Musical brains smash audio algorithm limits



































The mystery of how our brains perceive sound has deepened, now that musicians have smashed a limit on sound perception imposed by a famous algorithm. On the upside this means it should be possible to improve upon today's gold-standard methods for audio perception.











Devised over 200 years ago, the Fourier transform is a mathematical process that splits a sound wave into its individual frequencies. It is the most common method for digitising analogue signals and some had thought that brains make use of the same algorithm when turning the cacophony of noise around us into individual sounds and voices.













To investigate, Jacob Oppenheim and Marcelo Magnasco of Rockefeller University in New York turned to the Gabor limit, a part of the Fourier transform's mathematics that makes the determination of pitch and timing a trade-off. Rather like the uncertainty principle of quantum mechanics, the Gabor limit states you can't accurately determine a sound's frequency and its duration at the same time.











13 times better













The pair reasoned that if people's hearing obeyed the Gabor limit, this would be a sign that they were using the Fourier transform. But when 12 musicians, some instrumentalists, some conductors, took a series of tests, such as judging slight changes in the pitch and duration of sounds at the same time, they beat the limit by up to a factor of 13. This shows that the Fourier transform is not the whole story, says Magnasco.












"The actual algorithm employed by our brains is still shrouded in mystery."












Brian Moore of the University of Cambridge says he is not surprised that the musicians beat the limit: he already assumed that other mechanisms were at work.












Understanding human sound perception could inspire better systems for sound recordings, speech recognition and sonar.












Journal reference: Physical Review Letters, doi.org/kdw




















































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Thousands of Indonesian workers protest for better conditions






JAKARTA : In Indonesia, thousands of workers took to the streets in five major cities including the nation's capital Jakarta on Wednesday.

Those in Jakarta, who were mostly from the Federation of Metal Workers' Union, made several demands including having universal healthcare and their right to protest.

They are demanding that President Susilo Bambang Yudhoyono issue a presidential decree that would lead to universal health insurance for all Indonesians by 2019.

This health insurance programme has been approved and will start as of 2014 but the Presidential decree required has yet to be issued.

Said Iqbal, President, Federation of Indonesian Metal Workers' Union, said: "If a government regulation and Presidential decree, which was supposed to be issued last November, is not introduced then steps for universal healthcare cannot begin. That's why the government is obliged to introduce the necessary regulations by late February, which includes guaranteeing that employers pay for their workers' insurance premium fees and that the poor will be able to receive government's healthcare."

One of the other demands made is a guarantee for a pension fund for labour workers from 2015

The workers are also calling for the provincial government to raise the number of components in the reasonable cost index from around 60 to 80 components.

This index is used as a benchmark to determine minimum wage increases for next year.

The workers are also objecting to two bills on national security and social organisation being deliberated in Parliament

They claim that if these two bills are passed then it will curb their right to protest in the streets citing security reasons.

If their demands are not met, the next major rally will be on 26 February by the Indonesian Labour Workers Association, the biggest labour union in Indonesia.

The union has warned that if its demands are not met by the end of April, then there will be an all out labour rally across the nation on Labour Day, 1st May.

- CNA/ch



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Amateur effort finds new largest prime number




A tiny portion of the 48th Mersenne prime, a number more than 17 million digits long. Written as text, the entire number is a 22.5MB file.

A tiny portion of the 48th Mersenne prime, a number more than 17 million digits long. Written as text, the entire number is a 22.5MB file.



(Credit:
illustration by Stephen Shankland/CNET)



The Great Internet Mersenne Prime Search (GIMPS) project has scored its 14th consecutive victory, discovering the largest prime number so far.


The number, 2 to the power of 57,885,161 minus 1, is a digit that's 17,425,170 digits long. That's big enough that if you want to see the full text, you'll have to brace yourself for a 22.5MB download.


GIMPS, a cooperative project splitting the search across thousands of independent computers, announced the find yesterday after it had been confirmed by other checks. At present, there are 98,980 people and 574 teams involved in the GIMPS project; their 730,562 processors perform about 129 trillion calculations per second.




The project has a lock on the market for mongo new prime numbers. The discoverer of this particular prime is Curtis Cooper, a professor at the University of Central Missouri who runs the prime-hunting software on a network of computers and who's found record primes in 2005 and 2006. It's not just his effort that's important, though; it relied also on others' machines ruling out other candidates.


A prime number is divisible only by itself and the number 1. Once a mathematical curiosity, primes now are crucial to encrypted communications. Mersenne primes are named after Marin Mersenne, a French monk born in 1588 who investigated a particular type of prime number: 2 to the power of "p" minus one, in which "p" is an ordinary prime number.


Cooper's find is the 48th Mersenne prime so far discovered. GIMPS has found the 14 largest Mersenne primes, the organization said.


Discovering Mersenne primes is not a get-rich-quick scheme, though Cooper won a $3,000 prize. It could be more lucrative at some point: An Electronic Frontier Foundation award of $150,000 will go to the discoverer of the first prime number with at least 100 million digits. It's already awarded prizes for primes 1-million and 10-million digits, and it's got a $250,000 prize queued up for a billion-digit prime.


GIMPS is steadily advancing on the bigger numbers.


In 1998, the project found 2^3021377-1, a number 909,526 digits long. By 2001, GIMPS found the 39th Mersenne prime, a number 4,053,946 digits long. The 43rd Mersenne prime, which Cooper's effort found, is a 9,152,052-digit numeral.


Searching for prime numbers is a project that can easily be split across countless computers through an idea called distributed computing. Not all computing chores are so amenable to cooperation, though.


Some of those labors, such fluid dynamics research that can be used to model nuclear weapons explosions or
car aerodynamics, can be run on closely independent computing nodes connected by a high-speed network.


Other computing chores can't be broken down into parallel tasks at all, a problem given that power-consumption limits stalled processor clock speed increases in recent years.


A computer-science idea called Amdahl's Law, named after mainframe computer designer Gene Amdahl, shows the limits of parallel computation. If some portion of a computer program can't be sped up by parallel processing, at a certain point throwing more processors at the problem will stop producing any speedup in the computation.


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The Real Richard III


It's a question that actors from Laurence Olivier to Kevin Spacey have grappled with: What did Richard III, the villainous protagonist of Shakespeare's famous historical drama, really look and sound like?

In the wake of this week's announcement by the University of Leicester that archaeologists have discovered the 15th-century British king's lost skeleton beneath a parking lot, news continues to unfold that helps flesh out the real Richard III.

The Richard III Society unveiled a 3D reconstruction today of the late king's head and shoulders, based on computer analysis of his skull combined with an artist's interpretation of details from historical portraits. (Related: "Shakespeare's Coined Words Now Common Currency.")

"We received the skull data before DNA analysis confirmed that the remains were Richard III, and we treated it like a forensic case," said Caroline Wilkinson, the University of Dundee facial anthropologist who led the reconstruction project. "We were very pleasantly surprised by the results."

Though Shakespeare describes the king as an "elvish-marked, abortive, rooting hog," the reconstructed Richard has a pleasant, almost feminine face, with youthful skin and thoughtful eyes. His right shoulder is slightly higher than the left, a consequence of scoliosis, but the difference is barely visible, said Wilkinson.

"I think the whole Shakespearean view of him as being sort of monster-like was based more on his personality than his physical features," she reflected.

Look back at 125 years of National Geographic history

People are naturally fascinated by faces, especially of historical figures, said Wilkinson, who has also worked on reconstructions of J.S. Bach, the real Saint Nicholas, the poet Robert Burns, and Cleopatra's sister.

"We make judgments about people all the time from looking at their appearance," she said. "In Richard's case, up to now his image has been quite negative. This offers a new context for considering him from the point of view of his anatomical structure rather than his actions. He had quite an interesting face."

A Voice From the Past

Most people's impression of Richard's personality comes from Shakespeare's play, in which the maligned ruler utters such memorable lines as "Now is the winter of our discontent/Made glorious summer by this son of York," and "A horse! A horse! My kingdom for a horse!"

But how would the real Richard III have expressed himself? Did he have an accent? Was there any sense of personality or passion in his choice of words?

To find out more about the mysterious monarch, Philip Shaw, a historical linguist at University of Leicester's School of English, analyzed the only two known examples of Richard III's own writing. Both are postscripts on letters otherwise composed by secretaries—one in 1469, before Richard became king, and one from 1483, the first year of his brief reign.

Shaw identified a quirk of spelling that suggests that Richard may have spent time in the West Midlands, or perhaps had a tutor who hailed from there.

"I was looking to compare the way he spells things with the way his secretaries spell things, working on the assumption that he would have been schooled to a fairly high level," Shaw explained.

Read about National Geographic explorers on our Explorers Journal blog

In the 1469 letter, Richard spells the word "will" as "wule," a variation associated with the West Midlands. But Shaw also notes that by 1483, when Richard wrote the second letter's postscript, he had changed his spelling to the more standard "wyll" (the letters 'i' and 'y' were largely interchangeable during that period of Middle English).

"That could suggest something about him brushing up over the years, or moving toward what would have been the educated standard," Shaw said, noting that the handwriting in the second example also appears a bit more polished. "One wonders what sort of practice and teaching he'd had in the interim."

Although it's hard to infer tone of voice from written letters, there is certainly emotion in the words penned by Richard III.

In the 1469 letter, the 17-year-old seeks a loan of 100 pounds from the king's undertreasurer. Although the request is clearly stated in the body of the letter, Richard adds an urgent P.S.: "I pray you that you fail me not now at this time in my great need, as you will that I show you my good lordship in that matter that you labour to me for."

That could either be a veiled threat (If you don't lend me the money, I won't do that thing you asked me to do) or friendly cajoling (Come on, I'm helping you out with something, so help me out with this loan).

"His decision to take the pen himself shows you how important that personal touch must have been in getting people to do something," Shaw said.

The second letter, written to King Richard's chancellor in 1483, also conveys a sense of urgency. He had just learned that the Duke of Buckingham—once a close ally—was leading a rebellion against him.

"He's asking for his Great Seal to be sent to him so that he can use it to give out orders to suppress the rebellion," Shaw said. "He calls the Duke 'the most untrue creature living. You get a sense of how personally let down and betrayed he feels."

Shaw said he hopes his analysis—in combination with the new facial reconstruction—will help humanize Richard III.

"He probably wasn't quite the villain that Shakespeare portrays, though I suspect he was quite ruthless," he said. "But you probably couldn't afford to be a very nice man if you wanted to survive as a king in those days."


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Lance Armstrong Under Criminal Investigation













Federal investigators are in the midst of an active criminal investigation of disgraced former Tour de France champion Lance Armstrong, ABC News has learned.


The revelation comes in stark contrast to statements made by the U.S. Attorney for Southern California, Andre Birotte, who addressed his own criminal inquiry of Armstrong for the first time publicly on Tuesday. Birotte's office spent nearly two years investigating Armstrong for crimes reportedly including drug distribution, fraud and conspiracy -- only to suddenly drop the case on the Friday before the Super Bowl last year.


Sources at the time said that agents had recommended an indictment and could not understand why the case was suddenly dropped.


Today, a high level source told ABC News, "Birotte does not speak for the federal government as a whole."


According to the source, who agreed to speak on the condition that his name and position were not used because of the sensitivity of the matter, "Agents are actively investigating Armstrong for obstruction, witness tampering and intimidation."


An email to an attorney for Armstrong was not immediately returned.


READ MORE: Lance Armstrong May Have Lied to Winfrey: Investigators






AP Photo/Bas Czerwinski, File











Lance Armstrong Shows His Emotional Side With Oprah Winfrey Watch Video









Cyclist Lance Armstrong: Bombshell Confession Watch Video









Lance Armstrong-Winfrey Interview: Doping Confession Watch Video





Earlier Tuesday, during a Department of Justice news conference on another matter, Birotte was confronted with the Armstrong question unexpectedly. The following is a transcript of that exchange:


Q: Mr. Birotte, given the confession of Lance Armstrong to all the things --


Birotte: (Off mic.)


Q: -- to all thethings that you, in the end, decided you couldn't bring a case about, can you give us your thoughts on that case now and whether you might take another look at it?


Birotte: We made a decision on that case, I believe, a little over a year ago. Obviously we've been well-aware of the statements that have been made by Mr. Armstrong and other media reports. That has not changed my view at this time. Obviously, we'll consider, we'll continue to look at the situation, but that hasn't changed our view as I stand here today.


The source said that Birotte is not in the loop on the current criminal inquiry, which is being run out of another office.


Armstrong confessed to lying and using performance-enhancing drugs throughout his career in an interview with Oprah Winfrey.


READ MORE: Armstrong Admits to Doping


WATCH: Armstrong's Many Denials Caught on Tape


READ MORE: 10 Scandalous Public Confessions


Investigators are not concerned with the drug use, but Armstrong's behavior in trying to maintain his secret by allegedly threatening and interfering with potential witnesses.


Armstrong is currently serving a lifetime ban in sport handed down by the U.S. Anti-Doping Agency. He has been given a Feb. 6 deadline to tell all under oath to investigators or lose his last chance at a possible break on the lifetime ban.


PHOTOS: Olympic Doping Scandals: Past and Present


PHOTOS: Tour de France 2012



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Sleep: What are dreams?


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Password must contain only letters and numbers, and be at least 8 characters






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Ahmadinejad starts historic Egypt visit






CAIRO: Mahmoud Ahmadinejad arrived in Cairo on Tuesday, marking the first visit to Egypt by an Iranian president since Iran's 1979 Islamic revolution, Egyptian television footage showed.

Egypt's Islamist President Mohamed Morsi welcomed Ahmadinejad at Cairo airport as he disembarked from the plane, the footage showed.

Ahmadinejad, who is on a three-day visit, will attend an Organisation of Islamic Cooperation conference in Cairo and will hold talks with Egyptian officials, Iranian media said ahead of the trip.

Before leaving Tehran, Ahmadinejad told reporters that during his visit he would work towards strengthening bilateral ties with Cairo.

"I will try to pave the ground for developing cooperation between Iran and Egypt," Ahmadinejad was quoted as saying by Iran's official IRNA news agency.

Without elaborating, he said the visit would "definitely influence the bilateral ties" between Tehran and Cairo.

Tehran severed ties with Cairo in 1980 in protest at a peace agreement between Egypt and Israel by then Egyptian president Anwar Sadat.

But Egypt has responded cautiously to Iranian efforts to revive ties since Morsi took power in 2012, with the two nations adopting opposing positions on the Syrian conflict.

Iran supports the regime of Syrian President Bashar al-Assad, while Egypt has been a leading voice in urging his departure -- along with regional heavyweights Saudi Arabia, Turkey and Qatar.

"If Tehran and Cairo see more eye to eye on regional and international issues, many (issues) will change," IRNA quoted Ahmadinejad as saying.

- AFP/fa



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Watch as Vine becomes the next great newsgathering tool



A Vine showing police officers patrolling San Francisco on Super Bowl Sunday evening.



(Credit:
Screen shot by CNET)



What if the Arab Spring, or Hurricane Sandy had been Vined?


Much has been made over the years about how Twitter is one of the world's most important new tools for reporting breaking news. But with the launch of Vine, has Twitter now expanded its control over citizen journalism to video?


Until now, most of the conversation about Vine has been around the service's ability to capture life's quirky moments, or as a way to create interesting (and sometimes artistic) stop-motion video. And of course, everyone knows that there's plenty of porn to be found.


Today, I encountered my first use of Vine as a newsgathering tool -- a video of a fire breaking out in a San Francisco neighborhood -- and it struck me immediately that this is one future for Vine I hadn't yet heard people discussing, although as Wired points out, there have been cases of people using Vine to to document a broken water main and a broken-down San Francisco subway.


The possibilities are staggering. Since Vine is so easy to use -- especially if you're just shooting an uninterrupted six-second video -- there are millions of people who, while witnessing some sort of breaking news or notable situation, could pull out their smart phone, run the app, and quickly shoot and post a video. For now, Vine is only available for iPhone and
iPod Touch, but Twitter wil surely release an
Android version before too long, as well as versions for Windows Phones, and perhaps other platforms. And that will just expand Vine's potential reach, although Twitter has yet to release any download or usage numbers.



That means highway accidents, police misconduct, fires, protests, fights, and just about anything is fair game for anyone to post to Vine and disseminate via social networks like Twitter and Facebook. For the citizen journalist -- or professional reporter -- having the ability to so easily post a video of some kind of newsworthy situation is a potentially invaluable tool. And for professional news organizations, access to such videos could be priceless.


Other short-form video services

Of course, Vine is hardly the only video app available. Others, such as Tout, Cinemagram, and YouTube, have for some time made shooting and sharing such videos fairly simple. YouTube told CNET that 7,000 hours of news-related video are uploaded every day, and more than 350,000 news- or politics-oriented videos were uploaded from Syria in 2012. For its part, Tout has been used to varying degrees by quite a few news organizations, including "The Wall Street Journal," NBC-TV, Sky, and many others, including CNET.


But it would seem that if Vine takes off, its ease of use, and ties to Twitter, could make it the tool of choice for posting -- and perhaps most importantly, instantly sharing -- quick video tidbits of what's happening out in the world.


"The next Zapruder film could come from Vine," said Steve Rubel, an executive vice president and media analyst for Edelman. "That's an interesting concept, and we don't know what's going to happen until there's an event like that. But like the Arab Spring demonstrated the power of Twitter [for disseminating newsworthy photos], there will be something that comes along, something that's momentous and goes on for a period of time and affects many people. [Hurricane] Sandy would be a perfect example."


To Rubel, what sets Vine apart from other short-form video tools is its ties to Twitter and how high-profile Vine has already become. And whether or not Twitter intended Vine to be used this way, the video app fits right into Twitter being "such a watercooler for what's current in news and culture," Rubel said.


Others clearly agree.


"Think of the impact Twitter has made so far on real-time reporting -- making everyone, everywhere, a potential instant eyewitness who can share text or a photo with the world," wrote Jeff Sonderman for Poynter when Vine was launched last month. "Now think of how that effect is amplified when the public can easily start sharing videos of the same events. For one, videos have the potential to be more realistic or graphic than a still photo. That's good when you want to bring the world virtually closer to a news event."


Is it a good thing?

But in his article, Sonderman also raised concerns about whether this kind of citizen journalism is a good thing, asking whether video documentation of events like last August's Empire State Building shooting would have been too much for many to take.


Sonderman also wonders if there are ethical questions raised about tools like Vine about how and when is appropriate to use such tools in news reporting.


"At the same time, [Vine] gives journalists fewer options for balancing ethical concerns," Sonderman wrote. "For instance, with a news photo you can quickly crop or blur specific areas the public shouldn't see. When dealing with a video, that's much harder to do."


To be sure, it's very early days, and until today, I hadn't seen a single instance of Vine being used in anything resembling a newsgathering capacity. But everything has to start somewhere. So did Twitter envision this use for Vine when it acquired the video service last fall? It's hard to say, and Twitter did not respond to a request for comment for this story.


But given how important Twitter has become during any kind of news event, it's hard to imagine the company didn't see the citizen journalism potential of Vine, even if until now, that's an angle that has hardly been talked about, either by the company, or in the larger conversation about the tool and its utility.


"There will be a Zapruder film moment," said Rubel, "or one like the Miracle on the Hudson, which put TwitPic on the map, and made people say, shoot, Twitter is for photos. There will be something, some sort of newsworthy moment, and that [Vine] will become the iconic image" of the event.


There's a plane in the Hudson. I'm on the ferry going to pick... on Twitpic


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Space Pictures This Week: A Space Monkey, Printing a Moon Base

Illustration courtesy Foster and Partners/ESA

The European Space Agency (ESA) announced January 31 that it is looking into building a moon base (pictured in an artist's conception) using a technique called 3-D printing.

It probably won't be as easy as whipping out a printer, hooking it to a computer, and pressing "print," but using lunar soils as the basis for actual building blocks could be a possibility.

"Terrestrial 3-D printing technology has produced entire structures," said Laurent Pambaguian, head of the project for ESA, in a statement.

On Earth, 3-D printing, also known as additive manufacturing, produces a three-dimensional object from a digital file. The computer takes cross-sectional slices of the structure to be printed and sends it to the 3-D printer. The printer bonds liquid or powder materials in the shape of each slice, gradually building up the structure. (Watch how future astronauts could print tools in space.)

The ESA and its industrial partners have already manufactured a 1.7 ton (1.5 tonne) honeycombed building block to demonstrate what future construction materials would look like.

Jane J. Lee

Published February 4, 2013

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Boy Rescued in Ala. Standoff 'Laughing, Joking'













The 5-year-old boy held hostage in a nearly week-long standoff in Alabama is in good spirits and apparently unharmed after being reunited with his family at a hospital, according to his family and law enforcement officials.


The boy, identified only as Ethan, was rescued by the FBI Monday afternoon after they rushed the underground bunker where suspect Jimmy Lee Dykes, 65, was holding him. Dykes was killed in the raid and the boy was taken away from the bunker in an ambulance.


Who Is Jimmy Lee Dykes?


Officials have not yet provided any further details on the raid, citing the ongoing investigation.


"I've been to the hospital," FBI Special Agent Steve Richardson told reporters Monday night. "I visited with Ethan. He is doing fine. He's laughing, joking, playing, eating, the things that you would expect a normal 5- to 6-year-old young man to do. He's very brave, he's very lucky, and the success story is that he's out safe and doing great."


Ethan is expected to be released from the hospital later today and head home where he will be greeted by birthday cards from his friends at school. Ethan will celebrate his 6th birthday Wednesday.








Alabama Hostage Standoff: Jimmy Lee Dykes Dead Watch Video











Alabama Hostage Crisis: Boy Held Captive for 7 Days Watch Video





Officials were able to insert a high-tech camera into the 6-by-8-foot bunker to monitor Dykes' movements, and they became increasingly concerned that he might act out, a law enforcement source with direct knowledge told ABC News Monday. FBI special agents were positioned near the entrance of the bunker and used an explosive charge to gain access and neutralize Dykes.


"Within the past 24 hours, negotiations deteriorated and Mr. Dykes was observed holding a gun," the FBI's Richardson said. "At this point, the FBI agents, fearing the child was in imminent danger, entered the bunker and rescued the child."


Richardson said it "got tough to negotiate and communicate" with Dykes, but declined to give any specifics.


After the raid was complete, FBI bomb technicians checked the property for improvised explosive devices, the FBI said in a written statement Monday afternoon.


The FBI had created a mock bunker near the site and had been using it to train agents for different scenarios to get Ethan out, sources told ABC News.


Former FBI special agent and ABC News consultant Brad Garrett said rescue operators in this case had a delicate balance.


"You have to take into consideration if you're going to go in that room and go after Mr. Dykes, you have to be extremely careful because any sort of device you might use against him, could obviously harm Ethan because he's right there," he said.


Still, Monday's raid was not the ending police had sought as they spent days negotiating with the decorated Vietnam veteran through a ventilation shaft. The plastic PVC pipe was also used to send the child comfort items, including a red Hot Wheels car, coloring books, cheese crackers, potato chips and medicine.


State Sen. Harri Anne Smith said Ethan's mother asked police a few days ago not to kill Dykes.


"She put her hand on the officer's heart and said, 'Sir, don't hurt him. He's sick,'" Smith said Monday.


Taylor Hodges, pastor of the Midland City Baptist Church, said, "Many people here don't keep their doors locked. Things are going to change, especially for our school system."


The outcome of the situation drew praise from the White House.






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