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Home > Hardware Reviews > Optical Storage > DVD External

Friday, December 10, 2004
Philips ED16DVDR external

3. CD Error Correction Tests

Philips ED16DVDR DL Recorder - Page 3

CD Error Correction Tests

In the following tests we check the drive's behavior when it comes to reading scratched / defective discs. The test discs we use are the ABEX series from ALMEDIO.

The drive doesn't support C2 error information.

- ABEX TCD-721R

Errors total
Num: 839208
Errors (Loudness) dB(A)
Num: 49827
Avg:-74.3 dB(A)
Max: -36.0 dB(A)
Error Muting Samples
Num: 2651
Avg: 1.0 Samples
Max: 11 Samples
Skips Samples
Num: 0
Avg: 0.0 Samples
Max: 0 Samples
Total Test Result
77 points (out of 100.0 maximum)

The ED16DVDR drive performed very well in this test, although the total test result of 77 out of 100 can be considered as a little unfair. The total error count was rather low and the maximum error loudness level of -36.0dB(A) is below the limit of -35dB(A). The error muting sample count could have been lower but there were no 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
100.0 points (out of 100.0 maximum)

The Philips ED16DVDR received a perfect score of 100.0 with the Abex TCD-726 test disc.

- 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 difficult tests. These tracks are referred as Check Level-1 through Check Level-5.

The files are reproduced (played) through a software multimedia player (i.e. Windows Media Player). Each level is considered as passed, if the tone coming out from the speakers is smooth, continuous without interruptions, skipping or looping. The higher the Check Level passed, the more reliable the sound reproduction of the tested device.

Error Level
1
2
3
4
5
Philips ED16DVDR
5/5
5/5
5/5
0/5
0/5

An average but typical performance for this chipset. We would like it to be better though.

- Conclusion

The Philips ED16DVDR offers rather good CD error correction.




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