Active noise control
Active noise control
复制标题
DOI：
10.1109/79.248551
复制
发表时间：
1993-10-01
影响因子：
14.9
通讯作者：
Nelson, P. A.
中科院分区：
文献类型：
--
作者：
Elliott, S. J.;Nelson, P. A.
主动噪声控制利用与低频声音相关的长波长。它的工作原理是原始一次声源产生的声场与其他二次声源产生的声场之间的相消干涉，这些声场的声输出是可以控制的。研究了不同主动噪声控制系统的声学目标和用于实现这些目标的电气控制方法。为了了解主动噪声控制的优点和局限性，强调了对声学和电气控制背后的原理有一个清晰的理解的重要性。本文简要讨论了以三维声场为中心的主动声控制的物理基础
Active noise control exploits the long wavelengths associated with low frequency sound. It works on the principle of destructive interference between the sound fields generated by the original primary sound source and that due to other secondary sources, acoustic outputs of which can be controlled. The acoustic objectives of different active noise control systems and the electrical control methodologies that are used to achieve these objectives are examined. The importance of having a clear understanding of the principles behind both the acoustics and the electrical control in order to appreciate the advantages and limitations of active noise control is emphasized. A brief discussion of the physical basis of active sound control that concentrates on three-dimensional sound fields is presented.<>