Bats versus dolphins – the ultimate battle of sonar systems

Active sensors are incorporated into a number of technologies, such as meteorology devices and self-driving cars, and use the echo from sound, radio or light waves to locate objects. But despite nearly a century of development, ...

More objective than human hearing

In industrial production, the testing of machines and products by means of acoustic signals still takes a niche role. At the Hannover Messe 2017, Fraunhofer is exhibiting a cognitive system that detects erroneous sounds more ...

Tunable sound transmission shapes up

The ability to control fine-scale acoustic waves known as phonons could lead to new sensing and surgery technologies, or even materials that are invisible to sonar. This pursuit led researchers at King Abdullah University ...

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