Engineering

'PrivacyMic': For a smart speaker that doesn't eavesdrop

Microphones are perhaps the most common electronic sensor in the world, with an estimated 320 million listening for our commands in the world's smart speakers. The trouble is that they're capable of hearing everything else, ...

Consumer & Gadgets

The golden ear-a of audio

Audio stimulates our brains more powerfully than video, and slots neatly into our new patterns of voracious cultural consumption—making this a revolutionary time for aural entertainment.

Hi Tech & Innovation

Tape that: Dutch inventor of audio cassette dies at age 94

Lou Ottens, the Dutch inventor of the cassette tape, the medium of choice for millions of bedroom mix tapes, has died, said Philips, the company where he also helped develop the compact disc.

Automotive

Smarter traffic signs ahead?

Ever get caught up in a pileup or have a near miss with one during bad weather? Researchers in Poland have created smart road signs that use built-in Doppler radar, video, and acoustic radar and weather stations to monitor ...

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