Q: Several dogs with unknown owners have been pooping and peeing on my front lawn. Is there some ultrasonic gadget that would keep them away? — Josh Swaney, Conyers ...

But a hackier way would be to build a parametric speaker that focuses soundwaves into a narrow beam like [Shane] did with this ultrasonic sound gun. As the directivity of a soundwave depends on ...

But after a couple of years of work, xMEMS has arrived at the next generation — ultrasound through a solid-state speaker.

Learn the key differences between ultrasonic vs. evaporative humidifiers to determine which is best for your home. Which is ...

While ultrasonic cleaning might sound a bit like the “sonic shower” from Star Trek, this is actually one case where the futuristic-sounding technology predates its use in Sci-Fi. Ultrasonic ...

An ultrasonic pest repeller is an electronic device that emits a high-pitched sound. Humans are unable to hear the high-pitched sound, but household pests can hear the noise and are either killed ...

It’s company’s first M&A deal since its founding in 2012. The startup has raised more than $55 million in that span.

THE experimental results reported in a previous communication 1 confirm the existence of several maxima for the second- and the third-order diffraction lines at oblique incidence and at low sound ...