ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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6
Issue
vol 65 / June, 2022
Article

DOI 10.17586/0021-3454-2015-58-3-221-225

UDC 621.391.84

MICROPHONE ARRAY FOR DIRECTIONAL ACOUSTIC ANTENNA IMPLEMENTATION

A. V. Krivosheikin
Saint Petersburg State University of Film and Television, Saint Petersburg, 191119, Russian Federation; Professor


S. V. Perelygin
Saint Petersburg State University of Film and Television, Saint Petersburg, 191119, Russian Federation; postgraduate, engineer


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Abstract. A new method of signal processing in microphone array is proposed. The array consisting of two identical omni-directional microphones is considered; the array receives signals from two broadband acoustic sources located in different angular positions relative to the array. The proposed method provides directional reception of signal from one source and attenuation of the other source signal. Mathematical expressions for microphone array weight coefficients are presented.  
Keywords: microphone array, acoustic antenna, angular selectivity, narrowband and broadband signals, signal spectrum, weighted summation.