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Instruments de la famille des flûtes : analyse des transitions entre régimes

Abstract : Various studies have highlighted the diversity of regimes in flute-like instruments: static, periodic or non periodic regimes. However, some aspects of their dynamics remain poorly understood. Both for flute players and makers, transitions between regimes are particularly important: on the one hand, they correspond to a change of the note played, and on the other hand, production of a given regime is determined by parameters related to making and to playing of the instrument. In this document, we are interested in caracteristics of regime change in flute-like instruments, in relation with making and playing issues. Different approches are considered. First, experimental methods, with measurement on both musician and an artificial mouth. On the other hand, a physical model of the instrument - a system of delay differential equations of neutral type - is studied, through time-domain integration, and using orthogonal collocation coupled to numerical continuation. This last approach provides access to bifurcation diagrams. Considering results of these different methods, it becomes possible to better understand different experimental phenomena, such as regime change and associated hysteresis, or production mechanisms of non periodic regimes. Influence of different parameters is further studied : the crucial importance of the channel geometry in recorders is highlighted, and the influence of the mouth pressure dynamics on regime change thresholds is analysed.
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Submitted on : Wednesday, April 15, 2015 - 9:31:36 AM
Last modification on : Tuesday, October 19, 2021 - 10:59:09 PM
Long-term archiving on: : Tuesday, April 18, 2017 - 7:45:43 PM

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  • HAL Id : tel-01142359, version 1

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Soizic Terrien. Instruments de la famille des flûtes : analyse des transitions entre régimes. Acoustique [physics.class-ph]. Aix-Marseille Université, 2014. Français. ⟨tel-01142359⟩

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