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:
1764232 |
|
Errors
(Loudness) dB(A) |
Num: 122294 |
Avg:
-77.7 dB(A) |
Max:
-35.8 dB(A) |
|
Error
Muting Samples |
Num: 5510 |
Avg:
1.0 Samples |
Max: 40 Samples |
|
Skips
Samples |
Num: 0 |
Avg:
0.0 Samples |
Max:
0 Samples |
| Total Test Result |
75.3 points (out of 100.0 maximum) |
|
C2 Accuracy |
99.8 % |
The drive showed average to good performance although it could be better. The total error count is high and is spread over the whole disc. But the maximum error loudness is within acceptable limits and most important, there were no skipped samples.
- ABEX TCD-726
| Errors total |
Num: 3960 |
| Errors (Loudness) dB(A) |
Num: 5860 |
Avg: -83.8 dB(A) |
Max: -53.8 dB(A) |
| Error Muting Samples |
Num: 76 |
Avg: 1.0 Samples |
Max: 1 Samples |
| Skips Samples |
Num: 0 |
Avg: 0.0 Samples |
Max: 0 Samples |
| Total Test Result |
82.6 points (out of 100.0 maximum) |
| C2 Accuracy |
100.0 % |
The 726 test media, is not a problems for the majority of the latest drives. But in the case of Memorex, the performance was less than average. Since the Memorex is a NEC ND-4550A, it had similar performance to NEC drives...
- 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
|
|
Memorex 16X
|
5/5
|
5/5
|
5/5
|
2/5
|
0/5
|
The drive successfully passed 3 out of the five check levels for this test. Almost all drives have difficulties reading the 5th level but good quality drives can read the whole of the 4th level but unfortunately, the drive managed to read only 2 out 5 from the 4th level.
- Summary
Overall, the drive has good CD error correction.
