Table 2.

Measured intensity, regression of intensity against distance from target, and estimated energy flux density for the five subjects

BatNIntensity at 1 m (dB peSPL)Sloper2PEnergy at 1 m (J m-2)Gabor energy at 1 m (J m-2)
34 87.70 –16.75 0.73 <0.001 6.12±6.92×10-8 3.7±2.27×10-8
36 88.50 –23.93 0.61 <0.001 3.72±2.14×10-8 1.53±0.783×10-8
42 95.91 –31.28 0.83 <0.001 3.79±2.29×10-8 5.35±4.30×10-8
38 91.48 –26.1 0.94 <0.001 2.49±2.55×10-8 1.40±0.898×10-8
50 86.98 –23.06 0.52 <0.001 3.48±2.20×10-8 5.30±4.37×10-8
BatNIntensity at 1 m (dB peSPL)Sloper2PEnergy at 1 m (J m-2)Gabor energy at 1 m (J m-2)
34 87.70 –16.75 0.73 <0.001 6.12±6.92×10-8 3.7±2.27×10-8
36 88.50 –23.93 0.61 <0.001 3.72±2.14×10-8 1.53±0.783×10-8
42 95.91 –31.28 0.83 <0.001 3.79±2.29×10-8 5.35±4.30×10-8
38 91.48 –26.1 0.94 <0.001 2.49±2.55×10-8 1.40±0.898×10-8
50 86.98 –23.06 0.52 <0.001 3.48±2.20×10-8 5.30±4.37×10-8

Values are means ± s.d. For energy flux density values, N=10 per bat.

Intensity at 1 m is taken from the regression equation for that bat.

Energy flux density derived from the integral of the waveform is estimated from Equation 5 and Gabor energy flux density is estimated from Equation 16.

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