Archives of Acoustics, 42, 3, pp. 395–399, 2017

Numerical Study of the Effect of Furrows on Biosonar Beamforming in Aselliscus Stoliczkanus Bat

Weikai HE
Shandong University; University of Jinan

Jianxiong FENG
University of Jinan; Virginia Tech

University of Jinan

Zhiwei ZHANG
Taishan Medical University

Hongwang LU
Shandong University

The Aselliscus Stoliczkanus bat, studied here, has intricately shaped structures surrounding the nostrils. These structures are hypothesised to have influence on animals’ acoustic radiation patterns. Using micro-tomography scanning technique, a 3D digital model of the noseleaf is reconstructed and biosonar beam pattern is analysed using a finite element method based on the 3D noseleaf model. The present research focuses on the conspicuous furrows in noseleaf, and our analysis allows to conclude the followings: a) structural details in noseleaf of Aselliscus Stoliczkanus bat can produce acoustic effects even if it is not adjacent to the nostrils, b) the furrows possess frequency-selective characteristics, c) the furrows have the function to manipulate the direction and width of the outgoing ultrasound wave.
Keywords: Aselliscus Stoliczkanus bat; furrows; frequency-selective characteristics; finite element method; beam pattern
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).


Bogdanowicz W., Csada R.D., Fenton M.B.J. (1997), Structure of Noseleaf, Echolocation, and Foraging Behavior in the Phyllostomidae (Chiroptera), Journal of Mammalogy, 78, 3, 942–953.

Fletcher N. H. (1992), Acoustic systems in biology, Oxford University Press, New York.

Gao L., Balakrishnan S., He W., Yan Z., Mueller R. (2011), Ear deformations give bats a physical mechanism for fast adaptation of ultrasonic beampatterns, Physical Review Letters, 107, 214301.

Goodman J.W. (2005), Introduction to Fourier optics, 3rd ed, Roberts and Company Publishers, Greenwood Village, Colorado.

He W., Petterson S.C., Gupta A.K., Simmons J.A., Mueller R. (2015), Lancet dynamics in greater horseshoe bats, Rhinolophus ferrumequinum, PLOS ONE, 10, 4, e0121700.

Koopman K.F. (1994), Chiroptera: Systematics, Berlin: de Gruyter.

Li G., Liang B., Wang Y.N., Zhao H.B., Helgen K., Lin L.K., Jones G., Zhang S.Y. (2007), Echolocation calls, diet and phylogenetic relationship of Stoliczka’s trident dat Aselliscus stoliczkanus (Hipposideridae), Journal of Mammalogy, 88, 736–744.

Müller R. (2004), A numerical study of the role of the tragus in the big brown bat, Journal of the Acoustical Society of America, 116, 3701–3712.

Müller R. (2010), Numerical Analysis of Biosonar Beamforming Mechanisms and Strategies in Bats, Journal of the Acoustical Society of America, 128, 1414–1425.

Neuweiler G., Covey E. (2000), Biology of Bats, Oxford University Press.

Nowak R. M. (1991), Walker's Mammals of the World, pp. 169–170, Johns Hopkins University Press,. Baltimore, Md.

Rao R.K., Ben-Arie J. (1996), Optimal Head Related Transfer Functions for Hearing and Monaural Localization in Elevation: a Signal Processing Design Perspective, IEEE Transactions on Biomedical Engineering, 43, 1093–105.

Reijniers J., Vanderelst D., Peremans H. (2010), Morphology-induced information transfer in bat sonar, Physical Review Letters, 105, 148701.

Rossing T.D, Fletcher N.H. (2004), Principles of vibration and sound, 2nd Ed, Springer-Verlag, New York.

Schnitzler H.U., Henson Jr. O.W. (1980), Animal sonar systems, pp. 109–181, Springer.

Schnitzler H.U, Grinnell A.D. (1977), Directional sensitivity of echolocation in the Horseshoe Bat, Rhinolophus ferrumequinum. I. Directionality of sound emission, Journal of Comparative Physiology A, 116, 51–61.

Suga N. (1990), Biosonar and neural computation in bats, Scientific American, 262, 60–68.

Vanderelst D., Mey F.D., Peremans H., Geipel I., Kalko E., Firzlaff U. (2010), What noseleaves do or FM bats depends on their degree of sensorial specialization, Plos ONE, 5, e11893.

Vanderelst D., Reijniers J., Peremans H. (2012), The furrows of rhinolophidae revisited., Journal of the Royal Society Interface, 9, 1100–1103.

Wang F., Zhuang Q., Zhang Z. (2010), Frequency Driven Scanning Characteristic of a Pinna Model Inspired from the Brown Big-eared Bat (Plecotus auritus), ACTA Acoustica, 35, 1, 26–30.

Zhuang Q., Müller R. (2006), Noseleaf Furrows in a Horseshoe Bat Act as Resonance Cavities Shaping the Biosonar Beam, Physical Review Letters, 97, 21, 218701-1–218701-4.

Zhuang Q., Müller R. (2007), Numerical study of the effect of the noseleaf on biosonar beamforming in a horseshoe bat, Physical Review E, 76, 05, 051902-1–051902-11.

Zhang Z., Nguyen S. T., Müller R. (2009), Acoustic effects accurately predict an extreme case of biological morphology, Physical Review Letters, 103, 038701.

DOI: 10.1515/aoa-2017-0041