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Home > Hardware Reviews > Optical Storage > 32x CD-RW

Monday, April 29, 2002
Samsung SW-232B

4. DAE Tests

Samsung SW-232B IDE CDR-W - Page 4

DAE Tests

- Test Method

We used CD DAE 99 v0.3 beta and EAC v0.9 beta 2 software in order to check the DAE performance of the drive with various AudioCDs (both pressed and CDR). The posted DAE results are the average of both applications. We made a full CD Rip starting from the first to the last track of the CD. The Average DAE reported speeds are displayed in the test graphs.

- DAE features

As the program reported, the drive does not "Caching" of data, supports "Accurate Stream" and "C2 Error info".

 

- Pressed AudioCD results

The Samsung drive supports up to 32x DAE with both pressed and CDR media. The actual average DAE ripping performance (23.5X) is much lower than what the competition offers:

- CDR AudioCD Results

The drive has the same performance as with pressed CDs. The average reading speed of 23.6X is considered low, since the competition shows increased ripping speeds:

- EAC Secure Extract Ripping mode

After many viewer-requests we have added the EAC's secure extract ripping mode results, which ensures maximum produced WAV quality. Notice that for each drive we used the build-in detection function:

Tested Drives
Average DAE Speed (X)
Pressed
CDR
Samsung SW-232B
9.2
9.3
LiteOn LTR-32123S
4.4
5.0
AOpen CRW3248
20.1
20.3
CyberDrive CW-058D
11.2
11.3
Ricoh MP7320A
7.3
7.4

- Advanced DAE Quality

The Samsung SW-232B performed excellently at the Nero CD Speed Advanced DAE quality test. The drive produced 0 data/sync errors and got a perfect score (100). The drive can read "CD-Text" AudioCDs and SubChannel data info.

- Bad CDR Media results

Despite the fact that Nero CD Speed Advanced DAE test stretches drive's mechanism to the max, we decided to do real life tests with a scratched disc. The disc was dirty, and with some light scratches, enough in order cause problems to most of the tested drives. We used CD DAE 99 software to rip the whole disc (756539616 sectors) and the results were very interesting:

Average Speed (X)
Errors
Errors Of Total Disc (%)
Samsung SW-232B
8.4
67189
0.01
LiteOn LTR-32123S
14.4
906044
0.12
AOpen CRW3248
8.4
313
0
CyberDrive CW058D
27.2
17617
0
Ricoh MP7320A
13.3
50892
0.01

As the tests showed,  Samsung SW-232B gave 67189 read errors while reading our test disc.  The amount of errors is the 0.01% of the total data and the average ripping speed is 8.4x. The performance can be considered as good, since only LiteOn LTR-32123S gave a worst result.

- CD-Check Audio Test

Digital Recordings CD-CHECK is a compact disc which allows evaluation of the CD player's "error correction headroom" (i.e. player's ability to correct data errors) and "tracking" (i.e. player's ability to stay on track despite of disc surface or other errors). CD-CHECK uses special digital signals in combination with disc error patterns arranged over five tracks. The five tracks contain a sequence of progressively difficult tests referred to as Check Level-1 to Check Level-5. The higher the Check Level passed the more reliable the sound reproduction of the CD player. A smooth, continuous tone of 20-seconds indicates the player passes that Check Level. Any clicks, interruptions, skipping or looping indicates failure of a Check Level.

CD-CHECK error sizes
Check Level-1
standard manufacturing errors
Check Level-2
0.375 mm
Check Level-3
0.750 mm
Check Level-4
1.125 mm
Check Level-5
1.500 mm

We tested the Samsung SW-232B with the following procedure: We used WinXP Windows Media Player to playback the disc, and using headphones we listened all tracks. A continuous tone of 20 seconds plays in each track. If the drive playbacks without an audible pop or click occurring during playback of the tone it passes the check level. The tests are repeated five times. A result of 5/5 indicates that no pops or clicks were heard in 5 out of 5 playbacks of a particular track. A result of 0/5 means pops or clicks occurred during all 5 playbacks of a particular track. Digital Recordings provides the following interpretation of results:

· Level-1 Pass: Player meets minimum requirements
· Level-2 Pass: Average error correction
· Level-3 Pass: Good error correction
· Level-4 Pass: Very good error correction
· Level-5 Pass: Excellent error correction

- Test Results
Error Level
1
2
3
4
5
Samsung SW-232B
5/5
4/5
0/5
0/5
0/5

The drive did not manage to completely fulfill the 2nd level error correction requirements, and failed to successfully playback (no audible pops or clicks) the other level tones.

- Ripping 90 and 99min CDs

The drive can read up to 99min without any problems.

- Reading Protected AudioCDs

For the test procedure we used 3 protected AudioCDs, which we tested in both recognition and ripping (with CD DAE) processes:

* Pressed AudioCD with Sony Key2Audio
* Pressed AudioCD with Cactus Data Shield 200 (Natalie Imbruglia - White Lilies Island)
* CDR AudioCD protected with Cactus Data Shield (CDS100) - made with Clone Audio Protector v1.1 (adding 30 secs lead-out)

Key2Audio
CDS200
CDS100
EAC
Samsung SW-232B
Cannot recognize disc contents
Reads all tracks as Data tracks - ripping impossible
AOpen CRW3248
Cannot recognize disc contents
Rips entire disc without problems
CyberDrive CW058D
Rips entire disc without problems
Rips entire disc without problems
LiteOn LTR-32123S
Cannot recognize disc contents
Recognizes tracks, cannot rip
Ricoh MP7320A
Cannot recognize disc contents
Cannot recognize disc contents

As the test results showed, the Samsung SW-232B is not prepared to handle any AudioCD protected disc.




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