What do bats, dolphins, shrews, and whales have in common? Echolocation! Echolocation is the ability to use sound to navigate. Many animals, and even some humans, are able to use sounds in order to ...

Ultrasonic beams fired through a 3D-printed metasurface can create localized pockets of sound that are inaudible to ...

A company that is pioneering the use of earbud speakers that are manufactured like microchips says it has developed a way to convert inaudible, high-power ultrasound into hi-fi stereo sound, using a ...

Controlling sound has long been a staple of science fiction and fantasy. In Dune, the cone of silence allows characters to converse privately, even in open spaces. The eerie billboards of Blade Runner ...