MATEC Web Conf.
Volume 320, 2020V All-Russian Conference of Young Scientists and Specialists “Acoustics of the Environment” (ASO-2020)
|Number of page(s)||7|
|Published online||24 September 2020|
Maximum Damping of the Lowest Room Eigenfrequency by a Monopole
1 BMSTU, Power Engineering Department, 105005, Moscow, Russian Federation
2 Andreyev Acoustic Institute, 117036, Moscow, Russian Federation
* Corresponding author: firstname.lastname@example.org
In this paper, we consider the problem of sound absorption by a monopole in a rectangular room with absolutely rigid walls. The absorption efficiency is characterized by the damping coefficients of free oscillations of the “monopole-room” system. The impedance of the monopole is found, at which the damping coefficient of the resonance of the system with the lowest natural frequency is maximum. The monopole with this impedance can be realized using an active control method that allows the required impedance to be achieved over a wide frequency band.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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