Acoustic Camera Design with Different Types of MEMS Microphone Arrays

Sanja Grubesa; Jasna Stamac; Mia Suhanek

doi:doi:10.11648/j.ajese.20190304.14

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Acoustic Camera Design with Different Types of MEMS Microphone Arrays

Sanja Grubesa, Jasna Stamac, Mia Suhanek

Published in American Journal of Environmental Science and Engineering (Volume 3, Issue 4)

Received: 3 September 2019 Accepted: 22 October 2019 Published: 6 December 2019

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Abstract

This paper investigates different approaches in designing an acoustic camera with respect to the shape of the camera as well as the number of microphones and their position on the camera. Micro electro-mechanical systems (MEMS) microphones are used in this research for the purpose of designing an acoustic camera. Several simulations implemented in MATLAB were performed for square MEMS microphone arrays, bearing in mind our primary goal, which is to design a broadband frequency range acoustic camera with MEMS microphones. In addition, a microphone array in the shape of a hemisphere was designed in order to compare all of the obtained results. Results gathered in the simulations have shown that using the square arrays and a hemispherical array enables us to construct four different broadband frequency range acoustic cameras. All of the considered versions of an acoustic camera have a respectable gain in the desired direction (i.e. the gain of the main lobe) and, in addition, a significant attenuation of side lobes. Keeping in mind the aforementioned requirements (i.e. the main lobe gain and attenuation of side lobes) it can be concluded that, from all of the considered designs, the best design is the acoustic camera with 24 MEMS microphone square array.

Published in	American Journal of Environmental Science and Engineering (Volume 3, Issue 4) This article belongs to the Special Issue Smart Cities – Innovative Approaches
DOI	10.11648/j.ajese.20190304.14
Page(s)	88-93
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

MEMS Microphones, Beamforming, Microphones Array, Acoustic Camera

References

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[2]	Application note AN4426, “Tutorial for MEMS microphones”.
[3]	S. Walser, C. Siegel, M. Winter, G. Feiertag, M. Loibl and A. Leidl, “MEMS microphones with narrow sensitivity distribution”, Sensors and Actuators A: Physical, 247, 663-670, 2016.
[4]	Industry’s strongest MEMS microphone portfolio driven by TDK.
[5]	R. Barham, “New paradigm for environmental noise measurement,” Proc. Inst. Acoust. 36 (3), 266–268, 2014.
[6]	K. Tontiwattanakul, J. Hongweing, P. Trakulsatjawat and P. Noimai, “Design and build of a planar acoustic camera using digital microphones”, 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST), 2019.
[7]	C. A. Kardous and P. B. Shaw, “Evaluation of smartphone sound measurement applications,” J. Acoust. Soc. Am. 135 (4), EL186–EL192, 2014.
[8]	S. Grubesa, A. Petosic, M. Suhanek and I. Durek, “Mobile crowdsensing accuracy for noise mapping in smart cities”, Automatika, 59 (3), 287-294, 2018.
[9]	I. Hafizovic, C. C. Nilsen, M. Kjølerbakken and V. Jahr “Design and implementation of a MEMS microphone array system for real-time speech acquisition”, Applied Acoustics 73 (2), 132-143, 2012.
[10]	I. Durek, T. Grubesa and N. Orlic, “Measurements of analog MEMS microphones”, Second International Colloquium on Smart Grid Metrology, SMAGRIMET 2019.
[11]	Roig, Elisabet Tiana, “Beamforming Techniques for Environmental Noise”, Brüel & Kjær, 2009.
[12]	J. J. Christensen and J. Hald, “Technical Review: Beamforming”, Brüel & Kjær, 2004.
[13]	E. T. Roig, F. Jacobsen and E. F. Grande, “Beamforming with a circular microphone array for localization of environmental noise sources”, The Journal of the Acoustical Society of America, 128, 2010.
[14]	J. Stamac, S. Grubesa and A. Petosic, “Designing the Acoustic Camera using MATLAB with respect to different types of microphone arrays”, Second International Colloquium on Smart Grid Metrology, SMAGRIMET 2019.
[15]	Application Note AN-1140, “Microphone Array Beamforming”.

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APA Style

Sanja Grubesa, Jasna Stamac, Mia Suhanek. (2019). Acoustic Camera Design with Different Types of MEMS Microphone Arrays. American Journal of Environmental Science and Engineering, 3(4), 88-93. https://doi.org/10.11648/j.ajese.20190304.14

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ACS Style

Sanja Grubesa; Jasna Stamac; Mia Suhanek. Acoustic Camera Design with Different Types of MEMS Microphone Arrays. Am. J. Environ. Sci. Eng. 2019, 3(4), 88-93. doi: 10.11648/j.ajese.20190304.14

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AMA Style

Sanja Grubesa, Jasna Stamac, Mia Suhanek. Acoustic Camera Design with Different Types of MEMS Microphone Arrays. Am J Environ Sci Eng. 2019;3(4):88-93. doi: 10.11648/j.ajese.20190304.14

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@article{10.11648/j.ajese.20190304.14,
  author = {Sanja Grubesa and Jasna Stamac and Mia Suhanek},
  title = {Acoustic Camera Design with Different Types of MEMS Microphone Arrays},
  journal = {American Journal of Environmental Science and Engineering},
  volume = {3},
  number = {4},
  pages = {88-93},
  doi = {10.11648/j.ajese.20190304.14},
  url = {https://doi.org/10.11648/j.ajese.20190304.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajese.20190304.14},
  abstract = {This paper investigates different approaches in designing an acoustic camera with respect to the shape of the camera as well as the number of microphones and their position on the camera. Micro electro-mechanical systems (MEMS) microphones are used in this research for the purpose of designing an acoustic camera. Several simulations implemented in MATLAB were performed for square MEMS microphone arrays, bearing in mind our primary goal, which is to design a broadband frequency range acoustic camera with MEMS microphones. In addition, a microphone array in the shape of a hemisphere was designed in order to compare all of the obtained results. Results gathered in the simulations have shown that using the square arrays and a hemispherical array enables us to construct four different broadband frequency range acoustic cameras. All of the considered versions of an acoustic camera have a respectable gain in the desired direction (i.e. the gain of the main lobe) and, in addition, a significant attenuation of side lobes. Keeping in mind the aforementioned requirements (i.e. the main lobe gain and attenuation of side lobes) it can be concluded that, from all of the considered designs, the best design is the acoustic camera with 24 MEMS microphone square array.},
 year = {2019}
}

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TY  - JOUR
T1  - Acoustic Camera Design with Different Types of MEMS Microphone Arrays
AU  - Sanja Grubesa
AU  - Jasna Stamac
AU  - Mia Suhanek
Y1  - 2019/12/06
PY  - 2019
N1  - https://doi.org/10.11648/j.ajese.20190304.14
DO  - 10.11648/j.ajese.20190304.14
T2  - American Journal of Environmental Science and Engineering
JF  - American Journal of Environmental Science and Engineering
JO  - American Journal of Environmental Science and Engineering
SP  - 88
EP  - 93
PB  - Science Publishing Group
SN  - 2578-7993
UR  - https://doi.org/10.11648/j.ajese.20190304.14
AB  - This paper investigates different approaches in designing an acoustic camera with respect to the shape of the camera as well as the number of microphones and their position on the camera. Micro electro-mechanical systems (MEMS) microphones are used in this research for the purpose of designing an acoustic camera. Several simulations implemented in MATLAB were performed for square MEMS microphone arrays, bearing in mind our primary goal, which is to design a broadband frequency range acoustic camera with MEMS microphones. In addition, a microphone array in the shape of a hemisphere was designed in order to compare all of the obtained results. Results gathered in the simulations have shown that using the square arrays and a hemispherical array enables us to construct four different broadband frequency range acoustic cameras. All of the considered versions of an acoustic camera have a respectable gain in the desired direction (i.e. the gain of the main lobe) and, in addition, a significant attenuation of side lobes. Keeping in mind the aforementioned requirements (i.e. the main lobe gain and attenuation of side lobes) it can be concluded that, from all of the considered designs, the best design is the acoustic camera with 24 MEMS microphone square array.
VL  - 3
IS  - 4
ER  -

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Author Information

Sanja Grubesa

Department of Electroacoustics, Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia
Jasna Stamac

Geolux d. o. o., Zagreb, Croatia
Mia Suhanek

Department of Electroacoustics, Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia

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Plain Text BibTeX RIS

APA Style

Sanja Grubesa, Jasna Stamac, Mia Suhanek. (2019). Acoustic Camera Design with Different Types of MEMS Microphone Arrays. American Journal of Environmental Science and Engineering, 3(4), 88-93. https://doi.org/10.11648/j.ajese.20190304.14

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ACS Style

Sanja Grubesa; Jasna Stamac; Mia Suhanek. Acoustic Camera Design with Different Types of MEMS Microphone Arrays. Am. J. Environ. Sci. Eng. 2019, 3(4), 88-93. doi: 10.11648/j.ajese.20190304.14

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AMA Style

Sanja Grubesa, Jasna Stamac, Mia Suhanek. Acoustic Camera Design with Different Types of MEMS Microphone Arrays. Am J Environ Sci Eng. 2019;3(4):88-93. doi: 10.11648/j.ajese.20190304.14

Copy | Download

@article{10.11648/j.ajese.20190304.14,
  author = {Sanja Grubesa and Jasna Stamac and Mia Suhanek},
  title = {Acoustic Camera Design with Different Types of MEMS Microphone Arrays},
  journal = {American Journal of Environmental Science and Engineering},
  volume = {3},
  number = {4},
  pages = {88-93},
  doi = {10.11648/j.ajese.20190304.14},
  url = {https://doi.org/10.11648/j.ajese.20190304.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajese.20190304.14},
  abstract = {This paper investigates different approaches in designing an acoustic camera with respect to the shape of the camera as well as the number of microphones and their position on the camera. Micro electro-mechanical systems (MEMS) microphones are used in this research for the purpose of designing an acoustic camera. Several simulations implemented in MATLAB were performed for square MEMS microphone arrays, bearing in mind our primary goal, which is to design a broadband frequency range acoustic camera with MEMS microphones. In addition, a microphone array in the shape of a hemisphere was designed in order to compare all of the obtained results. Results gathered in the simulations have shown that using the square arrays and a hemispherical array enables us to construct four different broadband frequency range acoustic cameras. All of the considered versions of an acoustic camera have a respectable gain in the desired direction (i.e. the gain of the main lobe) and, in addition, a significant attenuation of side lobes. Keeping in mind the aforementioned requirements (i.e. the main lobe gain and attenuation of side lobes) it can be concluded that, from all of the considered designs, the best design is the acoustic camera with 24 MEMS microphone square array.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Acoustic Camera Design with Different Types of MEMS Microphone Arrays
AU  - Sanja Grubesa
AU  - Jasna Stamac
AU  - Mia Suhanek
Y1  - 2019/12/06
PY  - 2019
N1  - https://doi.org/10.11648/j.ajese.20190304.14
DO  - 10.11648/j.ajese.20190304.14
T2  - American Journal of Environmental Science and Engineering
JF  - American Journal of Environmental Science and Engineering
JO  - American Journal of Environmental Science and Engineering
SP  - 88
EP  - 93
PB  - Science Publishing Group
SN  - 2578-7993
UR  - https://doi.org/10.11648/j.ajese.20190304.14
AB  - This paper investigates different approaches in designing an acoustic camera with respect to the shape of the camera as well as the number of microphones and their position on the camera. Micro electro-mechanical systems (MEMS) microphones are used in this research for the purpose of designing an acoustic camera. Several simulations implemented in MATLAB were performed for square MEMS microphone arrays, bearing in mind our primary goal, which is to design a broadband frequency range acoustic camera with MEMS microphones. In addition, a microphone array in the shape of a hemisphere was designed in order to compare all of the obtained results. Results gathered in the simulations have shown that using the square arrays and a hemispherical array enables us to construct four different broadband frequency range acoustic cameras. All of the considered versions of an acoustic camera have a respectable gain in the desired direction (i.e. the gain of the main lobe) and, in addition, a significant attenuation of side lobes. Keeping in mind the aforementioned requirements (i.e. the main lobe gain and attenuation of side lobes) it can be concluded that, from all of the considered designs, the best design is the acoustic camera with 24 MEMS microphone square array.
VL  - 3
IS  - 4
ER  -

Copy | Download