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Home > Hardware Reviews > Optical Storage > DVD-ROM

Friday, October 14, 2005
Plextor PX-130A

3. CD Error Correction Tests

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

- ABEX TCD-721R

Errors total Num: 1583880
Errors (Loudness) dB(A) Num:71503 Avg: -74.8 dB(A) Max: -18.2 dB(A)
Error Muting Samples Num: 4787 Avg: 1.3 Samples Max: 626 Samples
Skips Samples Num: 2 Avg: 6.0 Samples Max: 6 Samples
Total Test Result 70.8 points (of 100.0 maximum)

The results in this test indicate average performance. The total error count is a little high and the max -18.2dB(A) error level is also high while there were skipped samples.

- 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: 0.0 Samples Max: 0 Samples
Skips Samples Num: 0 Avg: 0.0 Samples Max: 0 Samples
Total Test Result 100 points (out of 100.0 maximum)

A perfect 100 points total test result is achieved here, indicating good CD error correction capabilities.

- 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
Plextor PX-130A 5/5 5/5 3/5 0/5 0/5

Three out of five (3/5) in the third track indicates less than average CD error correction for this particular test. Performance should have been a lot better here.




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