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Topic: CRC test and accurate rip (Read 6614 times) previous topic - next topic
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CRC test and accurate rip

I would like to ask you something about my rip (I will show you just two tracks):

The problem is that there is no test CRC and copy CRC is different that accurately ripped number. Why are these 2 numbers different (I bolded them)
I have also read that a test isn't needed if c2 isn't used.

Would I need to do test crc anyway?

Also under action I have no option to choose gap detection. How come? Does eac do this on its own (because tracks are the same length as original ones)-- does that mean that eac was delete sth else from an audio and add these (silent) gaps instead of them? because it says:
Gap handling : Not detected, thus appended to previous track  --- but how that lenght of these tracks is the same as original ones? What happens if you don't choose detect gaps?


Track  1

    Filename C:\Users\D\Desktop\Lossless\Texas\01 Track01.wav

    Peak level 99.8 %
    Extraction speed 3.4 X
    Track quality 100.0 %
    Copy CRC F1B51C33
    Accurately ripped (confidence 4)  [56897FCD]  (AR v2)
    Copy OK

Track  2

    Filename C:\Users\D\Desktop\Lossless\Texas\02 Track02.wav

    Peak level 91.2 %
    Extraction speed 3.7 X
    Track quality 99.9 %
    Copy CRC E32F706F
    Accurately ripped (confidence 5)  [D98D68EB]  (AR v2)
    Copy OK

CRC test and accurate rip

Reply #1 –
The AccurateRip checksum is calculated differently. The two numbers are not comparable.

Test & Copy is, IMHO, for when there are no AR matches (or when the disc isn't even in the AR database).

If a track has (e.g.) 4 or 5 matches in the AccurateRip database, as indicated in your log, and as long as you're sure those matching rips weren't yours on the same hardware, then it's overkill to be concerned about the possibility that C2 pointers may not be working properly or that a test rip's CRCs might not match the real rip's CRCs. In other words, it's silly to wear out your drive trying to prove that you and 4 or 5 other people all got the exact same random errors. Odds are much more in favor of the your rips all being error-free.

CRC test and accurate rip

Reply #2 –
Thank you for your answer.

Under action I have no option to choose gap detection. How come? Does eac do this on its own (because tracks are the same length as original ones)-- does that mean that eac was delete sth else from an audio and add these (silent) gaps instead of them? because it says:
Gap handling : Not detected, thus appended to previous track --- but how that lenght of these tracks is the same as original ones? What happens if you don't choose detect gaps?

CRC test and accurate rip

Reply #3 –
Quote
Under action I have no option to choose gap detection.

Did you mean gap handling?
See http://wiki.hydrogenaudio.org/index.php?ti...AC_Gap_Settings for more info.
In brief, you can't select how to handle the gaps before you have EAC detect them. EAC Appends Gaps to the Previous Track by default so unless you want to change the gap handling for some reason you don't need this. The article explains.
korth

CRC test and accurate rip

Reply #4 –
The problem is that under active beginner mode, there is no option to choose gap detection. So I didn't detect gaps. I even didn't have opportunity to choose
appends Gaps to the Previous Track setting. I justi clicked copy selected tracks. Because of that I am worried if there is sth wrong because I didn't detect gaps, but in the log file it says: Gap handling : Not detected, thus appended to previous track -- but I even didn't detect gaps.

CRC test and accurate rip

Reply #5 –
The answer to your question is provided in the link that was given by korth.

Also, please do not use fake words like "sth." It makes it difficult to understand your posts, potentially alienating people who may otherwise help you. Besides, rule #10 in our terms of service forbids it.

CRC test and accurate rip

Reply #6 –
Ok, sorry I won't use them any more.


I just want to ask you something else. When I started eac firstly it showed a window Configure accurate rip. But I don't remember what it said, because I wasn't paying attention to it. Now I want the program to ask me this again. I tried to uninstall it several times and even after new installation it doesn't ask me this anymore. How can I delete this settings in order that the program will ask me this again?

CRC test and accurate rip

Reply #7 –
You have to edit the registry or change the physical address of your drive.

My advice is to let it go. What is displayed isn't very interesting, anyway.

CRC test and accurate rip

Reply #8 –
I am just worried that I did something wrong (because there is a note about key discs request...).

Also I deleted accurate rip folder under appdata-roaming, but it didn't help. Did this affect this register path?

CRC test and accurate rip

Reply #9 –
>Accurately ripped (confidence 5) [D98D68EB] (AR v2)

If AccurateRip is verifying your rips then it is all working as it should.

CRC test and accurate rip

Reply #10 –
When you insert a CD into the drive that is a key disc, the program will ask if you want to use that disc to configure for use with AccurateRip.

Edit: bwssouth, as spoon pointed out, your drive is already configured.
korth

CRC test and accurate rip

Reply #11 –
Thank you for all your replies. I just want to ask you something about speed. My ripping speed is 10x or it gets even 14x. Is that too fast?

Would you recommend to slower it down?

Also with peak level.

Is that normal to get 61% peak level?

Is 100% peak level really risky?

CRC test and accurate rip

Reply #12 –
You can rip as fast as you want. As long as AR verifies your rip is ok, everything is fine. If it starts reporting mismatches/errors, then you can try slowing down. Even then, I don't think it would change much, if anything.

CRC test and accurate rip

Reply #13 –
Thank you.

I was ripping a cd and at 3.7x speed there were some errors found, but then I ripped it again and the speed was around 10x (it got to 13x) and there were no errors found.

Is this copy reliable?
I have to mention that the cd was scratched, but accurate rip reported that is was accuratelly ripped. 

Why drive sometimes take speed 3.7x and sometimes 12x (with the same cd)?

Also what do you think if track quality is 99.9%?  As far as I am concerned, that means that drive needed to re-read some bad sectors.
But is it 100% sure that the drive corrected these bad sectors correctly?

CRC test and accurate rip

Reply #14 –

On one cd there is a track 13 (which is not selected) and as title it says copy protection.
Do I have to select this track 13? 
5 tracks can't be verified by accurate rip -  is this because of protection?

CRC test and accurate rip

Reply #15 –
When creating cue sheets what to choose single wav or multiple wav?

Is it safe to use multiple wav (non-com.) with all cds?