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Figure 1


Fig. 1. Three examples of the effect of call design on ranging errors. (A–C) Spectrograms (FFT size 512, 256 points Hanning window, 240 points overlap). Two calls (A,C) were emitted at the locations indicated in Fig. 7B by stars. DOF indicates the distance at which overall ranging errors were zero. (D–F) Ranging errors calculated for these calls and indicated as lines of identical error. Labels on lines indicate size of ranging error in centimetres (>0 represents overestimation and <0 represents underestimation of distance). The thick line labelled `focus' indicates locations where the overall ranging error is zero. (G–I) Ranging errors as in D–F but for a smaller distance range. `Pinheads' indicate perceived positions and `pin tips' the actual positions of targets.





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