Volume 144, Number 3, November 2023
|Number of page(s)
|Biological and soft matter physics
|15 November 2023
A non-linear delayed resonator for mimicking the hearing haircells
Institut Langevin, ESPCI Paris, Université PSL, CNRS - 75005 Paris, France
(a) E-mail: firstname.lastname@example.org (corresponding author)
Received: 12 September 2023
Accepted: 31 October 2023
The auditory system possesses remarkable characteristics: super sensitivity and frequency selectivity. However, these traits come at the cost of non-fidelity due to non-linear effects. The culprit behind this active behavior is likely the haircells, as suggested by some in vivo observations and theoretical studies. These haircells appear to operate as non-linear oscillators near a Hopf bifurcation. In this article, we experimentally design a single delayed Hopf resonator to examine its dynamic responses and uncover striking parallels with the human ear. After a systematic characterization of this resonator, we experimentally verify on this single resonator two non-linear phenomena that mimic hearing distortions. This provides further support for hearing models based on Hopf bifurcation.
© 2023 The author(s)
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