Noise pollution has become a significant global problem in recent years. Unfortunately,
conventional acoustic materials cannot offer substantial improvements in noise reduction …

As sustainability is one of the main pillars in develo** future cities, adopting natural
ventilation whenever possible is one way to reduce energy consumption, thus indirectly …

Acoustic metamaterial represents the synergism between wave physics and designed
geometric structures, aimed at novel acoustic properties. For the important functionality of …

Ventilation barriers allowing simultaneous sound blocking and free airflow passage are a
great challenge but are necessary for particular scenarios calling for soundproofing …

Low-frequency noise is a growing problem in large structures of modern transportation
technologies. In this study, we report a large-scale acoustic panel made of double-layer …

We present a theoretical and experimental study of a ventilated metamaterial muffler
operating at a low-frequency range. The muffler combines two Helmholtz resonance cavities …