[Characteristics of the acoustic field of interfering reflections and the echolocation hearing of the dolphin].
A model of the acoustic field of interfering reflections from steel cylinders was developed. Analysis of the model showed the availability of great potential resources for a decrease of the influence of unwanted echoes and hence for increasing the signal-to-clatter ratio. The conformity of the available models of the echolocation hearing of the dolphin to the acoustic field of the clatter was considered. The participation of mandidle mental foramens in conducting the echo to the cochlea was considered. In this case the hearing aperture is determined by the dimensions of mental foramens, while the hearing base is determined by the distance between the mental foramens of the left and right mandible halves. There are good reasons to believe that the optimal dimensions of the aperture and the base of echolocation hearing of Odontoceti essentially increase the effectiveness of defense of their sonar from reverberation.
Riabov
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D000818:Animals; D001844:Bone Conduction; D004192:Discrimination, Psychological; D004289:Dolphins / Q000502:physiology*; D004455:Echolocation / Q000502:physiology*; D006309:Hearing / Q000502:physiology*; D007568:Jaw / Q000033:anatomy & histology; D008954:Models, Biological; D013017:Sound Localization / Q000502:physiology*