New audio tech uses ultrasound to create isolated pockets of sound, enabling private listening without headphones.

Sound waves travel through particles ... What is an insulator? · How does sound travel? · How can we stop or reduce the volume of sound traveling? After watching this short film, you could ...

Researchers at ETH Zurich have managed to make sound waves travel only in one direction ... "backwards" through the first waveguide, but can do so through the third waveguide.

Discuss the concept of sound with the children ... each activity ask them were they surprised with the results and how do they think it worked.

Jiaxin Zhong does not work for ... we designed ultrasonic beams that can bend on their own. Normally, sound waves travel in straight lines unless something blocks or reflects them.

Directing sound to a specific location is difficult because of how sound waves behave. As vibrations move through the air, ...