Philips DVDRW885K Double Layer - Page 3
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:
1062767
|
|
Errors (Loudness) dB(A)
|
Num:
52449
|
Avg:
-73.7dB(A)
|
Max:-11.5
dB(A)
|
|
Error Muting Samples
|
Num:
3106
|
Avg:
1.8 Samples
|
Max:
1140 Samples
|
|
Skips Samples
|
Num:
0
|
Avg:
0 Samples
|
Max:
0 Samples
|
|
Total Test Result
|
76.2
points (out of 100.0 maximum)
|
Although the overall score for the Philips drive is not the best we have seen,
the score of 76.2 points was quite
acceptable, the 721R test disc being a difficult disc to read. During the
error correction test, the software reported 1062767 total
errors, which is about average. An average number of 1.8 samples were muted
while no samples were skipped, meaning
that the drive managed to process all errors.
- ABEX TCD-726
|
Errors total
|
Num:
0
|
|
Errors (Loudness) dB(A)
|
Num:
4
|
Avg: -94.0dB(A)
|
Max:
-87.6 dB(A)
|
|
Error Muting Samples
|
Num:
0
|
Avg: 0 Samples
|
Max:
0 Samples
|
|
Skips Samples
|
Num:
1
|
Avg:
185.0 Samples
|
Max:
185 Samples
|
|
Total Test Result
|
83.6
points (out of 100.0 maximum)
|
This test disc is usually a lot easier for drives to read and as such the
final score awarded is much higher than that from the previous test disc. While
the score of 83.6 is good, the better drives normally manage a perfect score
of 100.
- 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 reading music abilities
and reproduce it completely. Five tracks on the disc contain a progressively
difficult sequence. These tracks are referred to as Check Level-1 through
Check Level-5.
The
tracks are reproduced (played) through a software multimedia player (i.e.
Winamp, PowerDVD, Windows Media Player). Each level is considered as passed,
if the tone coming out
from the speakers is clear and continuous without interruptions, skipping
or looping. The higher the Check Level passed, the more reliable the sound
reproduction
of the drive.
|
Error Level
|
1
|
2
|
3
|
4
|
5
|
|
Philips DVDRW885K |
5/5
|
5/5
|
5/5
|
5/5
|
0/5
|
Inspite of the fact that the drive didn't manage to play the fifth track,
it performed well. Note that the fifth track is very difficult for all but
the best of drives to play, while most drives can't even read the fourth track.
- Summary
|
Test Disc
|
Reading Speed
|
Score
|
|
ABEX TCD-721R |
Max
|
76.2
|
|
ABEX TCD-726 |
83.6
|
|
Average Score |
79.9
|
The overall average score for the Philips DVDRW885K is 79.9 points
out of 100.
