Abstract

The article considers the problem of sound absorption by a monopole in a room with perfectly hard walls. The radiation impedance of a monopole in the form of a piston built into one of the walls was found. The impedance of the monopole is calculated that ensures the maximum damping constant of the room first natural resonance. It is shown that in the general case, a monopole with an impedance chosen in a certain way absorbs sound more efficiently than a Helmholtz resonator. The proposed approach can be used to design active sound absorption systems for small rooms.

中文翻译：

---

低频室内的单极子可最大程度地吸收声音

摘要

本文考虑了在墙壁坚硬的房间中单极子吸收声音的问题。发现了一个内置在其中一个壁中的活塞形式的单极子的辐射阻抗。计算单极天线的阻抗，以确保房间第一自然共振的最大阻尼常数。结果表明，通常情况下，以某种方式选择阻抗的单极天线比亥姆霍兹谐振器更有效地吸收声音。所提出的方法可用于设计小型房间的主动吸声系统。