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Comment Meaningless Specifications (Score 1) 450

by The Mainframe (#35295992) Attached to: Apple in Talks to Improve Sound Quality of Music Downloads
The bit depth (read: word length) of an audio file defines its dynamic range. CDs are 16 bit, which is 96dB of dynamic range, minus a little dithering at the bottom end. 24 bit would get you 144dB, which is unusable in any audio system. Even 96dB of dynamic range is barely achievable with extremely low noise electronics in very well sound proofed rooms. This is almost certainly a moot point given that most modern recordings have about an 8dB crest (peak to average) factor.
Increasing the sample rate a little is probably a good step, but again modern AD/DA converters deal with this quite well. Properly reconstructed (read: oversampled) there should be no difference to our ears (which can barely hear past 18kHz) from an increased sample rate, and there is a much greater burden on the processing hardware. File size will also go up.
The real issue is that neither of these specifications defines audio quality. iTunes Plus did increase audio quality by doubling the bitrate of the AAC codec. I cannot hear the difference between CD and 256AAC. If I can't hear it it's unlikely than almost anyone can.
Image

Dead Parrot Sketch Is 1,600 Years Old 276

Posted by samzenpus from the he-prefers-kipping-on-his-back dept.
laejoh writes "Monty Python's 'Dead Parrot sketch' — which featured John Cleese — is some 1,600 years old. A classic scholar has proved the point, by unearthing a Greek version of the world-famous piece. A comedy duo called Hierocles and Philagrius told the original version, only rather than a parrot they used a slave. It concerns a man who complains to his friend that he was sold a slave who dies in his service. His companion replies: 'When he was with me, he never did any such thing!' The joke was discovered in a collection of 265 jokes called Philogelos: The Laugh Addict, which dates from the fourth century AD. Hierocles had gone to meet his maker, and Philagrius had certainly ceased to be, long before John Cleese and Michael Palin reinvented the yarn in 1969."
Image

Bottom of the Barrel Book Reviews — Special Operations Team Raptor 85

Posted by samzenpus from the could-be-worse dept.
If you like stories about maverick billionaires, cliche mercenaries, government sponsored super hero teams, leading edge technology and the ultimate evil of an alien human resources dept. then Special Operations Team Raptor The African Incident, by Daniel A. Dawson, just might be for you. Weighing in at a mere 103 pages, SOTR will only waste a few hours of your life. While it may be as fresh and creative as a crafts class at summer camp, it's not a complete waste of your time. Keep reading below to see if your mom would like it as much as your macaroni art.
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Slashdot's Disagree Mail 354

Posted by samzenpus from the teach-me-something dept.
There is an old Japanese proverb that goes, "Better than a thousand days of diligent study is one day with a great teacher." This week's mail is all about teaching. Whether it is about the seriousness of psychic ability, a short history of trolls or explaining how much free time and malice your dad's attorney has, these people just want to impart information. If what they sent me is any indication, they had a lot of sick days. Click on the link below to become enlightened.
Image

Bottom of The Barrel Book Reviews-Confessions of a Recovering Preppie 228

Posted by samzenpus from the terminal-case dept.
An anonymous reader writes "Michael de Mare's, Confessions of a Recovering Preppie, has been sitting on my desk a long time, for good reason. They say you can't always judge a book by it's cover but in this case, the unintentionally embarrassing front is perfect. Confessions is a painfully ordinary collection of college stories. Michael seems to have a different definition for the word preppie than the good people at Webster or I do. Even though the author specializes in cryptography, he seems unable to decipher any social situation, himself or the code to writing a book worth reading. Click below to see how confusing it gets.
Space

'Death Star' Aimed at Earth 400

Posted by Zonk from the don't-destroy-earth-that's-where-i-keep-my-stuff dept.
An anonymous reader writes "A spectacular, rotating binary star system is a ticking time bomb, ready to throw out a searing beam of high-energy gamma rays that could lead to a major extinction event — and Earth may be right in the line of fire. Australian science magazine Cosmos Magazine reports: 'Though the risk may be remote, there is evidence that gamma ray bursts have swept over the planet at various points in Earth's history with a devastating effect on life. A 2005 study showed that a gamma-ray burst originating within 6,500 light years of Earth could be enough to strip away the ozone layer and cause a mass extinction. Researchers led by Adrian Melott at the University of Kansas in Lawrence, U.S., suggest that such an event may have been responsible for a mass extinction 443 million years ago, in the late Ordovician period, which wiped out 60 per cent of life and cooled the planet.'"
Power

Football Field-Sized Kite Powers Latest Freighter 251

Posted by ScuttleMonkey from the sailing-with-wind-power-and-other-novel-ideas dept.
coondoggie writes to tell us that a new freighter set to launch in December will be receiving a hefty dose of power from a kite the size of a football field. The 460-foot ship, owned by the Beluga shipping company, hopes to see as much as a 50% drop in fuel consumption during optimal conditions. "The SkySails system consists of a towing kite with rope, a launch and recovery system and a control system for the whole operation. The control system acts like the autopitot systems on an aircraft, the company says. Autopilot software sends and receives data about the sail etc to make sure the sail is set at its optimal position. The company also says it provides an optional weather routing system so that ships can sail into optimal wind conditions.The kites typically fly at about 1,000 feet above sea level, thereby tapping winds that can be almost 50% stronger than at the surface. "
Science

The Rules of the Swarm 166

Posted by samzenpus from the welcome-to-the-collective dept.
Hugh Pickens writes "Researchers are starting to discover the simple rules that allow swarms of thousands of relatively simple animals to form a collective brain able to make decisions and move like a single organism. To get a sense of swarms, Dr. Iain Couzin, a mathematical biologist at the Collective Animal Behaviour Laboratory at Princeton University, builds computer models of virtual swarms with thousands of individual agents that he can program to follow a few simple rules. Among the findings are that swarm behavior has patterns common to many different species, that just as liquid water can suddenly begin to boil, swarm behavior can also change abruptly in character, and that just a few leaders can guide a swarm effectively by creating a bias in the swarm's movement that steers it in a particular direction. The rules of the swarm may also apply to the cells inside our bodies and researchers are working with cancer biologists to discover the rules by which cancer cells work together to build tumors or migrate through tissues. Even brain cells may follow the same rules for collective behavior seen in locusts or fish. "How does your brain take this information and come to a collective decision about what you're seeing?" Dr. Couzin says. The answer, he suspects, may lie in our inner swarm."
Biotech

Brain Heatsink Could Reduce Epilepsy 181

Posted by CmdrTaco from the also-prevent-core-dumps dept.
SimonNight writes "Attaching a heatsink to the brain can reduce the severity of epileptic seizures, Japanese researchers say. They've developed a surgically implanted heat conduit that connects a brain region to a heatsink on the outside of the skull. Seizures get worse when they abnormal activity of brain cells overheats the brain and causes more abnormal firing patterns."
Sci-Fi

Some Moray Eels Have Two Sets of Jaws 158

Posted by kdawson from the one-was-bad-enough dept.
mikesd81 writes that the Mercury News reports that scientists at UC Davis have discovered that some eels have an extra set of jaws deep in their throats that launch forward into their mouths to help pull prey in. "'It looks like a funny pair of forceps with curved sharp teeth,' said evolutionary biologist Rita Mehta, lead author of the research, which appears Thursday in Nature. Before the discovery, scientists thought that all aquatic predators swallowed their prey using suction. By dropping the lower jaw and creating a flow of water into their mouths, they draw in the prey. The two species of moray eels studied by Mehta and Wainwright are the first examples of an alternative feeding method. Instead of sucking, one of these eels bites its prey with its primary set of teeth. It then draws the second set of teeth into its mouth by contracting long muscles. The secondary jaws clamp down on the prey, allowing the eel to move its primary jaws forward in a gulping motion to take in more of the prey. The two sets of jaws take turns until the whole animal has been swallowed." mikesd81 adds a link to a YouTube video of an eel eating, noting "If you look closely right around 34 seconds you can see what looks like the other set of jaws chewing."
Operating Systems

Replacing Atime With Relatime in the Kernel 416

Posted by ScuttleMonkey from the results-apparently-too-much-to-ask-for dept.
eldavojohn writes "Our friend Jeremy at the Kernal Trap has dug up some interesting criticism of atime from Linus Torvalds. As Linus submitted patches to improve relatime he noted: 'I cannot over-emphasize how much of a deal it is in practice. Atime updates are by far the biggest IO performance deficiency that Linux has today. Getting rid of atime updates would give us more everyday Linux performance than all the pagecache speedups of the past 10 years, _combined_.' And later severely beat atime about the head with a pointed stick: 'It's also perhaps the most stupid Unix design idea of all times. Unix is really nice and well done, but think about this a bit: 'For every file that is read from the disk, lets do a ... write to the disk! And, for every file that is already cached and which we read from the cache ... do a write to the disk!'" Well, I guess I can expect my Linux machine to become a little bit faster!"
The Courts

Vote Swapping Ruled Legal 496

Posted by kdawson from the third-parties-could-get-some-respect dept.
cayenne8 writes "During the 2000 election, some sites were set up for people across the nation to agree to swap votes, among them voteswap2000.com and votexchange2000.com. They were established mainly to benefit the third-party candidate Ralph Nader without throwing local elections to George Bush. The state of California threatened to prosecute these sites under criminal statues, and many of them shut down. On Monday the 9th Circuit Court of Appeals ruled that the vote-swap sites were legal (ruling here, PDF). The court held that '...the websites' vote-swapping mechanisms as well as the communication and vote swaps they enabled were constitutionally protected' and California's spurious threats violated the First Amendment. The 9th Circuit also said the threats violated the US Constitution's Commerce Clause.'"
The Internet

Submission + - Semantic Search: An Antidote for Poor Relevancy

Submitted by
ReadWriteWeb
ReadWriteWeb writes: "Dr. Riza C. Berkan, Founder and CEO of hakia.com, writes on Read/WriteWeb about semantic search:

"How satisfied search engine users are today is an on-going debate. However, there is wide consensus, from a scientific viewpoint on the competency of the current search engines: They are half-way to the target and there is huge room for improvement. Semantic search is now under the magnifying glass and the question is 'can semantic search be an antidote for poor relevancy?'""
Portables (Games)

The PSP - Sony's Missed Opportunity 157

Posted by Zonk from the too-bad-so-sad dept.
C|Net passes on the words of Forrester analyst James McQuivey, who lambasts Sony for failing to live up to the opportunity the PSP presented. Though the handheld has certainly been doing better of late, it's hard not to point out that the PlayStation Portable's sales numbers flag in the face of the DS's incredible popularity. McQuivey also makes a point of stating how well the system could have done at taking a slice of Apple's death-grip on the downloadable media market. "'The thing is, Sony could have been all this,' McQuivey said. 'The Sony PSP is one of the best portable entertainment media devices that anyone has come up with in years. It has a relatively big screen, plays video beautifully, has good storage and audio. It could have been the first big mobile carrier for TV shows and movies.' Instead, the mobile-video play of one of the world's largest electronics companies is straggling behind Apple, has shaken the confidence of supporters--especially in Hollywood--and added to the woes of CEO Howard Stringer."

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