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Title:Artificial ears for a biomimetic sonarhead: from multiple reflectors to surfaces
Authors: DaeEun Kim ; John Hallam ; Nico Kaempchen ; Jose Carmena
Date:Apr 2001
Publication Title:Artificial Life
Publisher:MIT Press
Publication Type:Journal Article
Volume No:7(2) Page Nos:147-169
This work presents an evolutionary approach to pinna design. Narrowband echolocating bats move the pinna to alter the directional sensitivity of their perceptual systems. Adding pinnae to RoBat --- a biomimetic sonarhead mounted on a mobile robot --- is the goal of this work. After a description of the earlier work on artificial pinnae consisting of multiple reflectors around the transducer, an acoustic model, inspired by a physical model of sound diffraction and reflections in the human concha, is described and revisited as the model to use for evolving complex shapes. A genetic algorithm evolved the shape of the pinnae with respect to desired features of the directivity pattern of the receiver transducers. Some interesting paraboloid shapes for specific echolocating behaviours were evolved, improving performance with respect to the bare transducer's performance.
2002 by The MIT Press.
The authors and the University of Edinburgh retain the right to reproduce and publish this paper for educational purposes.
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Bibtex format
author = { DaeEun Kim and John Hallam and Nico Kaempchen and Jose Carmena },
title = {Artificial ears for a biomimetic sonarhead: from multiple reflectors to surfaces},
journal = {Artificial Life},
publisher = {MIT Press},
year = 2001,
month = {Apr},
volume = {7(2)},
pages = {147-169},

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