An ultrasonic knife is a blade that vibrates a tiny amount at a high frequency, giving the knife edge minor superpowers. It gets used much like any other blade, but it becomes far easier to cut ...

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

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

Ultrasonic sounds are high-frequency sound waves that exceed 20,000 hertz, a range far beyond what the human ear can detect.

The team tested the tech in a room with echoes to show that it can function in the actual world, such as in classrooms, cars, ...

A new invention has proven that audio can successfully be transmitted directly to a listener's ears without being audible to others around.

The ultrasonic features and the clinical manifestations of the two groups were retrospectively analyzed, with an emphasis on the following parameters: onset age, gender (male/female) ratio ...

The ultrasonic technology enables 4-in-1 combined sensor operation. The instrument is suitable in binary gases for medical ventilators, assisting in the global pandemic that has resulted from the ...

It may someday be possible to listen to a favorite podcast or song without disturbing the people around you, even without ...

Researchers have created customized 'audio enclaves' that work like a virtual headset where only the listener can hear the ...