Abstract: The following research relates to an acoustic unit used to construct acoustic building walls for improving the acoustic environment in music schools, concert halls, home cinemas, recording studios, offices, restaurants and alike. In order to have an optimal acoustical environment, it is necessary to have two acoustical elements namely: the sound diffusion property and sound absorption property, particularly, in a balanced manner. |
Keywords and phrases: acoustic unit, sound diffusion, sound absorption, Schroeder diffuser, Helmholtz absorber, gypsum board.
How to cite this article: M. Vilnītis, S. Rubene and A. Veinbergs, Multifunctional acoustic unit and its acoustic potentials dependence on material structure and method of manufacturing, Far East Journal of Mechanical Engineering and Physics 3 (2022), 1-9. DOI: 10.17654/2229451122001
This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License
References:
[1] Jens Prager, On the acoustics of small partially open enclosures densely packed with active and passive installations, Ph.D. Thesis, Technische Universität, Berlin, February 2008. [2] Lothar Cremer and Helmut A. Müller, Die wissenschaflichen Grundlagen der Raumakustik, Volume II, S. Hirzel Verlag Stuttgart (German), 2. auflage edition, 1976. [3] A. Krokstad, S. Strom and S. Sorsdal, Calculating the acoustical room response by the use of a ray tracing technique, J. Sound Vib. 8(1) (1967), 118-125. [4] A. Le Bot and A. Bocquillet, Comparison of an integral equation on energy and the ray-tracing technique in room acoustics, J. Acoust. Soc. Am. 108(4) (2000), 1732-1740. [5] Eva-Marie Norsal, Murray Hodgson and Ian Ashdown, Improved algorithms and methods for room sound-field prediction by acoustical radiosity in arbitrary polyhedral rooms, J. Acoust. Soc. Am. 116(2) (2004), 970-980. [6] Eva-Marie Norsal, Murray Hodgson and Ian Ashdown, Investigation of the validity of radiosity for sound-field prediction in cubic rooms, J. Acoust. Soc. Am. 116(6) (2004), 3305-3514. [7] Jeffrey Borish, Extension of the image model to arbitrary polyhedra, J. Acoust. Soc. Am. 75(3) (1984), 1827-1836. [8] Jont B. Allen and David A. Berkley, Image method for efficiently simulating small-room acoustics, J. Acoust. Soc. Am. 65(4) (1979), 943-950. [9] LBN 016-15 Architectural acoustics. [10] ISO 17497-1 specifies a method of measuring the random-incidence scattering coefficient of surfaces as caused by surface roughness. [11] ISO 17497-2:2012 Measurement of the directional diffusion coefficient in a free field.
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