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4 After the Lips: Acoustic Resonances and Radiation
Fig. 4.78 Maps of the real component of the pressure in the sound field radiated by a sinusoidally
excited trombone. (a) 500 Hz (theory); (b) 500 Hz (experiment); (c) 1000 Hz (theory); (d) 1000 Hz
(experiment); (e) 2000 Hz (theory); (f) 2000 Hz (experiment). (g) 4000 Hz (theory); (h) 4000 Hz
(experiment). Horizontal axes: axial distance x (m) from bell exit plane. Vertical axes: radial
distance y (m) from bell axis. From Kemp et al. (2017)