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Fig. 7. Attenuation of pure-tone sound pulses (7-40 kHz) over distance, as measured in a typical biotope of the five Neoconocephalus species. The curve fittings (solid lines) were calculated using the formula y=a*x+b*log(x)+c. The dotted line indicates the theoretical attenuation due to spherical spreading alone (6 dB per double distance).





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