Scientists discover hedgehogs hear ultrasound, opening the possibility of warning sounds that keep them away from roads.

Researchers have discovered that hedgehogs can hear ultrasound, a surprising ability that could help protect them from cars. Since road traffic kills large numbers of hedgehogs, scientists believe ...

Could ultrasonic hearing save hedgehogs from becoming roadkill? New research shows they can hear noise at frequencies as high as 85 kilohertz, raising the prospect of specially-designed sound ...

With the invention of the dynamic driver speaker celebrating 100 years, it’s an opportune moment to reflect on this widely recognized, coil-based transducer that delivers sound in almost all TWS ...

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 ...

Millions of hedgehogs die as they cross the roads, but a discovery is paving the way for a warning that might stop them crossing at dangerous times.

Conventional speakers work by moving air around to create sound, but tiny speakers that use ultrasonic frequencies to create pressure and generate sound opens some new doors, especially in terms of ...

Researchers at the University of Bristol have been able to levitate objects using ultrasonic waves larger than the wavelengths of sound used by the device. This could enable touchless control of drug ...

Ultrasonography is an incredibly useful tool in medicine, particularly in emergency departments. It usually takes under a minute for an ultrasonography tool to assess whether a critically injured ...