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NEC ND-6500A

Dec 29,2004 0

7. Protected AudioCDs

 

Review Pages

1. Introduction
2. Transfer Rate Reading Tests
3. CD Error Correction Tests
4. DVD Error Correction Tests
5. Protected Disc Tests
6. DAE Tests
7. Protected AudioCDs
8. CD Recording Tests
9. Writing Quality Tests - 3T Jitter Tests
10. Writing Quality Tests - C1 / C2 Error Measurements
11. DVD Recording Tests
12. CDSpeed/PlexTools Scans - Page 1
13. CDSpeed/PlexTools Scans - Page 2
14. CDSpeed/PlexTools Scans - Page 3
15. CDSpeed/PlexTools Scans - Page 4
16. CDSpeed/PlexTools Scans - Page 5
17. CDSpeed/PlexTools Scans - Page 6
18. CDSpeed/PlexTools Scans - Page 7
19. CDSpeed/PlexTools Scans - Page 8
20. DVD+R DL - Page 1
21. DVD+R DL - Page 2
22. BookType Setting
23. Conclusion

 

NEC ND-6500A - Page 7

Protected AudioCDs

For the test procedure we used three audio discs with different audio copy protections. The ripping process on all protected Audio discs was carried out with Exact Audio Copy v0.9 beta5.

The tested protected Audio discs were:

  • Sony's Key2Audio from "Celine Dion - New Day Has Come"
  • Cactus Data Shield 200 from "Natalie Imbruglia - White Lilies Island"

The Cactus Data Shield 200, contains artificial errors that are not easily bypassed by the reader, while the Key2Audio contains a second session causing problems for readers when trying to read the Table Of Contents (TOC).

The tested tasks are:

  • Recognition of the inserted disc (Yes/No).
  • Ripping all wavs (with EAC's Burst Mode) to the hard disk with copy&compare function.
  • Listening to the produced wavs for any click/skips.

The drive recognized up to the 12th Audio track of the CDS200 disc,

and with the "Retrieve Native TOC" option removed, the drive recognized the 13th track.

The test results are shown in the following table:

Key2Audio
CDS200
NEC ND-6500A
Ripping process completed, EAC reports no problems, Read&Test CRC comparison successful for all tracks
Ripping process completed, EAC reports no problems, Read&Test CRC comparison not the same for all tracks

The ND-6500A managed to rip accurately Key2Audio protected discs, and Read&Test CRC comparison was the same for all tracks. On the other hand, the CDS200 protection system could not be 100% accurately copied. Read&Test CRC comparison was not the same for all tracks.

  • Cactus Data Shield 200.0.4 - 3.0 build 16a (Aiko Katsukino - The Love Letter)

This is a "special" CDS200 build, since it doesn't contain any artificial errors which create problems during the ripping process. Most problems occur when trying to write the ripped wav files, since the produced CD-R disc contains C2 and CU errors! This "problem" is rumored to be connected to specific chipset weaknesses.

We ripped the disc contents with EAC and burned the wav file produced from the Cactus Data Shield 200.0.4 - 3.0 build 16a disc with the latest Nero version as AudioCD+CD-Text. The burned media was checked for C1/C2 errors and for BETA/Jitter errors with PlexTools software using Plextor PX-712SA (firmware v1.05).

CDS 200.0.4 - 3.0 build 16a
NEC ND-6500A
Reading performed without any errors.
  • C1C2 Error rate from PleXWriter PX-712SA (8X CLV reading speed)

  • BETA/Jitter Error rate from PleXWriter PX-712SA

The ND-6500A managed to produce an error free back-up disc, according to the C1/C2 graphs.

We then tried to extract all wav files with the Plextor PX-712SA and PlexTool DAE Error Correction 5th Level enabled:

No errors were reported after extracting all files. The drive can backup the disc 100% accurately.

 

Review Pages

1. Introduction
2. Transfer Rate Reading Tests
3. CD Error Correction Tests
4. DVD Error Correction Tests
5. Protected Disc Tests
6. DAE Tests
7. Protected AudioCDs
8. CD Recording Tests
9. Writing Quality Tests - 3T Jitter Tests
10. Writing Quality Tests - C1 / C2 Error Measurements
11. DVD Recording Tests
12. CDSpeed/PlexTools Scans - Page 1
13. CDSpeed/PlexTools Scans - Page 2
14. CDSpeed/PlexTools Scans - Page 3
15. CDSpeed/PlexTools Scans - Page 4
16. CDSpeed/PlexTools Scans - Page 5
17. CDSpeed/PlexTools Scans - Page 6
18. CDSpeed/PlexTools Scans - Page 7
19. CDSpeed/PlexTools Scans - Page 8
20. DVD+R DL - Page 1
21. DVD+R DL - Page 2
22. BookType Setting
23. Conclusion

 

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