Saturday, April 19, 2014
Search
  
Most Popular
Hardware Reviews
Optical Storage
WEB Reviews
Seagate Enterprise Capacity 3.5 V.3 4TB SAS 6Gb/s HDD Review
OCZ Vector 256GB SSD Review @ Custom PC Review
Gigabyte F2A85XM-D3H
NZXT Phantom 630
Auvio Bluetooth Portable Speaker Review
Corsair H90 CPU Cooler Review
BIOSTAR Hi-Fi Z77X (Intel Z77) Motherboard Review
Noctua NH-L9i Cooler Review on Technic3D
Breaking News
HTC Hired Ex-Samsung Marketing Officer
Xbox One Wolrdwide Sales Cross 5 million
Samsung Works With GLOBALFOUNDRIES On 14 nm FinFET Offering
Facebook To Find Nearby Friends
Console Sales Lift AMD's First Quarter Results
LG Expands 'Second Screen' TV Ecosystem With Open-Source SDK
Amazon Announces Kindle Service For Samsung Devices
Nokia Halts Sales Of Lumia 2520 Tablet
Home > Hardware Reviews > Optical Storage

Thursday, July 03, 2008
LiteOn DX-401S

3. Error correction tests - CD

This series of tests checks the drive's ability to correct/conceal possible erroneous data after reading artificially scratched / defective audio discs. The test discs used were the ABEX series from ALMEDIO.

Specifically, a software compares two audio files using FFT analysis. The first audio file has been extracted by a normal audio disc. The second one is the result of the extraction of the another disc which hold the same audio track, but it also has specific defects on its surface. The similarity factor of the the two tracks unveils the error correction capabilities of the drive.

The differences between the two compared tracks are translated to a signal (noise) illustrated in the following graphs.

- ABEX TCD-721R

Errors total
Num : 1082189
Errors (Loudness)
Num : 53071
Avg : -73,6 dB(A)
Max : -34,9dB(A)
Error Muting
Num : 3466
Avg : 1.0 Samples
Max : 9 Samples
Skips
Num : 0
Avg : 0,0 Samples
Max : 0 Samples
Total Test Result

LiteOn DX 401S

76,6 points ( of 100.0 maximum )

C2 accuracy : 99,7%

LiteON DH-401S
47.5 points
Pioneer BDC 202

75.3 points

In the graph above, one can note that the drive's performance was average. As soon as we move to the defected data area many errors were reported. In addition, error hiding mechanisms of the drive failed to keep the errors under the -60 db barrier, which is considered as the limit that when exceeded, problems in audio playback may be reported.

- ABEX TCD-726

Errors total
Num : 0
Errors (Loudness)
Num : 0
Avg : -174,0dB(A)
Max : -174,0dB(A)
Error Muting
Num : 0
Avg : 0,0 Samples
Max : 0 Samples
Skips
Num : 0
Avg : 0,0 Samples
Max : 0 Samples

Total Test Result

LiteOn DX 401S

100,0 points (of 100.0 maximum)
LiteON DH-401S
47.5 points
Pioneer BDC 202
83.9 points

The second test disc was easier to overcome. The drive responded flawlessly and successfully corrected all read errors.

- CD-Check Audio Test Disc

The CD-Check Test Disc is another 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 (e.g. 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
LiteOn DX 401S 5/5 5/5 5/5 5/5 0/5
LiteON DH-401S 5/5 5/5 5/5 5/5 0/5
Pioneer BDC 202
5/5
5/5
5/5
0/5
0/5

A good performance for the DX 401S drive here, successfully playing the first 4 tracks.




Get RSS feed Easy Print E-Mail this Message


 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .