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Table 1.

Effects of call duration and bandwidth on distance of focus(DOF)

Duration (ms)
Bandwidth (kHz)
tPr2tPr2Overall regression equation
10.63 <0.001 30.8 -14.16 <0.001 44.1 DOF=0.689+0.191Dur-0.012BW; F2,253=600, P<0.001, r2=82.6 
Duration (ms)
Bandwidth (kHz)
tPr2tPr2Overall regression equation
10.63 <0.001 30.8 -14.16 <0.001 44.1 DOF=0.689+0.191Dur-0.012BW; F2,253=600, P<0.001, r2=82.6 

Results reported are from multiple regression analyses based on individual calls. Duration (Dur.; ms) was not related to bandwidth (BW; kHz)(F1,254=2.3; P=0.13), so the actual, rather than residual, bandwidth values were used in the multiple regression analysis.

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