Bio-inspired active amplification in a MEMS microphone using feedback computation

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Abstract

Auditory signal processing relies on feedback mechanisms between mechanical and electrical systems that work together to enhance acoustic conditioning. In this paper a nonlinear amplification mechanism in the mosquito's auditory system is exploited as a model of inspiration. An acoustic system that provides active amplification of sound was developed using feedback computation integrated with a MEMS microphone to implement the concept. Experimental results generated by a purpose-built embedded system show signal amplification and hysteresis which replicate the response shown by the biological mosquito’s hearing system as a function of input sound intensity.
Original languageEnglish
Title of host publicationIEEE Biomedical Circuits and Systems Conference 2017
Subtitle of host publicationThe Edge of Tomorrow in mHealth
Place of PublicationPiscataway, NJ
PublisherIEEE
Number of pages4
Publication statusAccepted/In press - 11 Aug 2017
EventIEEE Biomedical Circuits and Systems Conference 2017: The Edge of Tomorrow in mHealth - Turin, Italy
Duration: 19 Oct 201721 Oct 2017
http://biocas2017.org/

Conference

ConferenceIEEE Biomedical Circuits and Systems Conference 2017
Country/TerritoryItaly
CityTurin
Period19/10/1721/10/17
Internet address

Keywords

  • bio-inspired acoustic sensor system
  • active hearing
  • signal amplification
  • feedback computation
  • real-time embedded signal processing
  • prototyping

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