Flute acoustics: measurement, modelling and design - School of ...

APPENDIX A. IMPEDANCE SPECTRA 153
F♯7 — XXOXXXXOXXOXXXOO
10 8
10 7
|Z| (Pa s m −3 )
10 6
10 5
model
experiment
10 4
0 1 2 3 4
f (kHz)
A.2 MCGEE CLASSICAL FLUTE
The following graphs show the magnitude of the measured input impedance spectra for a classical
flute (made by Terry McGee, Canberra) for all recommended fingerings. The tuning slide
was set at 12.8 mm and the cork at 19.0 mm. The impedance spectra were measured using an
impedance head of diameter 7.8 mm. The inertance of a stub of air of length 5 mm and diameter
7.8 mm was added to the measurements and simulations in order to approximate the effect
of a player’s face impedance and to facilitate comparison with earlier measurements (Wolfe
et al. 2001a). The measurements were made at T = 21.6 ± 0.5 °C and relative humidity 37 ± 1 %.