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arXiv · 1904.01477

Mimicking the active cochlea with a fluid-coupled array of subwavelength Hopf resonators

Habib Ammari·Bryn Davies
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Abstract

We present a design for an acoustic metamaterial that mimics the behaviour of the active cochlea. This material is composed of a size-graded array of cylindrical subwavelength resonators, has similar dimensions to the cochlea and is able to reproduce the frequency separation of audible frequencies. Non-linear amplification is introduced to the model in order to replicate the behaviour of the cochlear amplifier. This formulation takes the form of a fluid-coupled array of Hopf resonators. We seek solutions based on a modal decomposition, so as to retain the physically-derived coupling between resonators.

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Habib Ammari, Bryn Davies. 2019-04-02. Mimicking the active cochlea with a fluid-coupled array of subwavelength Hopf resonators. https://doi.org/10.1098/rspa.2019.0870

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