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Time-variant biomimetic beamforming baffle prototypes augmented with local shape features
- Source :
- The Journal of the Acoustical Society of America. 130:2562-2562
- Publication Year :
- 2011
- Publisher :
- Acoustical Society of America (ASA), 2011.
-
Abstract
- Horseshoe bats are known to exhibit non-rigid pinna deformations as part of their biosonar behaviors. During these deformation cycles, the pinnae of the animals alternate between upright and bent shape configurations that differ in their overall geometry as well as in the shapes and relative positions of local shape features. Artificial baffle prototypes have been designed to emulate these deforming bat pinnae. The prototype shapes were designed by augmenting an obliquely truncated cone with biomimetic local shape features. The prototype was implemented using elastic (synthetic rubber) materials. The deformation of the structure was accomplished through a simple actuation mechanism that was inserted on the back side of the artificial pinna. Features of the horseshoe bat pinna that have been evaluated for this study include a prominent vertical ridge that runs along the entire inner pinna surface, the antitragus along with the lateral incisions that separate it from the back portion of the pinna, and a pin...
- Subjects :
- Acoustics and Ultrasonics
biology
business.industry
Pinna
Acoustics
Bent molecular geometry
Baffle
Deformation (meteorology)
biology.organism_classification
Antitragus
Horseshoe bat
Ridge (differential geometry)
Mechanism (engineering)
medicine.anatomical_structure
Optics
Arts and Humanities (miscellaneous)
medicine
business
Geology
Subjects
Details
- ISSN :
- 00014966
- Volume :
- 130
- Database :
- OpenAIRE
- Journal :
- The Journal of the Acoustical Society of America
- Accession number :
- edsair.doi...........59327b2d527ea351cabdc4640fc7b589