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Servers hated Mondays until techie quit quaffing coffee in their company

3 months 1 week ago
Unix boxes needed a hotfix to survive early morning cold boots

On Call  Mornings are hard, and Friday mornings doubly so. Which is why The Register gives readers a little kick along on the last day of the working week in the form of a new installment of On Call, the reader-contributed column that tells your tales of tech support treachery and triumph.…

Simon Sharwood

Researchers Develop a Low-Cost Visual Microphone

3 months 1 week ago
alternative_right shares a report from Phys.org: Researchers have created a microphone that listens with light instead of sound. Unlike traditional microphones, this visual microphone captures tiny vibrations on the surfaces of objects caused by sound waves and turns them into audible signals. In the journal Optics Express, the researchers describe the new approach, which applies single-pixel imaging to sound detection for the first time. Using an optical setup without any expensive components, they demonstrate that the technique can recover sound by using the vibrations on the surfaces of everyday objects such as leaves and pieces of paper. [...] To demonstrate the new visual microphone, the researchers tested its ability to reconstruct Chinese and English pronunciations of numbers as well as a segment from Beethoven's Fur Elise. They used a paper card and a leaf as vibration targets, placing them 0.5 meters away from the objects while a nearby speaker played the audio. The system was able to successfully reconstruct clear and intelligible audio, with the paper card producing better results than the leaf. Low-frequency sounds (1 kHz) showed slight distortion that improved when a signal processing filter was applied. Tests of the system's data rate showed it produced 4 MB/s, a rate sufficiently low to minimize storage demands and allow for long-term recording. "Currently, this technology still only exists in the laboratory and can be used in special scenarios where traditional microphones fail to work," said research team leader Xu-Ri Yao from Beijing Institute of Technology in China. "We aim to expand the system into other vibration measurement applications, including human pulse and heart rate detection, leveraging its multifunctional information sensing capabilities."

Read more of this story at Slashdot.

BeauHD

Error'd: Monkey Business

3 months 1 week ago

If monkeys aren't your bag, Manuel H. is down to clown. "If anyone wants to know the address of that circus - it's written right there. Too bad that it's only useful if you happen to be in the same local subnet..." Or on the same block.

 

"Where's my pension?" paniced Stewart , explaining "I logged on to check my Aegon pension to banish the Monday blues and my mood only worsened!"

 

After last week's episode, BJH is keeping a weather eye out for freak freezes. "The Weather.com app has something for everyone. Simple forecasts almost anyone can understand, and technical jargon for the geeks."

 

"It costs too much to keep a salmon on the road," complains Yitzchok Nolastname . I agree this result looks fishy.

 

"At Vanity Fair, brevity is the soul of wit," notes jeffphi . Always has been.

 

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Lyle Seaman