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. Author manuscript; available in PMC: 2012 Jun 27.
Published in final edited form as: J Acoust Soc Am. 2003 Aug;114(2):1120–1131. doi: 10.1121/1.1589754

FIG. 8.

FIG. 8

Beam patterns of several vocalizations from a bat intercepting a tethered meal worm. The meal worm is denoted by +, the bat is denoted by a circle with a line extending to show the velocity vector of flight, which is assumed to be approximately aligned to the body. The times indicate milliseconds before contact. The circles at the borders of the panels denote the positions of the microphones. Note how a scanning motion (A,B,C,D) narrows down (E,F,G) and then changes to a “lock-on” motion (H,I) as the bat searches for then selects the target. Also note the split that appears in vocalization patterns A and B. This is discussed in the text. Microphone positions are not shown, but the orientation of the plot is identical to that in Fig. 5.