Cited by 74Advanced MEMS and NEMS TechnologiesHearing, Cochlea, Tinnitus, GeneticsMechanical and Optical Resonators

The DOI matches its Crossref record; 58 of the 58 references it cites were found in a registry or an index.

Neuromorphic acoustic sensing using an adaptive microelectromechanical cochlea with integrated feedback

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Abstract

Many speech processing systems struggle in conditions with low signal-to-noise ratios and in changing acoustic environments. Adaptation at the transduction level with integrated signal processing could help to address this; in human hearing, transduction and signal processing are integrated and can be adaptively tuned for noisy conditions. Here we report a microelectromechanical cochlea as a bio-inspired acoustic sensor with integrated signal processing functionality. Real-time feedback is used to tune the sensing and processing properties, and dynamic switching between linear and nonlinear characteristics improves the detection of signals in noisy conditions, increases the sensor dynamic range and enables adaptation to changing acoustic environments. The transition to nonlinear behaviour is attributed to a Hopf bifurcation and we experimentally validate its dependence on sensor and feedback parameters. We also show that output-signal coupling between two coupled sensors can increase the frequency coverage.

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Research works printed but not linked: 4

  1. Kandel, E. R., Schwartz, J. H. & Jessell, T. M. (eds) Principles of Neural Science 4th edn (Elsevier, 2000).
  2. van Schaik, A. & Liu, S.-C. AER EAR: a matched silicon cochlea pair with address event representation interface. IEEE Trans. Circuits Syst. I, Reg. Papers 5, 4213–4216 (2005).
  3. Liu, S.-C., van Schaik, A., Minch, B. A. & Delbruck, T. Asynchronous binaural spatial audition sensor with 2 × 64 × 4 channel output. IEEE Trans. Biomed. Circuits Syst. 8, 453–464 (2013).
  4. Strogatz, S. H. Nonlinear Dynamics and Chaos: With Applications to Physics, Biology, Chemistry and Engineering (Westview Press, 2000).

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Metadata

Authors
Lenk, C., Hövel, P., Ved, K., Durstewitz, S., Meurer, T., Fritsch, T., Männchen, A., Küller, J., Beer, D., Ivanov, T., & Ziegler, M.
Affiliations
  • Technische Universität Ilmenau (DE)
  • University College Cork (IE)
  • Karlsruhe Institute of Technology (DE)
  • Fraunhofer Institute for Digital Media Technology (DE)
Corresponding author
Lenk, Claudia
Venue
Nature Electronics
Published
2023-05-04
Volume
6
Issue
5
Pages
370-380
ISSN
2520-1131 (ISSN-L)
OpenAlex
W4382644231
Cited by
70
References
58
Citations by year
2026: 17 · 2025: 28 · 2024: 18 · 2023: 7
FWCI
5.21
Type
journal article
Language
en
Open access
Locations
  • Nature Electronics (publishedVersion, cc-by)
  • Repository KITopen (Karlsruhe Institute of Technology) (submittedVersion, cc-by)
  • Common Library Network (Der Gemeinsame Bibliotheksverbund) (submittedVersion, cc-by)
  • Fraunhofer-Publica (Fraunhofer-Gesellschaft) (submittedVersion)
  • KITopen (cc-by)
Funders
  • Deutsche Forschungsgemeinschaft (434434223)
  • Carl-Zeiss-Stiftung (MemWerk)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced MEMS and NEMS Technologies
  • Life Sciences › Neuroscience › Sensory Systems › Hearing, Cochlea, Tinnitus, Genetics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Mechanical and Optical Resonators
Keywords
bio-inspired sensors, feedback control, Hopf bifurcation, low signal-to-noise ratio detection, frequency coverage, speech processing

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