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Thread: Very different number of AR matches on same track ripped on 2 drives

  1. #1

    Question Very different number of AR matches on same track ripped on 2 drives

    Ripped a scratched-up thrift store CD and it ripped accurately. But while 22 of the 23 tracks had showed 116 or 117 matches or so, track *4 had only 3 (but still considered an accurate rip.) I decided to rip the same CD on another machine (1st time I've done this) and this time it came back with 79 matches. Certainly better than the 3, but still way off from the ~116 of other tracks.
    1.) Can anyone explain what is going on here to get these weird results?
    2.) In doing this I noticed that each track on my main machine had 4 CRCs calculated, but the new machine only did 3 CRCs per track. Why is that? (*1 has drive offset of 6, *2 has offset of 667.)

    Attached both logs. Apologies for not finding the answer myself. I tried.
    Attached Files Attached Files

  2. #2
    Administrator
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    Re: Very different number of AR matches on same track ripped on 2 drives

    A very interesting CD:

    Track 4: Ripped LBA 21590 to 35485 (3:05) in 0:09. Filename: D:\Working\Violent Femmes\[1993] Add It Up (1981-1993)\04 Gone Daddy Gone.flac
    AccurateRip: Accurate (confidence 3) [Pass 1]
    CRC32: 27ADF139 AccurateRip CRC: 7F821B3B (CRCv2) [DiscID: 023-0034b056-0387145b-2e10f317-4]
    AccurateRip Verified Confidence 3 [CRCv2 7f821b3b]

    Track 4: Ripped LBA 21590 to 35485 (3:05) in 0:15. Filename: D:\Working\Violent Femmes\[1993] Add It Up (1981-1993)\04 Gone Daddy Gone.flac
    AccurateRip: Accurate (confidence 79) [Pass 1]
    CRC32: 1652CF1D AccurateRip CRC: E0291ABF (CRCv2) [DiscID: 023-0034b056-0387145b-2e10f317-4]
    AccurateRip Verified Confidence 79 [CRCv2 e0291abf]
    AccurateRip Verified Confidence 158 [CRCv2 1bbe643a], Using Pressing Offset +39
    AccurateRip Verified Confidence 23 [CRCv2 ebbe6396], Using Pressing Offset -137

    Almost certainly this disc has a pressing fault (right across all sold discs) or copy protection and different drives read it different ways.

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