Energy localization and frequency analysis in the locust ear
2014 ◽
Vol 11
(90)
◽
pp. 20130857
◽
Keyword(s):
Animal ears are exquisitely adapted to capture sound energy and perform signal analysis. Studying the ear of the locust, we show how frequency signal analysis can be performed solely by using the structural features of the tympanum. Incident sound waves generate mechanical vibrational waves that travel across the tympanum. These waves shoal in a tsunami-like fashion, resulting in energy localization that focuses vibrations onto the mechanosensory neurons in a frequency-dependent manner. Using finite element analysis, we demonstrate that two mechanical properties of the locust tympanum, distributed thickness and tension, are necessary and sufficient to generate frequency-dependent energy localization.
2011 ◽
Vol 243-249
◽
pp. 1461-1465
2019 ◽
Vol 105
(5-6)
◽
pp. 2543-2556
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2013 ◽
Vol 351-352
◽
pp. 782-785
2010 ◽
Vol 17
(4)
◽
pp. 389-404
◽
1997 ◽
Vol 232
(1-2)
◽
pp. 63-72
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2021 ◽
pp. 073168442199086