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:
837969 |
|
Errors
(Loudness) dB(A)
|
Num: 46634 |
Avg:
-74.0 dB(A) |
Max:
-22.6 dB(A) |
|
Error
Muting Samples
|
Num: 2727 |
Avg:
1.4 Samples |
Max: 537 Samples |
|
Skips
Samples
|
Num: 0 |
Avg:
0 Samples |
Max:
0 Samples |
| Total Test Result |
76.7 points (out of 100.0 maximum) |
Good performance from the Philips DVDR1648P burner. The total error count
is rather low while most importantly, no samples were skipped. From the graph
we can see that the drive has a good CD error correction mechanism, with the
error loudness level being lower than -34.0 dB(A) except for a couple of
spikes which hit a maximum of -22.6 dB(A).
- 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) |
The ABEX TCD-726 test disc is always easier to read and the Philips DVDR1648P
had no problems at all reading it successfully, without a single error reported.
No skipped samples and no error muting samples indicate excellent performance.
This makes the burner a very good reader for defective CD media, in terms of
speed and readability.
- 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
|
| Philips DVDR1648P |
5/5
|
5/5
|
5/5
|
5/5
|
4/5
|
This disc is a very good test to determine a drive's CD error correction.
The fifth track is almost impossible to read with the majority of drives while
most fail even when reading the fourth track. In our case, the Philips drive
impressed us, reading all tracks and reporting a single audible click over the
fifth track and this, in just one out of the five repetitions.
- Summary
The overall performance of the burner with defective and problematic CD media
is very good. One of the best drives in this series of tests in comparison
to the latest drives, and not only.
