Tag Archives: NoiseCanceling
Sony WH-1000XM3 headphones review: Goodbye, Bose
The best in-ear noise-cancelling headphones
Bell Labs doubles beams in fiber optic lines to reach 400Gbps on a global scale
It's comparatively easy to run fiber optic lines at high speeds; it's another matter to sustain that pace between continents. Alcatel-Lucent's Bell Labs has found a way to go that extreme distance by relying on the basic concept behind noise-cancelling headphones. When the researchers send data across two light beams in opposing phases, they can superimpose the signals and neutralize the distortion that would normally occur at long ranges. Such clean output lets Bell Labs ramp up the signal strength and maintain high speeds across whole oceans: its test pushed 400Gbps through 7,954 miles of fiber. There's no word on how soon we'll see twin-light technique put into practice, although we suspect that a networking giant like Alcatel-Lucent wants the extra bandwidth as quickly as possible.
[Image credit: JL Hopgood, Flickr]
Filed under: Networking, Alt
Source: Nature Photonics
Etymotic Music•Pro 9-15 earplugs bring high-end hush to audiences, lets us enjoy speed metal safely
Premium electronic earplugs usually find their homes with musicians eager to preserve their hearing at all costs; anyone within the crowd has more often been left to either use cruder plugs or cover their ears. Etymotic wants to bridge that difference with the Musico.Pro 9-15. The combination of ER-9 and ER-15 earplugs matches its namesake not just through the choice of components, but through active noise cancellation that removes 9 to 15 decibels from the sound only when the rock gets too raucous: listeners can hear fellow concert-goers and even boost their volume without skewing the sound of the band. Pricing plays its own part in reaching out to the crowd, too. As high as the new Musico.Pro set's $399 price might be compared to a typical pair of ear blockers, it's low enough that a dedicated fan of virtual Tupac can afford to go to the concert protected rather than voluntarily take on some hearing damage.
Filed under: Peripherals
Etymotic Music•Pro 9-15 earplugs bring high-end hush to audiences, lets us enjoy speed metal safely originally appeared on Engadget on Wed, 18 Jul 2012 01:13:00 EDT. Please see our terms for use of feeds.
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