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Related Experiment Videos

Micromechanical resonator array for an implantable bionic ear.

Mark Bachman1, Fan-Gang Zeng, Tao Xu

  • 1Department of Electrical and Computer Engineering, University of California, Irvine, CA 92697, USA. mbachman@uci.edu

Audiology & Neuro-Otology
|January 28, 2006
PubMed
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A novel multi-resonant transducer replaces cochlear implant speech processors by passively splitting sound into frequency bands. This micro-machined polymer resonator offers low latency and low power for a potential bionic ear device.

Area of Science:

  • Biomedical Engineering
  • Acoustics
  • Materials Science

Background:

  • Traditional cochlear implants rely on complex digital speech processors.
  • These processors require analog-to-digital conversion and significant power.
  • Existing systems face limitations in latency and form factor.

Purpose of the Study:

  • To introduce a novel multi-resonant transducer as a replacement for traditional cochlear implant speech processors.
  • To demonstrate passive frequency splitting without digital conversion.
  • To evaluate the suitability of the transducer for a completely implantable bionic ear.

Main Methods:

  • Fabrication of a multi-resonant transducer using micro-machined polymer resonators.
  • Implementation of parallel mechanical filtering for passive frequency sub-band splitting.

Related Experiment Videos

  • Evaluation of device characteristics including latency, power consumption, and form factor.

    • Main Results:

    • The multi-resonant transducer successfully splits sound into frequency sub-bands passively.
    • The device exhibits low latency due to parallel mechanical filtering.
    • The transducer has a small form factor (<1 cm) and low power requirements.
    • High channel capability was achieved.

    Conclusions:

    • The developed multi-resonant transducer is a viable, passive alternative to traditional cochlear implant speech processors.
    • Its low latency, low power, and compact size make it ideal for a completely implantable bionic ear.
    • This technology offers a simplified and potentially more efficient approach to cochlear implant signal processing.