DEMO Spring: Keeping Track of Your Gizmos with Bluetooth

The "Phone Halo" makes sure you never lose anything again

1 min read
DEMO Spring: Keeping Track of Your Gizmos with Bluetooth

At first, I wasn't impressed. Oh, whoopee, this gizmo is going to buzz me when I walk out the door without my keys. Then the folks at Phone Halo happened to mention that if you keep going, it will go on to text you to tell you where you left your keys, post it on your facebook page, and twitter it out to all your friends. Finally, a good use of social media. (Of course, if you left them in a place you shouldn't have been in the first places—maybe not so good.)

[youtube expand=1]
The Conversation (0)

Deep Learning Could Bring the Concert Experience Home

The century-old quest for truly realistic sound production is finally paying off

12 min read
Image containing multiple aspects such as instruments and left and right open hands.
Stuart Bradford

Now that recorded sound has become ubiquitous, we hardly think about it. From our smartphones, smart speakers, TVs, radios, disc players, and car sound systems, it’s an enduring and enjoyable presence in our lives. In 2017, a survey by the polling firm Nielsen suggested that some 90 percent of the U.S. population listens to music regularly and that, on average, they do so 32 hours per week.

Behind this free-flowing pleasure are enormous industries applying technology to the long-standing goal of reproducing sound with the greatest possible realism. From Edison’s phonograph and the horn speakers of the 1880s, successive generations of engineers in pursuit of this ideal invented and exploited countless technologies: triode vacuum tubes, dynamic loudspeakers, magnetic phonograph cartridges, solid-state amplifier circuits in scores of different topologies, electrostatic speakers, optical discs, stereo, and surround sound. And over the past five decades, digital technologies, like audio compression and streaming, have transformed the music industry.

Keep Reading ↓Show less