Metamaterials researchers have created a thin plastic structure with geometric details allowing it to control the redirection and reflection of sound waves with almost perfect efficiency.

If your work involves recording live audio, acoustic foam is one of the simplest and most effective ways to improve your sound. An unfitted room cluttered with hard surfaces – walls, floors, desks, ...

The interface between two facets of an artificial material known as a “Weyl phononic crystal” can not only negatively refract an airborne sound wave, it does so without reflecting it at all. This ...