10. Acoustic Models of Sound Production
463
(A)
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1
0.8
0.6
0.4
0.2
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(B)
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Below
Above
(C)
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FIGURE 10.A2. (A) Spherical polar plot of the computed far-field emission pattern
of a 2-side square pressure sperture (unbaffled and unphased) of side-length 2.0 "lying in the x = 0 plane. The normalized far-field intensity is plotted for 7,200 directions (3° increments in both latitude and longitude). (B) Alternate-representation
of the same emission data: perspective view of a global mapping of the data with
height indicating intensity. (C) Contour plot of the same data projected down into
the plane of the global map.