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.
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.