Imagine three people huddled in a circle so when one speaks, only one other hears. Scientists have created a device that works like that, ensuring sound waves ripple in one direction only. The device, ...

Sound spreads both forwards and backward in a space, meaning someone standing nearby can hear you as well as you can hear ...

An unexpected breakthrough in sound wave management has been achieved. At ETH Zurich, researchers have discovered a way to guide sound waves in only one direction. In the ETH experiment, ...

When it comes to the sound-proofing of buildings, most people likely think of using materials that simply absorb the sound waves in a noisy room, so they can't proceed into a neighboring quiet room.