Peculiar AcurateRip result

**tourrilhes** · February 16, 2008, 05:21 AM

Re: Peculiar AcurateRip result

Originally posted by greynol

Sync errors aren't reported in burst mode and I can see from your logs that EAC is not reporting errors so you would not see a sync or a read error.

You are right, what I see sometimes in burst mode are "timing issues". I saw some tonight with the SH-S162L. And you are right that they are not reported in the log.

I did not saw any sync error, timing issue or read error with the HP DVD 400c.

Originally posted by greynol

My concern is that EAC may be shifting the data without telling you, though I have no way of knowing since I didn't author the program. It would be useful to compare the two versions though I concede that even if the two files differ by a shift somewhere within one of the tracks (resulting from repeated or omitted samples) it wouldn't mean that EAC is altering the data after getting it from the drive. It could simply be in the way EAC asks for data that causes the drive to give different results, whatever the differences are between the two versions.

I'll try to finish the analysis of the tracks themselves. Ripping this CD over and over takes time. I've not made any progress with my big stack of CDs.

Originally posted by greynol

It would be good to know the offset of your pressing relative to mine so that I could try burning a CD and test it with various drives to help rule out a consistent defect in the pressing in the event that I can also recreate the problem.

I'll try to do that, but that would assume that the only difference between different pressing is an offset. With the way the cd16 and the SH-S162L react (errors all over the place), I believe there is a genuine issue on the CD itself.

Jean

**tourrilhes** · February 16, 2008, 05:33 AM

Re: Peculiar AcurateRip result

Hi again,

More ripping. I'll start with the LH-20A1P.

First, I did check that in secure mode, it's not giving me any sync or read error. The extra rip I did gave me a confidence 4.

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 22:11

Simple Minds / The best of (CD 1)

Used drive  : LITE-ON DVDRW LH-20A1P   Adapter: 3  ID: 0

Read mode               : Secure
Utilize accurate stream : Yes
Defeat audio cache      : Yes
Make use of C2 pointers : Yes

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Peak level 97.7 %
     Track quality 100.0 %
     Copy CRC 6CC43F51
     Accurately ripped (confidence 4)  [FC233DE5]
     Copy OK


All tracks accurately ripped

No errors occurred

End of status report

Now, what happens in burst mode...

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 21:53

Simple Minds / The best of (CD 1)

Used drive  : LITE-ON DVDRW LH-20A1P   Adapter: 3  ID: 0

Read mode : Burst

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 16

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\16. Life in a day.wav

     Peak level 97.7 %
     Copy CRC A1904F56
     Accurately ripped (confidence 13)  [72453766]
     Copy OK

Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Peak level 97.7 %
     Copy CRC 896C151F
     Accurately ripped (confidence 10)  [FD203DE5]
     Copy OK


All tracks accurately ripped

No errors occurred

End of status report

Confidence 10. Second rip was the same.

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 21:54

Simple Minds / The best of (CD 1)

Used drive  : LITE-ON DVDRW LH-20A1P   Adapter: 3  ID: 0

Read mode : Burst

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Timing problem 0:00:17
     Timing problem 0:02:52

     Peak level 97.7 %
     Copy CRC 896C151F
     Accurately ripped (confidence 10)  [FD203DE5]
     Copy finished


All tracks accurately ripped

No errors occurred

End of status report

Third rip was an error :

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 21:55

Simple Minds / The best of (CD 1)

Used drive  : LITE-ON DVDRW LH-20A1P   Adapter: 3  ID: 0

Read mode : Burst

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Timing problem 0:00:17
     Timing problem 0:03:20

     Peak level 97.7 %
     Copy CRC 3864FDFE
     Cannot be verified as accurate (confidence 4)  [6BAB18CE], AccurateRip returned [FC233DE5]
     Copy finished


No tracks could be verified as accurate
You may have a different pressing from the one(s) in the database

No errors occurred

End of status report

4th rip (17) was an error.

5th rip (16+17) was confidence 10.

6th rip (17) was an error.

It seems that if I rip two tracks together, I'm less likely to have 17 in error. Note that while the CD change speed, I get a timing issue (in the first track ripped).

LH-20A1P Burst mode :
Confidence 10 : 1,2,5
Confidence 4 : none
Error : 3,4,6

LH-20A1P Secure mode :
Confidence 10 : 2
Confidence 4 : 1,3,4
Error : none

So, my LH-20A1P is behaving similarly to the DVD 400c.

Jean

**tourrilhes** · February 16, 2008, 05:45 AM

Re: Peculiar AcurateRip result

Hi again,

Let's start with the Samsung.

In secure mode, it does not like the track at all and give an error.

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 22:07

Simple Minds / The best of (CD 1)

Used drive  : TSSTcorpCD/DVDW SH-S162L   Adapter: 3  ID: 1

Read mode               : Secure
Utilize accurate stream : Yes
Defeat audio cache      : No
Make use of C2 pointers : Yes

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Suspicious position 0:03:49 - 0:03:50
     Suspicious position 0:03:53
     Suspicious position 0:03:56
     Suspicious position 0:03:59

     Peak level 99.9 %
     Track quality 97.2 %
     Copy CRC 0ECDA54F
     Cannot be verified as accurate (confidence 4)  [6AF1084B], AccurateRip returned [FC233DE5]
     Copy finished


No tracks could be verified as accurate

There were errors

End of status report

In burst mode, it's very happy and gives me confidence 10.

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 22:09

Simple Minds / The best of (CD 1)

Used drive  : TSSTcorpCD/DVDW SH-S162L   Adapter: 3  ID: 1

Read mode : Burst

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Timing problem 0:00:05

     Peak level 97.7 %
     Copy CRC 896C151F
     Accurately ripped (confidence 10)  [FD203DE5]
     Copy finished


All tracks accurately ripped

No errors occurred

End of status report

Now, finally a rip with the PX-230A (Spoon will be proud). The previous three rips were in burst mode (message #2 and #4 of the first page). This time, we try in secure mode.

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 15. February 2008, 22:05

Simple Minds / The best of (CD 1)

Used drive  : PLEXTOR CD-R   PX-230A   Adapter: 2  ID: 0

Read mode               : Secure
Utilize accurate stream : Yes
Defeat audio cache      : Yes
Make use of C2 pointers : Yes

Read offset correction                      : 738
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Peak level 97.7 %
     Track quality 100.0 %
     Copy CRC 6CC43F51
     Accurately ripped (confidence 4)  [FC233DE5]
     Copy OK


All tracks accurately ripped

No errors occurred

End of status report

PX-230A burst :
Confidence 10 : 1,3
Error : 2

PX-230A secure :
Confidence 4 : 1

Ok, so the PX-230A is no better than my other drives, basically confidence 4 in secure mode and confidence 10 in burst mode. Lucky that I had the drive in burst mode in the first place, otherwise I would have missed this issue entirely.

I'm done ripping this CD. I would like to know what data there is in the AccurateRip database.

Jean

**Spoon** · February 16, 2008, 01:06 PM

Re: Peculiar AcurateRip result

It would be a major undertaking to trace back the submissions to the program, it is possible but the data does not flow backwards like that, I do not see it as required, it seems clear the EAC in the secure mode is giving wrong results on that CD with multiple drives. This will be right at the end of the last track, and as I said if you can provde Andre with 2 wav files he should find the issue.

The other issue linked, is not related, there a drive goes wrong mid disc and stays wrong, it goes wrong in any program and it is only AccurateRip that finds such an error, c2 and secure ripping would never find that.

**Porcus** · February 17, 2008, 11:51 AM

Re: Peculiar AcurateRip result

Might perchance this be related to the behaviour addressed in http://forum.dbpoweramp.com/archive/...p/t-12883.html ?

(Maybe this discussion should be redirected to EAC's forums though.)

**Spoon** · February 17, 2008, 07:24 PM

Re: Peculiar AcurateRip result

No, that was a consistant error in EAC.

**tourrilhes** · February 17, 2008, 11:21 PM

Re: Peculiar AcurateRip result

Originally posted by Spoon

It would be a major undertaking to trace back the submissions to the program, it is possible but the data does not flow backwards like that, I do not see it as required, it seems clear the EAC in the secure mode is giving wrong results on that CD with multiple drives.

That's a shame, because I was sure there was some interesting data in there.

For me, it's not clear what happening, and I don't think it's as simple as saying "it's EAC". I've ripped over 100 CDs with this procedure, I had various kind of errors, but this is the only time I found that error. Moreover, it happens only on half my drive. So, clearly it is related to a unique combination of factors, the right disk, the right drive and EAC. If it was a bug only in EAC, it would be much more prevalent.

Note also that we have not determined conclusively which is the right version of the track.

Originally posted by Spoon

This will be right at the end of the last track, and as I said if you can provde Andre with 2 wav files he should find the issue.

The error is *NOT* at the end of the track, that was the first thing I checked. I've got many last-track mismatch because of offset differences between my drives. So, it was the first thing I checked. The difference occur 2/3rd of the way in the file.

Actually, I would like Andre to get back to me, but so far I have not heard from him.

Regards,

Jean

**tourrilhes** · February 17, 2008, 11:28 PM

Re: Peculiar AcurateRip result

Hi again,

While puzzling over the result, I realised that only half my drives show the problem (DVD 400c, 20A1P and PX-230A) and the other half does not (cd16, SH-S162L). I was trying to find a pattern.

The only pattern I found is that all drives having issues have a cache, and all drives having no issues don't have a cache. Is it relevant ? Who knows...

Anyway, I decided to try the 20A1P disabling the cache avoidance in EAC (don't try this at home), to see if the cache avoidance routine in EAC has any effect.

Code:

Exact Audio Copy V0.99 prebeta 4 from 23. January 2008

EAC extraction logfile from 16. February 2008, 10:59

Simple Minds / The best of (CD 1)

Used drive  : LITE-ON DVDRW LH-20A1P   Adapter: 3  ID: 0

Read mode               : Secure
Utilize accurate stream : Yes
Defeat audio cache      : No
Make use of C2 pointers : Yes

Read offset correction                      : 6
Overread into Lead-In and Lead-Out          : No
Fill up missing offset samples with silence : Yes
Delete leading and trailing silent blocks   : No
Null samples used in CRC calculations       : No
Used interface                              : Native Win32 interface for Win NT & 2000
Gap handling                                : Not detected, thus appended to previous track

Used output format              : User Defined Encoder
Selected bitrate                : 768 kBit/s
Quality                         : High
Add ID3 tag                     : No
Command line compressor         : C:\Program Files\Exact Audio Copy\FLAC\FLAC.EXE
Additional command line options : -8 -V -T "ARTIST=%a" -T "TITLE=%t" -T "ALBUM=%g" -T "DATE=%y" -T "TRACKNUMBER=%n" -T "GENRE=%m" -T "COMMENT=%e" %s -o %d


TOC of the extracted CD

     Track |   Start  |  Length  | Start sector | End sector 
    ---------------------------------------------------------
        1  |  0:00.00 |  4:23.22 |         0    |    19746   
        2  |  4:23.22 |  3:58.62 |     19747    |    37658   
        3  |  8:22.09 |  4:51.27 |     37659    |    59510   
        4  | 13:13.36 |  5:26.46 |     59511    |    84006   
        5  | 18:40.07 |  4:00.15 |     84007    |   102021   
        6  | 22:40.22 |  4:18.23 |    102022    |   121394   
        7  | 26:58.45 |  4:59.11 |    121395    |   143830   
        8  | 31:57.56 |  4:34.64 |    143831    |   164444   
        9  | 36:32.45 |  4:46.70 |    164445    |   185964   
       10  | 41:19.40 |  4:07.01 |    185965    |   204490   
       11  | 45:26.41 |  4:05.74 |    204491    |   222939   
       12  | 49:32.40 |  5:52.40 |    222940    |   249379   
       13  | 55:25.05 |  3:54.02 |    249380    |   266931   
       14  | 59:19.07 |  3:36.51 |    266932    |   283182   
       15  | 62:55.58 |  4:32.26 |    283183    |   303608   
       16  | 67:28.09 |  4:07.47 |    303609    |   322180   
       17  | 71:35.56 |  4:00.09 |    322181    |   340189   


Track 16

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\16. Life in a day.wav

     Peak level 97.7 %
     Track quality 100.0 %
     Copy CRC A1904F56
     Accurately ripped (confidence 13)  [72453766]
     Copy OK

Track 17

     Filename F:\Music-FLAC\Simple Minds\2001-The best of (CD 1)\17. I travel.wav

     Peak level 97.7 %
     Track quality 100.0 %
     Copy CRC 6CC43F51
     Accurately ripped (confidence 4)  [FC233DE5]
     Copy OK


All tracks accurately ripped

No errors occurred

End of status report

Confidence 4. I tried 2 other time, and I got confidence 4 both times. So, the cache avoidance routine of EAC does not seem to impact the result.

Have fun...

Jean

**Porcus** · February 18, 2008, 03:26 PM

Re: Peculiar AcurateRip result

Originally posted by tourrilhes

Note also that we have not determined conclusively which is the right version of the track.

At first glance, it would be as simpe as:

- EAC in one mode gives RESULT1
- EAC in some other mode gives RESULT2
- dBpoweramp gives RESULT 2,

But from your results on the diff mid-way through the track, I can only speculate about the reason; might it be that this pressing has an error (occuring on each CD in this pressing), which will be left unnoticed by "burst mode" rips?

**greynol** · February 20, 2008, 09:13 PM

Re: Peculiar AcurateRip result

Originally posted by tourrilhes

While puzzling over the result, I realised that only half my drives show the problem (DVD 400c, 20A1P and PX-230A) and the other half does not (cd16, SH-S162L).

This is because those two drives had trouble ripping the track in secure mode (which I'm betting has to do with synchronization problems). This is pretty clear from the results you've posted using the SH-S162L which gives an AR match in burst mode (a mode that makes no attempt to spot errors and recover them). You didn't post any results using the CD-Writer cd16b in burst mode otherwise you might find that it can get an AR match as well.

Originally posted by tourrilhes

The only pattern I found is that all drives having issues have a cache, and all drives having no issues don't have a cache. Is it relevant ? Who knows...

It shouldn't be. Caching vs. non caching only involves reading an extra 2MB after each 2MB burst is either checked for C2 errors or compared twice (depending on the C2 setting) and reading an extra 2MB between each additional re-read if EAC has determined that re-reads are necessary.

It's pretty clear that this is an EAC problem. Please send me a PM over at Digital-Inn so I can help you determine which version of your rip is correct. You haven't responded over there for a while, so I thought you lost interest.

**tourrilhes** · February 21, 2008, 06:16 AM

Re: Peculiar AcurateRip result

Originally posted by greynol

You didn't post any results using the CD-Writer cd16b in burst mode otherwise you might find that it can get an AR match as well.

If you want, I could try that, but I don't think it will be revelatory.

Originally posted by greynol

It shouldn't be. Caching vs. non caching only involves reading an extra 2MB after each 2MB burst is either checked for C2 errors or compared twice (depending on the C2 setting) and reading an extra 2MB between each additional re-read if EAC has determined that re-reads are necessary.

You have a better understanding of the internals of EAC, I was stabbing in the dark. Now that Andre is on board, hopefully we should be more directed.

Originally posted by greynol

It's pretty clear that this is an EAC problem.

I personally don't know.

Originally posted by greynol

Please send me a PM over at Digital-Inn so I can help you determine which version of your rip is correct. You haven't responded over there for a while, so I thought you lost interest.

Well, I actually know which one is the most correct of the two.

I did not post because I had nothing to add, and I'm not impatient. I know that Andre needs time to digest all the data.

Thanks very much for your help.

Jean

**greynol** · February 21, 2008, 06:44 AM

Re: Peculiar AcurateRip result

Originally posted by tourrilhes

Now that Andre is on board, hopefully we should be more directed.

There is no question.

Originally posted by tourrilhes

Well, I actually know which one is the most correct of the two.

The one done with EAC's secure mode?

Originally posted by tourrilhes

Thanks very much for your help.

You're entirely welcome. Thanks for raising the issue and thanks to Spoon for putting up with me. :D

Peculiar AcurateRip result

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