Smart speakers and other microphone-equipped devices aren't supposed to listen all the time, but there might be a solution if you aren't willing to take any chances. University of Chicago researchers ...

Operating at ultrasonic frequencies of up to 80 kHz, Knowles’ digital MEMS microphone assists smart phones and other consumer electronics with touchless gesture recognition, phone-to-phone data ...

Knowles is to manufacture a MEMS microphone supporting ultrasonic bandwidth starting in Q3. It allows the microphone to assist smartphones and consumer electronics with touch-less gesture recognition, ...

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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 ...

You can prevent facial recognition cameras from identifying you by wearing face paint, masks, or sometimes just a pair of oversized sunglasses. Keeping conversations private from an ever-growing ...

In yet another first for graphene, physicists from the University of California, Berkeley, have employed this versatile material to create ultra-thin, lightweight ultrasonic microphones and speakers ...

Sea mammals and bats use high-frequency sound for echolocation and communication, but humans didn’t have the technology to exploit that…until now. An ultrasonic microphone has been developed to help ...

A new privacy-busting technique that tracks consumers through the use of ultrasonic tones may have once sounded like the stuff of science fiction novels, but today it's reality. These near-silent ...