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Controllable biomimetic birdsong
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Mukherjee, Aryesh, Mandre, Shreyas and Mahadevan, L. (2017) Controllable biomimetic birdsong. Journal of The Royal Society Interface, 14 (133). 20170002. doi:10.1098/rsif.2017.0002 ISSN 1742-5689.
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Official URL: http://dx.doi.org/10.1098/rsif.2017.0002
Abstract
Birdsong is the product of the controlled generation of sound embodied in a neuromotor system. From a biophysical perspective, a natural question is that of the difficulty of producing birdsong. To address this, we built a biomimetic syrinx consisting of a stretched simple rubber tube through which air is blown, subject to localized mechanical squeezing with a linear actuator. A large static tension on the tube and small dynamic variations in the localized squeezing allow us to control transitions between three states: a quiescent state, a periodic state and a solitary wave state. The static load brings the system close to threshold for spontaneous oscillations, while small dynamic loads allow for rapid transitions between the states. We use this to mimic a variety of birdsongs via the slow–fast modulated nonlinear dynamics of the physical substrate, the syrinx, regulated by a simple controller. Finally, a minimal mathematical model of the system inspired by our observations allows us to address the problem of song mimicry in an excitable oscillator for tonal songs.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QA Mathematics | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | ||||||||
Journal or Publication Title: | Journal of The Royal Society Interface | ||||||||
Publisher: | The Royal Society Publishing | ||||||||
ISSN: | 1742-5689 | ||||||||
Official Date: | 31 August 2017 | ||||||||
Dates: |
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Volume: | 14 | ||||||||
Number: | 133 | ||||||||
Article Number: | 20170002 | ||||||||
DOI: | 10.1098/rsif.2017.0002 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 25 October 2019 |
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