摘要
文章定量地讨论了有源护耳器的基本原理和在设计使用中应该注意的问题,给出了一种比较实用的结构及其实验结果,说明了有源控制的作用主要在于有目的的改变护耳器的力学阻抗,以提高其低频降噪效果。
In this paper, the basic principle and problems meriting attention in the design and application of active ear defender are discussed quantitatively. A feasible structure and experimental results are given. It is illustrated that the chief significance of active control is to change the mechanical impedance of the ear defender accordingly, and because of this mechanism, the effectiveness of noise attenuation in the low frequency range is improved.
出处
《声学学报》
EI
CSCD
北大核心
1991年第2期122-127,共6页
Acta Acustica
