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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2020

Multiple two-step oscillation regimes produced by the alto saxophone

Tom Colinot
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Philippe Guillemain
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Christophe Vergez

Résumé

A saxophone mouthpiece fitted with sensors is used to observe the oscillation of a saxophone reed, as well as the internal acoustic pressure, allowing to identify qualitatively different oscillating regimes. In addition to the standard two-step regime, where the reed channel successively opens and closes once during an oscillation cycle, the experimental results show regimes featuring two closures of the reed channel per cycle, as well as inverted regimes, where the reed closure episode is longer than the open episode. These regimes are well-known on bowed string instruments and some were already described on the Uilleann pipes. A simple saxophone model using measured input impedance is studied with the harmonic balance method, and is shown to reproduce the same two-step regimes. The experiment shows qualitative agreement with the simulation: in both cases, the various regimes appear in the same order as the blowing pressure is increased. Similar results are obtained with other values of the reed opening control parameter, as well as another fingering.
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Dates et versions

hal-02549931 , version 1 (21-04-2020)

Identifiants

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Tom Colinot, Philippe Guillemain, Christophe Vergez, Jean-Baptiste Doc, Patrick Sanchez. Multiple two-step oscillation regimes produced by the alto saxophone. Journal of the Acoustical Society of America, 2020, 147 (4), pp.2406-2413. ⟨10.1121/10.0001109⟩. ⟨hal-02549931⟩
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