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Indian E-music – The right mix of Indian Vibes… » CDs


The first generation of CDs is already rotting and dying

Delivered... Peter Kirn | CDs,Scene | Tue 14 Feb 2017 2:54 pm

Digital media is a double-edged sword. Digital data itself can be duplicated an unlimited number of times without any generational loss – meaning it can theoretically last forever. But digital storage on physical media is subject to failure – and that failure can render the data inaccessible. In other words, archivists (including you) have to transfer data before the media fails.

And we’re already entering an age when one of the most popular formats is reaching the start point for common failures.

A report by Tedium (republished by Motherboard) demonstrates one of the most alarming failures. Some media, evidently using faulty dyes, can fail in under ten years, via something unpleasantly dubbed “disc rot.”

The Hidden Phenomenon That Could Ruin Your Old Discs

At issue is the fact that optical media uses a combination of different chemicals and manufacturing processes. That means that while the data storage and basic manufacturing of a disc are standardized, the particulars of how it was fabricated aren’t. Particular makes and particular batches are subject to different aging characteristics. And with some of these failures occurring in less than ten years, we’re finding out just how susceptible discs are outside of lab test conditions.

In short, these flaws appear to be fairly widespread.

That just deals with a particular early failure, however. In general, CD formats start to fail in significant numbers inside 20 years – on average, not just including these rot-prone flawed media.

What’s tough about this is that the lifespan can be really unpredictable. Before you dismiss the CD as a flawed storage format, many discs do reach a ridiculously long lifespan. The problem is really the variability.

To get an accurate picture, you need to study a big collection of different discs from a lot of different sources. Enter the United States of America’s Library of Congress, who have just that. In 2009, they did an exhaustive study of disc life in their collection – and found at least some discs will be usable in the 28th Century (seriously). The research is pretty scientific, but here’s an important conclusion:

The mean lifetime for the disc population as a whole was calculated to be 776 years for the discs used in this study. As demonstrated in the histograms in Figures 18 and 19, that lifetime could be less than 25 years for some discs, up to 500 years for others, and even longer.

COMPACT DISC SERVICE LIFE: AN INVESTIGATION OF THE ESTIMATED SERVICE LIFE OF PRERECORDED COMPACT DISCS (CD-ROM) [PDF, Preservation Directorate, Library of Congress]

Other research found failures around 20-25 years. That explains why we’re hearing about this problem round about now – the CD format was unveiled in 1982, and by the 90s we all had a variety of optical disc storage to deal with.

There are two takeaways – one is obviously duplicating vital information on a regular basis. The other, perhaps more important solution, is better storage. The Library of Congress found that even CDs at the low end of life expectancy (like 25 years) could improve that lifespan by twenty five times if stored at 5 degrees C (41 degrees F) and 30% relative humidity. So, better put that vital collectors’ DVD in the fridge, it seems. That means instead of your year-2000 disc failing in 2025, it fails in the 27th Century. (I hear we have warp-capable starships long before then.)

But anyone using discs for backup and storage on their own should take this even more seriously, because numerous studies find that writeable CD media – as we purchased with optical drives in the 90s – are even more susceptible to failure.

There are many other issues around CDs, including scratch and wear. See this nice overview, with some do’s and don’ts:

CD and DVD Lifetime and Maintenance [wow, 2007 Blogger!]

Or more:
CDs Are Not Forever: The Truth About CD/DVD Longevity, “Mold” & “Rot” [makeuseof]

I’ve seen some people comment that this is a reason to use vinyl. But that misses the point. For music, analog storage media still are at a disadvantage. They still suffer from physical degradation, and reasonably quickly. For digital media, hard disc failures are even more frequent than CDs (think under three years in many cases), and network-based storage with backups more or less eliminates the problems of aging generally, in that data is always kept in at least two places.

The failure of CDs seems to be more of a case of marketing getting divorced from science. We’re never free of the constraints of the physical world. As an archivist will tell you, we have to simple adapt – from duplication to climate control.

But I’d say generally, with network-connected storage and automation, digital preservation is now better than ever. The failure point is humans; if you think about this stuff, you can solve it.

But ideally digital preservation should not use optical discs because of how unpredictable they are, and because these failures can prevent data access entirely. In particular, writeable discs are very much prone to failure, and if you have data on them, you probably want to consider retrieving that data and putting it on another medium sooner rather than later.

And it’s about time to start heeding these calls, given that they’ve been widespread since the turn of this century. For instance:
IBM expert warns of short life span for burned CDs [PC World, 2006]

The solution then? Tape.

The post The first generation of CDs is already rotting and dying appeared first on CDM Create Digital Music.

Pioneer Reminisces About CDJ’s Evolution; Building Up to New Release? [Video]

Delivered... Peter Kirn | CDs,Scene | Wed 21 May 2014 7:41 pm
The beginning. Now... what's next? Photo courtesy Pioneer.

The beginning. Now… what’s next? Photo courtesy Pioneer.

Pioneer DJ is celebrating its 20th anniversary with some looks back, starting with a celebrity-packed video that recalls the evolution – and impact – of the CDJ. The material is basic (yes, we kind of know what a CDJ is and how vinyl works), but it’s charming to see this star-studded roster take us back through time.

And it’s tough to overstate the CDJ’s role in modern DJ culture. I can’t count the number of CDJ sets I see, even in the age of laptops. (I can count the number of iPad sets I’ve seen – that’d be on one hand, and never in a big venue.)

That makes it odder to remember, in a way, the days when the CDJ was as foreign to some fans as laptops are today. It seems something has happened in the acceptance of technology. First, no tech is going away – even with those heavy crates of vinyl that cost you extra in luggage and get stolen, people still love DJing with vinyl. CDJ’s digital file capabilities haven’t stopped DJs from burning CDs. Laptops haven’t stopped DJs from playing CDJs.

Second, eventually, crowds start dancing and stop judging. Even the laptop, with its detractors, can find its way comfortably into a DJ booth.

That is, if anyone is needling you about what you use to DJ, just … well, be patient. I haven’t recently seen anyone booed off a stage for using a CDJ, to say the least; Traktor and its ilk are already nearly at 100% acceptance.

But there’s another likely subplot to this video.

Pioneer seems to be building up to something. With the emphasis on evolution, it seems unlikely that the turntable we saw at Musikmesse is the whole story. It might be part of some new digital control system. Or, like Moog’s Emerson modular and Korg’s MS-20, it might be a historical piece that comes alongside new tech. (Maybe a Technics-style re-release announced together with a new digital system? That is, I agree with DJ Tech Tools’ Dan White that something’s coming. But I don’t see any clues in this video as to what it could be – and I don’t think a turntable is the announcement they’re teasing.)

The rumor mill is relatively quiet, but I think something’s coming after the nexus. And regardless of what’s coming from Pioneer, you can bet this sort of tech evolution will continue, from someone.

The post Pioneer Reminisces About CDJ’s Evolution; Building Up to New Release? [Video] appeared first on Create Digital Music.

Playlist of radio show No. “8″ (5th Oct 2010) – Theme: AUTUMN Leaves.

Delivered... IE-mAdmin | CDs,IEm News | Tue 5 Oct 2010 9:58 pm

The-Vibrants-Slide-10-2010-1

1. Secret Archives of the Vatican – Track 3: Before Beauty (4:11) – Remembering Machine (EP) – (2009) <= !! Free Download !! (click here)
2. Secret Archives of the Vatican – Track : Enemy Country (5:30, 2010) <= !! Free Download !! (click here)
3. Nucleya (Udyan Sagar) – Track : Kolkata Mong (Vocal Version) (4:02) – single – (2010)
4. Mahisha (Mirko Lalit Egger) – Track : Nada Brahma (4:00) – Asura (EP) (2010, free download)
5. Grahan Chronicles (Indrajeet, Boomshanker) – Track : Flights of Fantasies (6:10) – Beauty and the Beasts (EP) – Chill Om (2010)
6. Ealzee feat. Janaka Selekta – Track 1: Awake (Ealzee’s Morning Dub Remix) (5:36) – Awake Remix (EP) – Chaiwalla Boombox (2010) <= !! Free Download !! (click here)
7. Azam Ali (Niyaz) – Track 1: Abode (Bombay Dub Orchestra’s Continental Drift Remix) (8:37) – CD InnerVersions – A Six Degrees Yoga Compilation (2010)
8. Sub Swara (Dhruva Ganesan, Dave Sharma) – Track 4: Bend You (5:32) – Triggers (2010)
9. Bandish Projekt (Mayur Narvekar) – Track : Soul for Need (7:11) – Chase (2010)
10. Talvin Singh – Track : Janam (4:05)- n.n.(2010)

All playlists here.

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