Figure 10

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Directivity of the source at 636 Hz in the case of a rigid object of width lobj = 15 cm located at distances zobj equal to 1 cm, 5 cm, 10 cm and 15 cm. (a) sketch of the microphone positions on a semicircle in the ZX plan; (b) directivity plots obtained from the direct computation with the rigid masking object; (c) directivity plots obtained from the velocity fields identified by iPTF with the rigid masking object.
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