Skip to main content ↑ ↓

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Topic: AccurateRip WAV checker database (Read 17693 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

AccurateRip WAV checker database

----

AccurateRip WAV checker database

Reply #1 –
>We don't have a consistent "standard" on how to consider EAC to have ripped a CD perfectly

You do, it is called AccurateRip.

AccurateRip WAV checker database

Reply #2 –
no we don't.
AccurateRip reports just 2 correct rips out of 10 pressings I have, at least here. I have seen other people complaining that it is never the same pressing of that CD, thus all "incorrectly ripped" tracks.

But you understood what I said.

AccurateRip WAV checker database

Reply #3 –
If a track is not in the database, there is little AccurateRip can do. The new AccurateRip dll (soon to be in EAC) allows accuraterip identification details to be written to an idtag, not sure if Andre is going to implement this, but if he did it would allow files to be looked up at a later date.

AccurateRip WAV checker database

Reply #4 –
Quote from: Bourne on
AccurateRip reports just 2 correct rips out of 10 pressings I have, at least here. I have seen other people complaining that it is never the same pressing of that CD, thus all "incorrectly ripped" tracks.



Encourage more people to use it. Encourage more programs to use it. The CDs cant get in the database if no one puts them in there.

BTW, the vast majority of the CDs I rip anymore are in the database.

AccurateRip WAV checker database

Reply #5 –
> I have seen other people complaining that it is never the same pressing of that CD, thus all "incorrectly ripped" tracks.

It is funny, most people only write something when they want to complain, they do not write to say it is working. See reports from 20 people is not representive of the 18,000 who use it. Sure there are discs missing, nothing is perfect.

There are over 1 million unique tracks in the database. Who knows how many unique tracks are in existance.

AccurateRip WAV checker database

Reply #6 –
If you have a pressing that is not in the database, re-rip the disc in a separate drive. This will allow the database to grow faster and more fully represent pressings available. Some people may advise against this practice as its possible the disc may have consistent errors.

AccurateRip WAV checker database

Reply #7 –
but you know, I am NOT talking about ripping cds here, you guys didn't catch the point... the point is... whenever music becomes completely digital** what use will AccurateRip be of? Shouldn't we start by right now a WAV implementation to check against a major database? I personally have hundreds of WAV data that were ripped from CD, but never took a log of it. AccurateRip-WAV could save me the time to go after a certain CD pressing and re-ripping the thing again. Please get the point... 



**(not guessing in which age this is going to happen but we're getting there soon),

AccurateRip WAV checker database

Reply #8 –
But how are you to know that your wav file is accurte without coming directly from the source. AccurateRip can be used to check against lossless files as long as there is an AR ID in the tags.

AccurateRip WAV checker database

Reply #9 –
spoon, could you calculate the AR ID from a .wav (or other lossless) file? Or do a reverse look up in the database? (e.g. Here's the track - does it match any CD). Or is the point that the data lost/added by unknown/uncorrected offsets is now gone, so it just won't work?

Bourne, I hope the 3 unreadable tracks weren't the 3 which are actually worth listening to on that album?  ;-D PM me if you're really stuck for parts of them (not wishing to go against HA's 30 second rule).

Cheers,
David.

AccurateRip WAV checker database

Reply #10 –
The main problem I see with 'accuraterip for wave' is there is no consistent way of validating a file against a common standard... IE the disc TOC.

ToC is the reference by which all accurate rip tracks are compared to.

That said, if some program were able to generate the applicable crc/signature that accurate rip uses for each track, can then look up that CRC and compare how many toc/tracks/etc match that crc, and then show you the 'confidence' level of that wave, that might be useful...

The key question then is, is the CRC/Signature that accurate rip uses for each track, unique enough to identify a specific rip without the associated TOC.

AccurateRip WAV checker database

Reply #11 –
You could lookup wavefiles if you have a cue sheet.

AccurateRip WAV checker database

Reply #12 –
I'll say this: a freedb-style lookup, built into Foobar2000 that looks up my FLAC albums in the accuraterip database, would be absolutely awesome and would save me TONS of grief.

AccurateRip WAV checker database

Reply #13 –
if we had something like, let's say, a foobar plugin just like Borisz said.

"Song.flac"
Entries 450
Matching 310 (Sane)
Mis-matching 140 (Corrupted)

OK Your FLAC file is SANE (it is matching the majority of rips).
or
NO Your FLAC file is corrupted (probably offset issue).

AccurateRip WAV checker database

Reply #14 –
Considering how files get distributed over the internet, there could be dozens (hundreds?) of copies of the same defective rip, making it look legitimate. How do you make sure that only the original rip gets into the database?

AccurateRip WAV checker database

Reply #15 –
How VERY true. 

I actually do check images that I've ripped previously (as a single file or as seperate tracks, it doesn't matter) against the AR database but will not share how for this very reason.  I make sure to never submit results from previously ripped tracks but I have no way of keeping someone else from doing this.

AccurateRip WAV checker database

Reply #16 –
i just figured that AccurateRip can tell you if a rip is accurate even from a CD-R that wasn't burned with cuesheet, just fill the proper song names, artist and title... I just ripped 3 CD-Rs I made off the net and gave me accurate rips in secure mode test and copy with confidences over 20.

am i just facing a BUG or now I went to be real lucky???

AccurateRip WAV checker database

Reply #17 –
@greynol:

You said - "I actually do check images that I've ripped previously (as a single file or as seperate tracks, it doesn't matter) against the AR database but will not share how for this very reason."


Someone asked:
Originally Posted by gbarrios
"I've already ripped over 900 CD's to WMA Lossless. Is there a way to run AccurateRip against my exisitng digital files to see how many have errors?"
   

Spoon (devel) replied:

"No, AccurateRip requires the CD Table of Contents to identify a track, your wma lossless possibly does not have that."

Greynol, would you be lying to us or spreading FUD?

AccurateRip WAV checker database

Reply #18 –
I'm not spreading any FEAR since contamination of the AccurateRip database is indeed a reality.  You ripped those CD-Rs, right?  Did you make sure to blow away the bin files that they generated before you uploaded your rip results?  If so that's great, but you can see how easy it is...

I'm not UNCERTAIN: I definitely can check waves against the database, and it seems that you did also.

Regarding DOUBT, it's in my nature to always challenge what I read so I try to stay on the other side of that coin.

AccurateRip WAV checker database

Reply #19 –
Am I missing something or is what's being discussed and asked about here exactly what was created and mentioned in this thread?  I ask because I'm rather surprised that thread has gone without a response.  Well, except for mine.  heh

AccurateRip WAV checker database

Reply #20 –
Quote from: greynol on
I'm not spreading any FEAR since contamination of the AccurateRip database is indeed a reality.  You ripped those CD-Rs, right?  Did you make sure to blow away the bin files that they generated before you uploaded your rip results?  If so that's great, but you can see how easy it is...


Greynol - I think that the accuraterip database is mostly pollution-resistant by design.  Even with your method, assuming you don't artificially rotate the drive "manufacturer"/"serial" information on purpose (which can be done by your method), the database should remain somewhat resistant.  The only problem I can think of is if someone designed a coordinated attack that would submit a large number of records for rips that simulate common tool configuration mistakes (e.g. after AccurateRIP begins to allow submissions, how does it know that the confidence it had in the calling tool remains in place if the user can change settings after the fact?).  Also, for simplicity, the above assumes we're talking about commercial CDs.

Bourne - On a related topic, the database doesn't care if the disc you are ripping is a CD or CD-R, a commercial release or a home-brew compilation .  If someone is distributing a flawed/glitched rip that people are burning to CD-Rs and then distributing, at some point...users who have their ripping/burning engines properly configured are going to get positive accuraterip results, even if there are audible artifacts of the original flawed rip.  On the other hand, I don't see why that's a problem, the system is working as designed.  In most cases you trust the recording/mastering engineers and plant to create a nearly flawless CD that you rip from.  In this case, you added another middleman, the one who ripped (or compiled, don't want to assume we're talking about piracy here) the WAVs into the bin/cue that you downloaded.  He's now part of the group you (and the other downloaders who use AR - all 20 of them) implicitly trusted by receiving the bin/cue instead of a CD.

-brendan

AccurateRip WAV checker database

Reply #21 –
There is nothing keeping someone from uploading a CD-R (just one example) burned from something he or she downloaded from the internet.

I can assure you that there are many people who share read-offset corrected  lossless rips and there are many people who burn them to CD-R using an appropriate write samples offset.  This has been going on for several years now and those CD-Rs do get ripped again.

AccurateRip has absolutlely no resistance against this.

AccurateRip WAV checker database

Reply #22 –
greynol...

i did not uploaded any CD-R to the accuraterip database. to be honest i did not even uploaded the commercial ones I have (because they are like 40 confidences already) and I was too lazy to submit (being that I tried once and the results did not go through because of server issues).

i do not know how to check WAV, FLACS, WVs, MP3 or whatever to the AccurateRip database, but surely got curious on how you did it. To be truthful I wanted to know this, just for educational purposes and not to spread this all over internet like I would have enough time to sit here and make a plan to destroy the entire AR database, plus I always like to know if a rip is accurate or not, if i grab anything from the net which in the EAC log says "Read Offset Correction = 0" I get mad, so I wouldn't be the one to pollute accurate rip db just for the fun out of it.

But you know, you are right, I could have done that, couldn't I? So could any person! That is why AccurateRip is not 100% trustful.

AccurateRip WAV checker database

Reply #23 –
I don't think anyone is intentionally trying to "destroy" the database, at least I certainly hope not.  Furthermore,  I don't believe pollution from questionable uploads is wide-spread; I simply feel that it's naive to think such uploads don't or can't exist.

Regarding your "trustful" comment, positive AccurateRip results are trustworthy so long as you're checking an original CD and so long as the data that's being used to verify your rip didn't all come from this same CD.  Positive results are also trustworthy when checking lossless files so long as you are certain that the data used to verify them did not all come from the same source used to create them.  If you didn't create those lossless files yourself, how can you be sure?

As for negative results, I don't trust them implicitly since you can't be certain that the database has your pressing besides the fact that multiple entries can be from the exact same source.

AccurateRip WAV checker database

Reply #24 –
Quote from: greynol on
There is nothing keeping someone from uploading a CD-R (just one example) burned from something he or she downloaded from the internet.

I can assure you that there are many people who share read-offset corrected  lossless rips and there are many people who burn them to CD-R using an appropriate write samples offset.  This has been going on for several years now and those CD-Rs do get ripped again.

AccurateRip has absolutlely no resistance against this.


Why does it need resistance against this?  What problem would that lead to for a regular bought-from-store/amazon/used CD ripping person?

-brendan