论文期刊

The experimental study on low frequency sound transmission characteristics of the acoustic black hole




作者: Xiao Liang, Zhuo Zhou and Jiu Hui Wu
发表/完成日期: 2019-10-23
期刊名称: Modern Physics Letters B
期卷: Vol. 33, No. 36, 2019
相关文章: 梁霄_The experimental study on low frequency sound transmission characteristics of the acoustic black hole.pdf   
论文简介
The acoustic black hole has good sound insulation performance in low frequency range.
The transmission and insulation characteristics of acoustic black hole is investigated
by experiments. First, we study the transmission and insulation characteristics of the
acoustic black hole by numerical simulation. Second, we studied the sound transmission characteristic of multi-level acoustic black hole. Finally, the sound transmission and
insulation characteristics of the acoustic black hole are studied by experiments. The influence of the acoustic black hole tip’s diameter on sound insulation coefficient is studied.
The sound transmission characteristics of the first, two and three level acoustic black
holes are also studied by experiments. Our numerical results show that low frequency
acoustic energy can be effectively focused at the tip of the acoustic black hole, and can
be effectively insulated by the acoustic black hole. Our numerical results are verified by
the experimental results. Our study can provide a feasible method for controlling the
low frequency noise.