  Since they correspond to a jump from a given note to another one, the mouth
pressure thresholds leading to regime changes are particularly important
quantities in flute-like instruments. In this paper, a comparison of such
thresholds between an artificial mouth, an experienced flutist and a non player
is provided. It highlights the ability of the experienced player to
considerabily shift regime change thresholds, and thus to enlarge its control
in terms of nuances and spectrum. Based on recent works on other wind
instruments and on the theory of dynamic bifurcations, the hypothe- sis is
tested experimentally and numerically that the dynamics of the blowing pressure
influences regime change thresholds. The results highlight the strong influence
of this parameter on thresholds, suggesting its wide use by experienced
musicians. Starting from these observations and from an analysis of a physical
model of flute-like instruments, involving numerical continuation methods and
Floquet stability analysis, a phenomenological modelling of regime change is
proposed and validated. It allows to predict the regime change thresholds in
the dynamic case, in which time variations of the blowing pressure are taken
into account.
