Control of doppler shift compensation in the greater horseshoe bat,Rhinolophus ferrumequinum

@article{Schnitzler2004ControlOD,
  title={Control of doppler shift compensation in the greater horseshoe bat,Rhinolophus ferrumequinum},
  author={H. Schnitzler},
  journal={Journal of comparative physiology},
  year={2004},
  volume={82},
  pages={79-92}
}
  • H. Schnitzler
  • Published 2004
  • Physics
  • Journal of comparative physiology
SummaryFlyingRhinolophus ferrumequinum lower the frequency of the constant frequency part (fA) of the emitted sounds in order to compensate for Doppler shifts caused by the flight speed. The echo frequency (fE) is kept constant within a frequency band of about 200 Hz, the center frequency of which is about 150 Hz above the average or resting frequency (fR) emitted by roosting bats shortly before take off. For the compensation they use a feedback control system in which the emission frequency is… Expand

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  • Biology
  • Journal of comparative physiology
  • 2004
TLDR
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The results suggested that when H. armiger was approaching the target, it showed positive Doppler shift compensation: call frequency and the velocity (v) were positive correlated and these characteristics may be the coactions consequence of the bio-structural restriction and natural selection. Expand
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Rhinolophus ferrumequinum compensates for Doppler shifts and keeps the frequency of the CF-portion of echoes constant at a reference frequency and the cochlea acts as a narrowly-tuned mechanical filter which is responsible for sharp tuning of the CM, N1-on and N 1-off threshold curves. Expand
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