The range of materials that concrete contains, such as stone, chalk, and sand, scatters normal sound waves, making clear ...

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 ...

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 ...

Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...

A recently-released Sony patent is apparently wanting to take haptic feedback in sound to the next level. The patent, which is supposedly for a “mid-air ultrasonic haptic interface”, appears to be ...

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 ...

Ultrasonic waves can help clean items around your home, but which products are best? Here are 12 types of tools that leverage the technology.

Scientists in Finland transmitted electricity through air using sound waves, lasers, and radio frequencies, creating “acoustic wires” that could revolutionize homes, industry and IoT devices without ...

Apple could use ultrasonic sound waves to deliver haptic feedback to wearers of its upcoming AR/VR headset when they interact with virtual objects. Most consumer AR/VR headsets do not provide haptic ...

Forbes contributors publish independent expert analyses and insights. I'm a journalist covering emerging tech and its effects on society. In other words, despite living in a “connected world,” we're ...