At the recent Hacker Hotel conference in the Netherlands, she presented an ultrasonic parametric speaker. It projects an extremely narrow beam of sound over a significant distance, but it’s not ...

At the recent Hacker Hotel conference in the Netherlands, she presented an ultrasonic parametric speaker. It projects an extremely narrow beam of sound over a significant distance, but it’s not ...

T iny MEMS ultrasonic drivers have already made a huge difference in sound quality for true wireless earbuds. Now, the company behind those "sound from ultrasound" speakers, xMEMS Labs, is taking ...

Used for marketing or instructional purposes when someone walks by, parametric speakers use ultrasonic frequencies, which are extremely directional but are beyond human hearing. Whereas a typical ...