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Bio-inspired frequency agile acoustic system

Guerreiro, José and Jackson, Joseph C. and Windmill, James F.C. (2017) Bio-inspired frequency agile acoustic system. In: IEEE Sensors 2016. IEEE, Piscataway. ISBN 9781479982875

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Natural passive mechanical systems such as ear tympanic membranes may show active responses by incorporating feedback mechanisms which then affect their mechanical structure. In this paper, the moth’s auditory system is used as a biological model of inspiration. A smart acoustic system which alters its natural resonance frequency was developed. Experimental results, given by a proposed-built real-time embedded system, show time and amplitude dependency towards dynamic frequency adaptation according to the intensity of acoustic input signals.