Influence of phase correction on the acoustic impedance of circular planar sources

• Autorzy: Kos P. , Leniowska L.
• Języki publikacji: EN

Abstrakty

EN

In this work, the influence of velocity distribution phase correction on the acoustic impedance of a circular source located in an infinite baffle is analyzed. It has been observed that by turning back a velocity distribution phase by modifying the radiating surface shape in a special way, obtaining a more coherent acoustic radiation is possible. This problem has been analyzed during earlier investigations, with attention focused on the directivity of some acoustic sources [1]. The aim of this paper is to calculate the acoustic impedance which allows the examination of such a "phase correction" effect on the acoustic radiation of the considered sound sources. The result was achieved by numerical calculation with the use of Hankel representation of the acoustic impedance.

Słowa kluczowe

EN

sources of high directivity; phase correction; acoustic impedance

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2007
• Tom: Vol. 32, No. 4
• Strony: 895--901
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Kos P.

• University of Rzeszów Institute of Technology Rejtana 16A, 35-310 Rzeszów, Poland

autor

Leniowska L.

• University of Rzeszów Institute of Technology Rejtana 16A, 35-310 Rzeszów, Poland

Bibliografia

• [1] LENIOWSKA L., WYRZYKOWSKI R., Effect of phase shifts on the directivity of acoustic plane sources, ACUSTICA - Acta Acustica, 86, 3, 405-412 (2000).
• [2] WYRZYKOWSKI R. et al., Chosen issues of the theory of acoustic field [in Polish], FOSZE, Rzeszów 1994.
• [3] PRUDNIKOV A. P., BYCZKOW JU. A., MARICZEW O. J., Integrały i Rjady [in Russian],Wyd. Nauka, Moskwa 1983.
• [4] BARONE A„ GALLEGO-JUAREZ J. A., Flexural vibrating free edge plater with stepped thickness for generating high directional ultrasonic radiation, Acoust. Soc. Am., 51, 953-959 (1972).