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With this paper we present a practically relevant investigation of current, commercially available MEMS microphones (Micro-ElectroMechanical Systems). We compared the static noise floor exhibited by single and various parallel MEMS microphone configurations and a conventional and commonly used electret capsule, as well as the directivity patterns of selected configurations. The results suggest that while current types are exhibiting an already acceptable static noise floor, a direct parallel circuit of MEMS microphones allows further reductions of the noise floor close to the theoretical value of 3 dB SPL per doubling of number of microphones while maintaining omnidirectionality below 5 kHz.
Author (s): Kissner, Sven; Bitzer, Jörg
Affiliation:
Jade University of Applied Sciences, Oldenburg, Germany
(See document for exact affiliation information.)
AES Convention: 140
Paper Number:9486
Publication Date:
2016-05-06
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Session subject:
Audio Equipment and Audio Formats
Permalink: https://aes2.org/publications/elibrary-page/?id=18185
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Kissner, Sven; Bitzer, Jörg; 2016; Analysis of Current MEMS Microphones for Cost-Effective Microphone Arrays—A Practical Approach [PDF]; Jade University of Applied Sciences, Oldenburg, Germany; Paper 9486; Available from: https://aes2.org/publications/elibrary-page/?id=18185
Kissner, Sven; Bitzer, Jörg; Analysis of Current MEMS Microphones for Cost-Effective Microphone Arrays—A Practical Approach [PDF]; Jade University of Applied Sciences, Oldenburg, Germany; Paper 9486; 2016 Available: https://aes2.org/publications/elibrary-page/?id=18185