A Study on the Sound Absorption of Periodically Folded Barriers

주기적 구조를 갖는 굴절형 방음판의 흡음성능에 관한 연구

This study is aimed to numerically evaluate a sound absorption performance of periodically folded barriers. Based on the formulation for sound absorption of a locally reacting surface in a periodic arrangement, variations of the sound absorption with parameters such as the folded width and depth are investigated. In comparison with the sound absorption of a conventional barrier with a flat surface, it is found that the periodically folded barriers can achieve a higher sound absorption especially in the low frequency range.