We study both, by experimental and numerical means the fluid dynamical
phenomenon of edge tones. Of particular interest is the verification
of scaling laws relating the frequency f to given quantities, namely
d, the height of the jet, w, the stand�off distance and the velocity
of the jet. We conclude that the Strouhal number Sd is related to
the geometrical quantities through Sd = C � (d / w)n with n � 1,
in contrast to some analytical treatments of the problem. The constant
C of the experiment agrees within 13�15\% with the result of the
numerical treatment. Only a weak dependence on the Reynolds number
with respect to d is observed. In general, a very good agreement
of the experimental and the numerical simulations is found.
