Humans have long admired the sound of birdsong, but to fully appreciate how technically amazing it is, you need an ultrasonic microphone. [Benn Jordan] recently created a video about using these ...

Kolkata: The city airport will now deploy sonic and ultrasonic sound waves to scare off birds in a bid to prevent aircraft bird strikes. In the past, the airport employed bird chasers and also burst ...

The mating calls of the katydid, a large insect, are ultrasonic, beyond the audible limit of human hearing. What if we could hear them? That’s the focus behind a collaboration between the abstract ...