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Why I Ripped the Same CD 300 Times
- zkms 8y ago> It turns out you can’t fix noisy data by intersecting it with a different-but-related noise source. No you actually can; it's called "soft combining": https://en.wikipedia.org/wiki/Hybrid_automatic_repeat_request#Hybrid_ARQ_with_soft_combining https://en.wikipedia.org/wiki/Hybrid_automatic_repeat_reques... and it's a crucially important feature in high-performance air interfaces (like LTE).
- valine 8y agoThat’s kind of like how you can reduce noise in low light images by taking a series of photos and averaging them together.
- ssfrr 8y agoThat assumes the noise is uncorrelated though (which the noise on a camera sensor generally would be). If the noise is correlated then averaging doesn't help.
- zaarn 8y agoThere is lots of noise you don't get removed by averaging, ie the base noise of the sensors. For those you usually (for amateur astrophotography) take four sets of pictures (usually about 20); with the lens removed and cap on the mount, lens mounted with lens cap, lens mounted into telescope but telescope cap on and lastly telescope aimed at target but a thick cloth over the opening. All those compensate for the various ways light may enter the camera (lens mount, lens frontmount, telescope housing, telescope lenses and mirrors) and let you subtract those out after averaging your result.
- kqr 8y agoI really don't think that's the same thing. Taking multiple shots of the same subject is just taking a shot with a really long shutter time, except in slices, a little bit at a time. What OP was talking about was something akin to using the noise in a photo of one subject to reduce noise in another photo of a completely different subject but with the same camera. That works, to a point, but not great.
- dylan604 8y agoIn astro-photography, this is quite common. You take a series of normal images. You then cover the the lens, and take the exact same exposure. After a series of processing, the noise pattern from the dark frames is subtracted from the normal images. It works quite well.
- jlarocco 8y agoFWIW, some cameras can use that technique to help de-noise long exposure shots. The control image is a long exposure with the shutter closed, and that image (which should be completely black) is subtracted from the long exposure shots.
- mrob 8y agoIt's only the same as a really long shutter time if the subject is stationary, and in the case of Earth-based astrophotography it never is, because atmospheric turbulence is always moving the image. If you take multiple separate shots you can combine only the good ones: https://en.wikipedia.org/wiki/Lucky_imaging https://en.wikipedia.org/wiki/Lucky_imaging
- jmillikin 8y agoI'm not very familiar with telecom or radio protocols, but I think the extra information in an LTE packet (the parity bits + redundant data bits) might be critical to that sort of error correction working. The raw PCM coming out of an optical drive doesn't provide that kind of metadata, so at best I can count how many values appear at each position and try to guess on that. If the values after 20 rips look like this: CD1 position 0xFFFF A0: XXXXXXXXXXXXXXX A1: XXX A2: XX CD2 position 0xFFFF A0: XX A1: XXX A2: XXXXXXXXXXXXXXX then I'm not sure how any sort of combining could usefully recover the original value.
- userbinator 8y agoYou have to look at the effect of the noise on the statistics of the bits, since those are what's physically changing, and not the PCM output after all the error correction layers.
- zkms 8y ago> You have to look at the effect of the noise on the statistics of the bits, Yes. Soft combining (in systems designed for it) isn't even done on bits, it's done on the actual analog (well, a digitised version of the analog value, sometimes termed a "log likelihood ratio") values of the signal in question -- before any quantisation happens. This isn't to say that you can't apply the techniques here (where stuff obviously gets quantised unless you can find a way to get the raw signal from the photodiodes), but you need access to bits with the least amount of error-correction involved (or find a way to infer what the statistics of the original raw bits are from what the decoding machinery outputs).
- dingo_bat 8y agoI wonder if the HDD the author used to store those bits is also having read errors, which the drive is correcting on the fly.
- jmillikin 8y agoIt's very likely! There's a couple approaches one can take to detect this: * The rip log generated by EAC includes a CRC of the audio data. I can calculate this independently to ensure the data is the same as what EAC wrote. * The rip log itself has a checksum that can validate the CRCs are intact. * I archive my rips in Google Cloud Storage along with a sha256. If my NAS's copy goes bad I can fetch the backup, and validate that it's the original data.
- chungy 8y agoAlternatives or additions: * Store par2 parity information alongside your cloud storage and/or NAS: https://github.com/Parchive/par2cmdline https://github.com/Parchive/par2cmdline * Use a file system with strong data checks and repairability, basically meaning, ZFS with a sufficient redundant set up. "zpool scrub" can do wonders, and you can guarantee backups to a different pool are identical to the source.
- Fnoord 8y agoIn the scene they've used SFV (CRC32) for ages. It works very well and quick except it isn't useful against tampering. PAR2 provides additional parity, and it also useful if for Usenet. You can also use RAID. For example, Synology NAS easily allow RAID1 plus btrfs.
- jackvalentine 8y agoThis kind of obsessiveness was used to create the best values of Oink's pink palace - until that modern library of alexandria was burned down.
- Puer 8y agoFollowed by the loss of what.cd. It was truly one of the most impressive catalogs of information on the internet.
- angersock 8y agoBut profits and copyright you see! If we allow piracy like that to exist, how will the owners of the copyright be able to ensure that the works are kept accessible?!
- Cthulhu_ 8y agoI really hope there are a few people still out there that have the full catalog of what.cd archived and either keep it alive by sharing it in the darker recesses of the internet, or are able to secure it somewhere. There really needs to be a media museum, an international library of all that has ever been produced, from a hundred different recordings of the old composers to whatever crap your 15 year old neighbour is uploading to soundcloud.
- Fnoord 8y agoIf its anywhere like the scene and DCPP used to be then there's archivists who have the extremely rare content, including for example MP3.com rarities. A full archive is very convenient, but if you're a collector who's after certain rarities all it requires is a good network (or networking skills). Social network, and some bandwidth.
- voltagex_ 8y agoif you know where those MP3.com archivists hang out - a friend of mine is after a particular disc.
- nayuki 8y agoXiph.Org has a command line program called cdparanoia, which is built with the same philosophy as Exact Audio Copy (EAC). The FAQ page explains a lot about why the program is necessary. https://www.xiph.org/paranoia/ https://www.xiph.org/paranoia/ https://www.xiph.org/paranoia/faq.html https://www.xiph.org/paranoia/faq.html
- _emacsomancer_ 8y agocdparanoia, I find, works better than EAC. The latter seems to be 'the standard' though.
- mackal 8y agoA certain now dead site parsed EAC logs for verification purposes. (At least why it's the standard)
- whitepoplar 8y agoI miss what so badly :'(
- datanut 8y agoAny more insight on the dead site or how it became a standard? Is its DB still available?
- hydrox24 8y agoYes, the database has been published. https://twitter.com/whatcd/status/923942203080273921 https://twitter.com/whatcd/status/923942203080273921 EAC was the standard because it was the only free tool that could bypass firmware error correction (with 'secure' mode) and log the whole process securely, in a way that could not be tampered with easily.
- _emacsomancer_ 8y agoA certain now dead site's successor also parses EAC logs (and relies on its checksumming).
- tambourine_man 8y agoTangentially related: I think this is the first time I see an emoji URL “in the wild“, not as a proof of concept. I don't know how to feel about it.
- ivan_ah 8y agointeresting; i didn't know you can do that... urldecode(%F0%9F%A4%94) = would be pretty awkward to see the urlencoded version (e.g. on paper and source code), but I guees it just works as far as UI is concerned. Can you have emoji domain xn--?? What about and emoji tld?
- tim-- 8y ago> have emoji domain xn--?? Yes. See http://xn--i-7iq.ws http://xn--i-7iq.ws Edit: HN does not let me enter emoji characters.
- matte_black 8y agoWow, didn’t know this was possible. What’s next, emoji in stock symbols? Might as well...
- infogulch 8y agoWhen we start writing legal documents in emoji we will have taken hieroglyphics full circle.
- alanfalcon 8y agoI believe Neal Stephenson essentially anticipates this in Anathem.
- pasta 8y agoIt's just unicode. And I think it's good browsers will change it into the the dashed version. Because: www.аррlе.com/
- dsnuh 8y agoThrift stores are a cheaper and very reliable alternative to Fry's, if you are ever looking for one. I've never not seen a CD/DVD player at a thrift store.
- Bluecobra 8y agoGood point, I’m curious if older drives produce better results. I remember some discussion 10-15 years ago saying that modern floppy drives were junk compared to older drives. The argument was that the prices dropped so much that build quality also suffered. I wonder if the same applies to CD/DVD-ROM drives.
- dsnuh 8y agoMy experience is that the more off-brand the player, the more lenient it is with what it will play. I had a crap Lite-On that would play anything.
- ivan_ah 8y agoAwesome read! It's great to see someone faced with tech challenge and not back down. We need more of that. For anyone interested, here are some links to the details of error-correcting codes (ECC) used on CD-ROM: - http://www.usna.edu/Users/math/wdj/_files/documents/reed-sol.htm http://www.usna.edu/Users/math/wdj/_files/documents/reed-sol... - http://www.multimediadirector.com/help/technology/cd-rom/cdrom_spec.htm http://www.multimediadirector.com/help/technology/cd-rom/cdr... - http://bat8.inria.fr/~lang/hotlist/cdrom/Documents/tech-summary.html http://bat8.inria.fr/~lang/hotlist/cdrom/Documents/tech-summ... But I think CDDA possibly uses different (less) ECC... so info in links might not be 100% relevant. It's a shame this cool tech is not being used anymore. As an information theorist, I used to be able to point to optical disks as an application of my field, and be like "see all that math is useful for something," but now I don't have anything shiny to point to anymore :(
- dylan604 8y agoWhile it might not be shiny, could you not point to the math involved in encryption used in day to day usage like HTTPS, OTR, cryptocurrencies, etc? ECC is still used in RAM, and bitwise math is still used in RAID arrays. Again, not shiny, but still valid examples.
- taneq 8y ago> As an information theorist, I used to be able to point to optical disks as an application of my field, and be like "see all that math is useful for something," but now I don't have anything shiny to point to anymore :( Surely there's some forward error correction built into, well, pretty much any physical media these days? I can't imagine BluRay would need less of it than a CD.
- Cthulhu_ 8y agoI'm sure pretty much all storage media (SSD's and such) have it, as well as internet protocols and digital media (now that having storage locally is becoming less cool)
- 8y ago
- itsthecourier 8y agoGuys, am I the only one who actually wants to listen to the song?
- elitistphoenix 8y agoIt kind of makes you want to hear this track he was so dedicated to getting off the CD.
- jmillikin 8y agoI don't know how much piracy discussion is permitted on HN, so I'll be brief: this album is contained in the lossless music collection.
- angersock 8y agoTouhou is, iirc, basically completely public domain. It's a gigantic, bizarre diaspora fueled entirely by dedicated fans. Everybody who thinks that copyright is required should see the success of 2hu.
- gwern 8y ago> Touhou is, iirc, basically completely public domain. Zun actually does have a semi-formal license/terms of use (it primarily bans commercial use but also quite a bit of other stuff, much of which I think goes ignored): http://touhou.wikia.com/wiki/Touhou_Wiki:Copyrights http://touhou.wikia.com/wiki/Touhou_Wiki:Copyrights https://www.animenewsnetwork.com/news/2011-02-14/tohou-project-creator-restricts-commercial-works-anime https://www.animenewsnetwork.com/news/2011-02-14/tohou-proje...
- anilakar 8y agoAFAIK the whole doujin scene is all about "go on, violate our copyrights but don't complain when people violate yours". ZUN's blanket ban on commercial distribution makes it really difficult and expensive to legally obtain anything when the only distribution channels are specialized doujin stores -- it's still commercial, but the ones getting the profits are various middlemen and not the arrangers and performers.
- jmillikin 8y agoZUN has granted blanket permission for fanworks distributed in the spirit of the original games, but explicitly forbids distributing arrangements of his music through mainstream sales channels (music stores, iTunes, HDTracks, and so on).
- tambourine_man 8y agoI have about 200 DVDs, most 10 years old. Probably 1/4 is unreadable by now: MacOS does not recognise the disk when inserted (oddly enough, much older CDs still are). The data is not terrible valuable and probably already mostly stored elsewhere, but I'd like to give it a try. Is there hope for ddrascue? I've had mixed results in the past. Are there better alternatives?
- e12e 8y ago> MacOS does not recognise the disk when inserted (oddly enough, much older CDs still are). Difference in data density? A cd stores ~800mb, a DVD ~4700mb.
- anticensor 8y agoCD stores 650MB in standard format. 800MB is overburn.
- tambourine_man 8y agoCould be, but I’m also betting on media quality. First recordable CDs were expensive. Those last DVDs I bough were dirt cheap
- topspin 8y agoIf you take away one thing from the article it is this; try different readers. Some readers perform far better than others. I have one 'magic' DVD reader that will overcome damage that makes most other drives choke with errors, and the result is usually a flawless rip.
- voltagex_ 8y agoAVSForum, Doom9, Redump and Hydrogenaudio are all good places to find out about these drives, too.
- tambourine_man 8y agoYeah, an old iMac is the one that reads most them. But I was hoping for something better.
- gwern 8y agoThis is a little awkward. The Touhou album in question is already in the Touhou Lossless Music Collection (at least the last release: http://www.tlmc.eu/2018/01/tlmc-v19.html http://www.tlmc.eu/2018/01/tlmc-v19.html since it's from 2005, it's probably been in most of them), and has track 3 ("The End of Theocratic Era" by "弘世"). I just checked the TTA and track 3 sounds fine. If anyone is terribly curious what it sounds like, I've put up an OGG copy here: https://www.dropbox.com/s/u88u1xpdmdxbqal/03%20%E5%BC%98%E4%B8%96%20-%20The%20End%20of%20Theocratic%20Era.ogg?dl=0 https://www.dropbox.com/s/u88u1xpdmdxbqal/03%20%E5%BC%98%E4%... Oh well. I'm sure it was a great learning experience anyway. :)
- jmillikin 8y agoMost of the TLMC rips are range rips with unclear CUE data, which makes it difficult or impossible to verify they were correctly ripped. For this album in particular, the audio CRCs of the other tracks don't match up between TLMC and a fresh rip: TLMC: 01.wav: 9A5E3226 02.wav: 577A675B 03.wav: 3548C299 04.wav: E5DEC006 05.wav: D33AC4AE 06.wav: 7427AC6F 07.wav: 83A58517 08.wav: 0DCA8419 09.wav: 703BAEAC My rip: 01.wav: 565F2B5A 02.wav: E916B3A2 03.wav: A595BC09 04.wav: D989F0D6 05.wav: C6A2DD2B 06.wav: C8403284 07.wav: D01D6BC4 08.wav: 8786C1AA 09.wav: 1E3641DD
- scrollaway 8y agoIs there such a thing as an audiodiff to tell how different they are to yours?
- jmillikin 8y agoYes: you can use Audacity (https://www.audacityteam.org/ https://www.audacityteam.org/) to "diff" two waveforms by subtracting one from the other. For comparing .wav files you can also treat them as plain binary data, and use standard diff tools. For example I used `cmp -l` to count differences between rips, and `vbindiff` to view them.
- 8y ago
- pmoriarty 8y agoIf you want to avoid having to do this you might want to look in to embedding error correction data on to your CD/DVD (or even on to separate media) at burn time, using dvdisaster: https://en.wikipedia.org/wiki/Dvdisaster https://en.wikipedia.org/wiki/Dvdisaster
- jugg1es 8y agoFry's Electronics should pay this man for the plug at the end. He made a good case to go there if you need to conduct an experiment requiring an unreasonable number of unique disk drives right now.
- fusiongyro 8y agoWhat a beautiful story of devotion! Imagine someone going to this much trouble over your work, it's quite impressive. I used to worry about this kind of thing, using cdparanoia and so forth on Linux to manage my music. When I went Apple I eventually went iTunes, which is a mixed blessing. I feel like it has made me able to appreciate more music more easily by lowering the cost barrier, but it has reduced the amount I appreciate an album substantially. And it's hugely inconvenient when they disable my account for strange reasons or my internet connection vanishes. So I may return to manual management someday.
- andai 8y agoI recently found a backup of an old portable mp3 player and realized that the manual curation and limited storage really made me appreciate my collection more. Gave me a wonderful warm feeling going through that collection.
- userbinator 8y agoThis is very similar to the technique used by https://en.wikipedia.org/wiki/SpinRite https://en.wikipedia.org/wiki/SpinRite This didn’t seem to be an issue of wear or damage – the CD itself was probably defective from the factory. It would be very interesting to look at the surface of the disc under a microscope, to see if you can find the defective area --- knowing which track it's in, you can determine the approximate diameter at which it occurs, and then rotate around that diameter looking for abnormalities. The pits and lands are invisible to the naked eye but easily viewable with a light microscope: https://en.wikipedia.org/wiki/File:CD_Pits_at_6.25x_Magnification.jpg https://en.wikipedia.org/wiki/File:CD_Pits_at_6.25x_Magnific... At 1200 bits/mm linear density of a CD, the 5KB (40Kbit) defective section will correspond to ~33mm of track --- probably quite obvious if it is a physical defect. (A "logical" defect, where the bits are OK but the ECC is wrong, will not be apparent at the physical level.)
- jmillikin 8y agoI don't have the equipment for this, but it might not be needed. The disc has writing that goes "through" the top cover, such that you can read the text by holding the disc up to a normal lightbulb. The text is across the entire diameter and I don't know why it would cause problems for only this track. Possibly the shape of the text? edit: photo https://i.imgur.com/fdtAAPG.jpg https://i.imgur.com/fdtAAPG.jpg
- userbinator 8y agoThat could be an area with insufficient contrast, a similar problem that early drives had when CD-Rs started appearing. In that case I would've tried a mirror or black pad (about the only thing those audiophile "disc mats" are good for...) on the top, to shift the offset level. Note that CD uses 780nm infrared so what the human eye sees is not necessarily what the drive sees --- this is why "transparent" or "black" CDs work.
- aichi 8y agoHave you tried to overcome the issue with putting some reflective or non-reflective sticker over that text?
- geargrinder 8y ago"This sort of thing is common when buying used CDs, especially if they need to transit a USPS international shipping center. " As a used CD seller who often ships internationally with no complaints, I am interested in learning more about what is behind this statement.
- jmillikin 8y agoIn my experience: as the box size gets bigger, the treatment gets rougher. Single CDs in bubble wrap envelopes come through fine, as do small hardwall boxes. CDs in medium boxes (10-20 CDs) often arrive with box damage and maybe some torn internal packaging. I once used a shipping aggregator that put 50 CDs in one box, they were so banged up that I had to buy replacement jewel cases. If you ship CDs, I have only one request: please please do _not_ put bubble wrap _inside_ the jewel case! Some sellers do this and it just destroys those little plastic retainer teeth.
- geargrinder 8y agoThanks for the feedback. Bubble envelopes don't really protect CD jewel cases very well, which is why I create my own packaging by wrapping the cases individually in recycled cardboard. Simple and cheap. CDs are amazingly resilient and with a proper polishing machine scratches can be completely removed without changing the data on the disc. It is damage on the non-playing side of CDs which is impossible to recover from.
- anfilt 8y agoTouhou! I dont see that everyday on hackernews.
- UlisesAC4 8y agoYou do not really see it lately.
- anfilt 8y agoThe amount of fan music the is surprising. A lot is pretty decent too.
- inawarminister 8y agothe time of utter popularity has passed, but it is still plenty popular both in the world and Japan specifically. There's a few dozens conventions and Touhou music concerts/DJ-ing per year, the biggest of which is the Reitaisai and its accompanying events. And a new spin-off game is coming out this August!
- rocky1138 8y agoNot including a sample of the audio he/she ripped in an article such as this should be considered a type of crime.
- skookumchuck 8y agoWhat I'd do is the same thing I do for scratchy records. Look for the scratch in a waveform editor. Interpolate the data across the scratch using cubic splines. You can also paste in data from the other channel if it is similar enough.
- ygra 8y agoI thought the point was to get the actual data back (not that you could with records).
- skookumchuck 8y agoTrue, but he was using statistical techniques, which are not guaranteed to produce the actual data. My technique is akin to what an artist would do in "restoring" a damaged photograph. Often the glitch is only one data value being off, and it does produce an audible click.
- Havoc 8y ago>It turns out you can’t fix noisy data by intersecting it with a different-but-related noise source. This doesn't make sense to me. Why didn't this work?
- arc2 8y agoCool URL
- singingfish 8y agodoesn't abcde[1] do this? [1]https://abcde.einval.com/wiki/ https://abcde.einval.com/wiki/
- sjwright 8y agoIn case anyone was wondering why a "red book" audio compact disc isn't designed to be resiliant in a way that is familiar to a modern technologist (or even compared to a CD-ROM disc) the basic reason is that the former is designed to stream with no buffering directly into a DAC chip built with technology from the late 1970s. It had to handle data rates that were incomprehensibly massive for the time, so only the most insanely basic error handling was feasible. Whereas the "yellow book" CD-ROM standard got to take advantage of over four years of technology advancement. Plus it doesn't have a real time requirement, so there's plenty of time to calculate more advanced checksums and error correction codes. In many respects, an audio CD is more like a vinyl record than a data storage format.
- pwg 8y ago> In many respects, an audio CD is more like a vinyl record than a data storage format. The design is nearly identical to what one would get if one simply literally (almost) digitized a vinyl record. A single long spiral of data on a disk. The most significant shift is that vinyl records read from outside in, while audio CD's read from inside out. Even the method of manufacture is essentially a clone (audio CD's are "pressed" just like vinyl records are "pressed", just in different pressing machinery). > built with technology from the late 1970s. It had to handle data rates that were incomprehensibly massive for the time, so only the most insanely basic error handling was feasible. Yes, the limits of late 1970's technology had a huge impact on the overall design, but at the same time the design also took advantage of the fact that audio when being played back in real time is reasonably tolerant of a small level of error resulting from the read-off of the disk. Most listeners would never hear the random errors because they either are below the noise floor of the amplifier tech. at the time, or because the resulting analog wave was close enough to not be noticeably different.
- sjwright 8y ago> The most significant shift is that vinyl records read from outside in Equally significant (and equally interesting) is how they spin. Whereas vinyl has constant angular velocity—they spin at the same rate from beginning to end, resulting in lower information density as you get towards the inner grooves—audio CDs have constant linear velocity, meaning that the rotational speed gradually changes as the disc is played so that the information density is equal from beginning to end. For the era, this is very cool tech. (I'm also awestruck about how they managed to get the laser head alignment to work perfectly back then, it's practically magical.)
- nottorp 8y agoOut of pure curiosity, what's the prison sentence in the US for ripping a CD 300 times? A few years multiplied by 300?
- Mokou 8y agoZero, because it isn’t illegal to rip CDs.
- theandrewbailey 8y agoSounds like the RIAA needs to do more campaign contributions. \s
- nottorp 8y agoIt isn't? I thought it carried the death penalty...
- pbhjpbhj 8y agoIt is in the UK, parliament made it legal, but media interests realised parliament had erred and the people were saved from the grave harm of format-shifting media they had paid for.
- peatmoss 8y agoFun times. Once upon a time I was working at a university in New Zealand. At that time Apple had created a way to legally stream your iTunes catalog to other LAN users—mostly as a way of enabling the college campus music sharing experience without the illegalities of OG Napster, Limewire, and the ilk. I got a nastygram from the IT department for sharing my iTunes catalog. I replied that it was my understanding that the iTunes streaming was legal. They concurred, but said that format-shifting my albums had been illegal. I countered that I format shifted my CDs in the US, where it was legal. In the end, the IT security people agreed that I was probably totally legal, but they asked me to please refrain from leaving the iTunes sharing turned on because it made their lives hard. That was a compelling argument, and so I turned off iTunes sharing. :-) EDIT: I should note that format shifting was later made legal in NZ last I knew. Hopefully it still is.
- voltagex_ 8y agoI wonder if what.cd has this album before it was razed. A lot of value was lost when that site went down.
- crtasm 8y agohttps://interviewfor.red/ https://interviewfor.red/
- voltagex_ 8y agoOh jesus. These guys thought the what.cd interview was too easy, didn't they?
- cuckcuckspruce 8y agoIt's substantially the same interview.
- deleted 8y ago[deleted]
- zuzzurro 8y agoI see that no one has mentioned yet cuetools and the cuetools database in this thread. That seems the perfect tool for this kind of repairing (provided someone else has ripped an accurate version in advance, of course)..
- jaclaz 8y agoAs a side note and not necessarily related, one of the devices I keep using in case I need to read a (data, not music) CD is a very, very old CD-ROM drive, of the original rype that use a caddy cartridge, 1x in speed, with a SCSI connection. Till now it never failed on discs that current, modern and newish fevices had issues with.
- phyzome 8y agoWhoa, this update is weird: « EDIT: After further investigation, I no longer believe it’s a factory defect. If I write the beginning or end of the affected track to a blank CD-R and rip it, the rip fails with the same error! Give it a try yourself with minimal.flac. » https://github.com/jmillikin/john-millikin.com/blob/master/%F0%9F%A4%94/why-i-ripped-the-same-cd-300-times/minimal.flac https://github.com/jmillikin/john-millikin.com/blob/master/%... Uh... so what's going on there? Something that breaks the error correction algorithm, or what? Can anyone with a burner repro this?
- craftyguy 8y ago> Can anyone with a burner repro this? This comment just made me realize that I haven't had a system with a burner in it for probably about 10 years.. I'd be SOL if I needed to burn a CD for some reason.
- wccrawford 8y agoI actually had to rip out the burner from my last computer and install it in my new computer the other day to help a friend try to diagnose an issue he was having with burned DVDs of his own work. Sadly, I wasn't any help other than confirming his issue.
- phyzome 8y agoMy laptop has an optical drive, and I think it's supposed to be able to burn various disc types... but where do I find a blank CD-R? :-)
- rrauenza 8y agoThis reminds me of trying to rip Paul Simon's Concert in the Park some number of years ago. Everytime I ripped it, there was a minor glitch in The Obvious Child at 2:02-2:03. I also heard it on the CD. So I tried different drives, different machines, Linux, Windows, iTunes, Exact Audio Copy, etc., to no avail. Finally I reassesed my assumptions and found a copy of the track in the wild -- hey! Same glitch. Then I emailed a friend who I knew also had a copy of the album -- same glitch! Eventually found an obscure forum where someone also complained about the same glitch. I always wonder how that made it out of the studio -- was it a glitch in the recording equipment of the concert? Surely they used multiple recorders?
- rrauenza 8y agoFound a VHS video -- https://www.youtube.com/watch?v=obNpTfAga6M https://www.youtube.com/watch?v=obNpTfAga6M -- the artifact isn't there, so it must have been in post production?
- euyyn 8y agoThe jump between the 53th and 54th rips is very suspicious! Didn't you look more into it to try and explain it?
- pmarreck 8y agoIt has always struck me as odd that the powers that be have yet to figure out how to harness the love (obvious since they toil to preserve these media works at the best possible quality, albeit illegally) of data hoarders.
- vasili111 8y agoTake a look at: http://ixbtlabs.com/articles2/magia-chisel/index.html http://ixbtlabs.com/articles2/magia-chisel/index.html