可实现宽频宽角度隔声的薄层通风结构

林远鹏,梁彬,杨京,程建春

Thin ventilated layer for broadband and wide⁃angle sound insulation

Yuanpeng Lin,Bin Liang,Jing Yang,Jianchun Cheng

图4 平面波在(a) 0°，(b) 30°和(c) 60°入射时的声压场分布图，点声源入射时在全透射点(d) 2570 Hz与全反射点(e) 2730 Hz的声压场分布图

Fig.4 The simulated acoustic pressure distributions caused by the proposed structure when illuminated by a plane wave with incident angles: (a) 0°，(b) 30° and (c) 60°，(d) spatial distribution of acoustic pressure when the proposed acoustic barrier is impinged by a point source driven by two particular frequencies of 2570 Hz and 2730 Hz where the transmission peak and dip occur，respectively