[Jason] has continued to plug along with his sonar build and recently showed up a monostatic active sonar using a piezo element and microphone. Regular readers will remember [Jason’s ...

While a well-known use of this is sonar, ultrasonic sensors can also be put to use to make a radar-like system. This ultrasonic radar project is from [mircemk] who uses a small ultrasonic distance ...

This reflection produces pulse B on the CRO. The reflection of a sound wave is called an echo. Pulse A is 9 squares across the screen. Each square represents 40 microseconds or 40 μs. 9 squares = ...

Different species of animal have different hearing ranges. This explains why a dog can hear the ultrasound produced by a dog whistle, but humans cannot. A builder uses an ultrasonic device to ...

As geopolitical tensions between Moscow and Washington continue to rise, Russian submarine experts have recently claimed that ...

If you buy something through links on our site, Mashable may earn an affiliate commission. To Echo or to Echo Dot? Credit: Amazon / Mashable composite Deal pricing and availability subject to ...

The Echo Show 15 is Amazon's largest Echo Show yet, and is designed to be easily mounted on a wall. It features a 15.6-inch, 1080p LCD surrounded by a large, picture-frame-like bezel that can look ...

Sonar in FragPunk is another recon agent who specializes in collecting information and allows you to hide your footsteps.

Police searching for missing mother Victoria Taylor have found a body in the River Derwent, close to where she was last seen.

Today’s smart speakers owe a lot to the original Amazon Echo, so every new flagship Echo model is anticipated by industry watchers — it tends to set the bar for whatever follows. The 4th gen ...

To whales that hunt with soundwaves in lightless ocean depths, a torn plastic party balloon and a delicious squid may appear ...

Police searching for missing mother Victoria Taylor have found a body in the River Derwent, close to where she was last seen. Ms Taylor, 34, disappeared from her home in Malton, North Yorkshire, on ...