Abstract:The previous study has reported that the presence of a small flap in the Brown Long-Eared Bat (Plecotus auritus) generate useful spatial information by the frequency-driven beam scanning. However, it did not investigate the beampattern generating mechanism of the flap. In this study, according to the dipole equivalence principle, the two resonance cavities split by the flap are simplified to a dipole source with certain vibration orientation. The analytical solution of the dipole shows obvious frequency-driven… Show more
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