that the geometric action of the absolute Galois group \mathrm{Gal}(\bar{\mathbb{Q}}/\mathbb{Q}) on the étale fundamental group of moduli spaces of curves induces a Galois action on its stack inertia subgroups, and that this a…
View article: Brass player’s mask parameters obtained by inverse method
Brass player’s mask parameters obtained by inverse method Open
An optimization method is proposed to find mask parameters of a brass player coming from a one degree of freedom lip model, with only constant mouth pressure and periodic mouthpiece pressure as input data, and a cost function relying on th…
View article: Diversity of ghost notes in tubas, euphoniums and saxhorns
Diversity of ghost notes in tubas, euphoniums and saxhorns Open
The ghost note is a natural note which can be played exclusively on bass brass instruments with a predominantly-expanding bore profile such as tubas, euphoniums or saxhorns. It stands between the pedal note-the lowest natural note playable…
View article: Diversity of ghost notes in tubas, euphoniums and saxhorns
Diversity of ghost notes in tubas, euphoniums and saxhorns Open
The ghost note is a natural note which can be played exclusively on bass brass instruments with a predominantly-expanding bore profile such as tubas, euphoniums or saxhorns. It stands between the pedal note – the lowest natural note playab…
View article: Minimal blowing pressure allowing periodic oscillations in a model of bass brass instruments
Minimal blowing pressure allowing periodic oscillations in a model of bass brass instruments Open
In this study, an acoustic resonator -- a bass brass instrument -- with multiple resonances coupled to an exciter -- the player's lips -- with one resonance is modelled by a multidimensional dynamical system, and studied using a continuati…
View article: Minimal blowing pressure allowing periodic oscillations in a model of bass brass instruments
Minimal blowing pressure allowing periodic oscillations in a model of bass brass instruments Open
In this study, an acoustic resonator – a bass brass instrument – with multiple resonances coupled to an exciter – the player’s lips – with one resonance is modelled by a multidimensional dynamical system, and studied using a continuation a…
View article: Minimal blowing pressure allowing periodic oscillations in a simplified reed musical instrument model: Bouasse-Benade prescription assessed through numerical continuation
Minimal blowing pressure allowing periodic oscillations in a simplified reed musical instrument model: Bouasse-Benade prescription assessed through numerical continuation Open
A reed instrument model with N acoustical modes can be described as a 2N dimensional autonomous nonlinear dynamical system. Here, a simplified model of a reed-like instrument having two quasi-harmonic resonances, represented by a four dime…
View article: From the bifurcation diagrams to the ease of playing of reed musical instruments. A theoretical illustration of the Bouasse-Benade prescription?
From the bifurcation diagrams to the ease of playing of reed musical instruments. A theoretical illustration of the Bouasse-Benade prescription? Open
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View article: From the bifurcation diagrams to the ease of playing of reed musical instruments. Application to a reed-like instrument having two quasi-harmonic resonances
From the bifurcation diagrams to the ease of playing of reed musical instruments. Application to a reed-like instrument having two quasi-harmonic resonances Open
International audience
View article: Piano Strings with Reduced Inharmonicity
Piano Strings with Reduced Inharmonicity Open
On modern straight pianos, the inharmonicity of the lower strings is rather large especially for the first octave. Consequently, the timber of these strings can sometimes sound awful and chords on the first octave be highly dissonant. The …
View article: Hurwitz Stacks of Groups Extensions and Irreducibility
Hurwitz Stacks of Groups Extensions and Irreducibility Open
We study the irreducible components of special loci of curves whose group of symmetries is given as certain group extension. We introduce some relative Hurwitz data, which we show by using mixed étale cohomology theory, identifies some irr…