Fully steerable collocated first-order cardioid microphone array acoustic beam-pattern

• Autorzy: Nnonyelu Chibuzo

Identyfikatory

DOI

10.15199/48.2020.12.14

Warianty tytułu

PL

W pełni sterowalne formowanie wiązki akustycznej triady w kształcie serca

• Języki publikacji: EN

Abstrakty

EN

In the paper, a data-independent beamforming method capable of fully steering the mainlobe of the first-order cardioid triad is presented. This proposed method exploits the multi-pattern operating mode of the dual-diaphragm microphones design of some first-order cardioid microphones to extend the polar-azimuth space in to which the mainlobe of such cardioid triad to the full sphere. The beamwidth and directivity of the proposed collocated array are derived and analyzed.

PL

W artykule zaprezentowano metodę formowania wiązki akustycznej zdolnej do kierowania głównego listka triady w kształcie serca. Otrzymanie takiej charakterystyki umożliwia mikrofon z dwoma diafragmami. Analizowano szerokość i kierunkowość wiązki.

Słowa kluczowe

EN

cardioid microphones; acoustic beam focusing; acoustic beam steering; acoustic signal processing; array signal processing; directional sensors

PL

mikrofon; wiązka akustyczna; charakterystyka w kształcie serca

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2020
• Tom: R. 96, nr 12
• Strony: 76--80
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Nnonyelu Chibuzo

• Department of Electrical Engineering, University of Nigeria, Nsukka, 410001 Enugu, Nigeria

Bibliografia

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• [2] Nnonyelu C. J., Wong K. T., and Wu Y. I.: Cardioid microphones/ hydrophones in a collocated/orthogonal triad – a new beamformer with no beam-pointing error, The Journal of the Acoustical Society of America, 145(1), pp. 575–588, January 2019.
• [3] Nehorai A. and Paldi E. : Acoustic vector-sensor array processing, IEEE Transactions on Signal Processing, 42(9), pp. 2481–2491, September 1994.
• [4] Wong K. T. and Zoltowski M. D.: Closed-form underwater acoustic direction-finding with arbitrarily spaced vector hydrophones at unknown locations, IEEE Journal of Oceanic Engineering, 22(4), pp. 649–658, October 1997.
• [5] D’Spain G. L. , Hodgkiss W. S. , and Edmonds G. L. : Energetics of the deep ocean’s infrasonic sound field, The Journal of the Acoustical Society of America, 89(3), pp. 1134–1158, March 1991.
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• [9] Nnonyelu C. J. and Morris Z. N.: Acoustical direction finding using a bayesian regularized multilayer perceptron artificial neural networks on a tri-axial velocity sensor, International Journal of Mechatronics, Electrical and Computer Technology, 10(35), January 2020.
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• [12] Yntema D. R., Druyvesteyn W. F., and Elwenspoek M.: A four particle velocity sensor device, The Journal of the Acoustical Society of America, 119(2), pp. 943–951, February 2006.
• [13] Eargle J., The Microphone Book, 2nd ed. Massachusetts: Focal Press, 2005.
• [14] Ballou G., Ciaudelli J., and Schmitt V., Electroacoustic Devices: Microphones and Loudspeakers, G. Ballou, Ed. Oxford, UK: Focal Press, 2009.
• [15] Torio G. and Segota J.: Unique directional properties of dualdiaphragm microphones, Engineering, 2000.
• [16] Huang Y. and Benesty J., Eds., Audio Signal Processing for Next-Generation Multimedia Communication Systems. Boston: Kluwer Academic Publishers, 2004.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).