Abstract
This paper presents a physical and mathematical model of a filter. It was built on the basis of segmentation of its components and description of acoustic properties of these components with a transmission matrix. Also formulae for calculating transmission matrices for many specific solutions of the filter have been given in a convenient and generalized form. The presented model is limited to: the conditions of propagation of a harmonic plane acoustic wave, small dimensions of the holes in the perforation and laminar flow through these holes.References
[1] G. BRZÓZKA, J. DEGÓRSKI, H. KACZMAREK, On calculations of acoustic filters with a perforated tube (in Polish), Proc. XXXI Open Seminar on Acoustics OSA-84, Warszawa 1984, pp. 102-106.
[2] G. BRZÓZKA, T. WIŚNIEWSKI, On certain properties of mufflers with perforated tubes (in Polish), Proc. Conf. KONES'85, Poznań-Błażejewko, 1985, pp. 38-43.
[3] G. BRZÓZKA, Acoustic filters with a perforated tube (in Polish) Arch. Akustyki 22, 4, 329-351 (1987), and in English Arch. Acoustics 12, 3 and 4 (1987).
[2] G. BRZÓZKA, T. WIŚNIEWSKI, On certain properties of mufflers with perforated tubes (in Polish), Proc. Conf. KONES'85, Poznań-Błażejewko, 1985, pp. 38-43.
[3] G. BRZÓZKA, Acoustic filters with a perforated tube (in Polish) Arch. Akustyki 22, 4, 329-351 (1987), and in English Arch. Acoustics 12, 3 and 4 (1987).
