| Issue |
MATEC Web Conf.
Volume 320, 2020
V All-Russian Conference of Young Scientists and Specialists “Acoustics of the Environment” (ASO-2020)
|
|
|---|---|---|
| Article Number | 00006 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/matecconf/202032000006 | |
| Published online | 24 September 2020 | |
Decay of Non-Diffuse Sound Fields in a Room
1 BMSTU, Power Engineering Department, 105005, Moscow, Russia
2 Andreyev Acoustic Institute, 117036, Moscow, Russia
* Corresponding author: Allena-Nov@yandex.ru
The paper presents the results of a study of a non-diffuse sound field decay in a room. In a laboratory experiment, a model of a room in the form of a rectangular parallelepiped with a size of 0.7 x 0.4 x 0.4 m is used. Two non-parallel walls are coated with sound absorbing material. Sound scattering elements can be placed on the third wall which is perpendicular to the absorbing ones, which allows to change the field diffusion degree. The sound field in such a room has a strong anisotropy, its energy decays according to the exponential-power law. Sound decay curves were measured at various positions of the sound source and microphone at frequencies of 4 kHz. The decay curves are compared, their dependence on the relative position of the sound source and microphone is analyzed.
© The Authors, published by EDP Sciences, 2020
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