In these environments, users can turn their heads, move around, and hear sounds from different directions—just like in the ...

Sound traveling through the feeder waveguide traveled in the forward direction and left through a second waveguide, but not the third. In normal circumstances, the waves would have propagated in ...

Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.

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, ...