Skip to main content
. 2013 Apr 25;4:89. doi: 10.3389/fphys.2013.00089

Figure 7.

Figure 7

Search volume for P. pygmaeus and C. perspicillata navigating an indoor flight room. The shape illustrates the volume in space where a smooth large surface that absorbs 20 dB of the incoming sound is detectable. Calculations are based on measured parameters (P. pygmaeus: 111 dB SPL, 55 kHz, DI = 12 dB, C. perspicillata: 99 dB SPL, 90 kHz, DI = 17). For both bats, the hearing threshold is assumed to be noise limited to 20 dB SPL. The calculations do not account for directional properties on the receiving side.