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Home > Hardware Reviews > Optical Storage > DVD Recorders Double Layer

Monday, January 09, 2006
Samsung SH-W162L

3. CD Error Correction

In the following tests we check the drive's behaviour when reading scratched / defective audio discs. The test discs used were the ABEX series from ALMEDIO.

- ABEX TCD-721R

Errors total Num: 1116090
Errors (Loudness) dB(A) Num: 55785 Avg: -73.6 dB(A) Max: -36.0 dB(A)
Error Muting Samples Num: 3684 Avg: 1.0 Samples Max: 8 Samples
Skips Samples Num: 0 Avg: 0.0 Samples Max: 0 Samples
Total Test Result 76.5 points (out of 100.0 maximum)
C2 Accuracy 99.7 %

A fairly decent effort with the specific disc. The total error count is not too high while the maximum error loudness is rather good and very importantly, no samples were skipped. The good performance is rewarded with a good Test Result score of 76.5.

- ABEX TCD-726

Errors total Num: 0
Errors (Loudness) dB(A) Num: 0 Avg: -174.0 dB(A) Max: -174.0 dB(A)
Error Muting Samples Num: 0 Avg: 0 Samples Max: 0 Samples
Skips Samples Num: 0 Avg: 0 Samples Max: 0 Samples
Total Test Result 100.0 points (out of 100.0 maximum)
C2 Accuracy 100.0 %

The ABEX TCD-726 test disc is always easier to read but we did not expect it to be that easy!. No skipped samples and no error muting samples indicate excellent performance.

- CD-Check Audio Test Disc

The CD-Check Test Disc is a very useful tool for evaluating the Sound Reproduction / Error correction capabilities of a CD player. The disc offers a signal combination with disc error patterns to rate the drive's abilities to read music and reproduce it completely. Five tracks on the disc contain a sequence of progressively more difficult tests. These tracks are referred to as Check Level-1 through Check Level-5.

The tracks are reproduced through a software multimedia player (i.e. Windows Media Player). Each level is considered as passed, if the tone is smooth, continuous without interruptions, skipping or looping. The higher the Check Level passed, the more reliable the sound reproduction of the tested drive.

Error Level 1 2 3 4 5
NEC ND-4551A
5/5 5/5 5/5 0/5 0/5

With this test disc, the drive reported average performance, achieving flawless reading with 3 out of 5 tracks.

- Summary

Overall, Samsung seems to have rather good CD Error correction capabilities.




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