Acoustic metamaterials are a fast-evolving family of materials which manipulate sound waves in ever more advanced ways. Now, a team led by Changqing Xu at Nanjing Normal University in China has ...

Although movie and game producers can now create computer-animated images of just about anything, the sounds made by those onscreen items still typically consist of recordings of real-world objects.

Sound is a wave which is made up of vibrations in the air. It is caused by the movement of energy travelling through a medium as it propagates away from the source of the sound. Since sound wave ...