Could rats possess a power that seems ripped from science fiction? Researchers from Harvard University and the University at ...

Ever wonder what a dog whistle actually sounds like to animals?In this video I use a special microphone, the Sanken CO-100k that can record frequencies up to 100 kHz, way higher than typical ...

Some frogs scream so high that humans can't hear it. Lots of frogs around the ... in the Brazilian Atlantic Forest that can scream at an ultrasonic level. Researchers saw small leaf litter frogs ...

The sound is, as the name implies, ultrasonic — so outside the range of human hearing — but strong enough so that the small, light objects can be positioned and held fixed in mid-air where ...

Ultrasonic sound is a vibration at a frequency above the range of human hearing, usually greater than 20 kHz. Unlike other types of position sensors, ultrasonic linear position sensors and switches ...

Apple and Google could be hijacked by ultrasonic audio commands that humans cannot hear, research suggests. Two teams said the assistants responded to commands broadcast at high frequencies that ...