Acoustic Camera Design with Different Types of MEMS Microphone Arrays (CROSBI ID 271730)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Grubeša, Sanja ; Stamać, Jasna ; Suhanek, Mia
engleski
Acoustic Camera Design with Different Types of MEMS Microphone Arrays
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.
MEMS Microphones, Beamforming, Microphones Array, Acoustic Camera
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Podaci o izdanju
3 (4)
2019.
88-93
objavljeno
2578-7985
2578-7993
10.11648/j.ajese.20190304.14
Povezanost rada
Elektrotehnika, Informacijske i komunikacijske znanosti, Interdisciplinarne tehničke znanosti