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Low-Power Embedded Audio Recording using MEMS Microphones

Laurent Latorre 1 Simon Chamaillé-Jammes 2
1 SmartIES - Smart Integrated Electronic Systems
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : This paper introduces the design of a low-power and low-cost audio recorder. Although the initial purpose is the study of wildlife behavior, the result can be applied to many other fields including urban noise cartography or industrial monitoring. The system is based on a minimal set of low-cost, off-the-shelf components (MEMS microphone, microcontroller, and SD card). Focus is given to autonomy both in terms of embedded energy and data storage. The paper demonstrates that both are improved by applying an online embedded compression to the audio data. Together with an ingenious use of available hardware resources, we were able to lower the overall power consumption compared to existing solutions by an order of magnitude, at equivalent audio quality.
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-02948842
Contributor : Laurent Latorre <>
Submitted on : Friday, September 25, 2020 - 10:06:34 AM
Last modification on : Tuesday, May 4, 2021 - 9:52:02 AM

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Laurent Latorre, Simon Chamaillé-Jammes. Low-Power Embedded Audio Recording using MEMS Microphones. 22th Symposium on Design, Test, Integration & Packaging of MEMS and MOEMS (DTIP), Jun 2020, Lyon, France. ⟨10.1109/DTIP51112.2020.9139147⟩. ⟨lirmm-02948842⟩

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