Monday, September 01, 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
Asus ZenWatch To Have Voice Control Features
Miraisens Showcases Touchable 3D Tech
Nintendo's Figurines Coming Later This Year
ASUS and G.Skill Take Overclocking Records
Korean Researchers Advance Synthesis Process for Graphene Quantum Dots
LG Display Opens LCD Panel Plant in China
Apple Said to Work With Visa, MasterCard on IPhone Wallet
China Gives Microsoft Deadline To Respond To Anti-trust Probe
Home > Hardware Reviews > Optical Storage > DVD Recorders Double Layer

Wednesday, June 08, 2005
Sony DRU-800A

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.

- ABEX TCD-721R

Errors total Num: 1176122
Errors (Loudness) dB(A) Num: 53465 Avg:-73.2 dB(A) Max: -34.9 dB(A)
Error Muting Samples Num: 3774 Avg: 1.0 Samples Max: 11 Samples
Skips Samples Num: 0 Avg: 6.0 Samples Max: 6 Samples
Total Test Result 76.5 points (of 100.0 maximum)
C2 Accuracy 99.8%

The overall performance according to the graph is rather good. The total error count is not high, which is good, and the maximum error loudness just on the -35 dB(A) limit. Also, no samples were skipped and the total test result of 76.5 out of 100 is good.

- ABEX TCD-726

Errors total Num: 0
Errors (Loudness) dB(A) Num:0 Avg: 0 Samples Max: 0 Samples
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 behavior of drive was much better in this case where it managed to correct all the disc's errors. The result was a perfect 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 ability 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 tracks 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
Sony DRU-800A 5/5 5/5 5/5 0/5 0/5

The drive passed only the first three Check Levels of the test. The performance reveals average performance with the specific test disc. The fourth and the fifth levels include an error size of 1.125mm and 1.500mm respectively, and the drive produced continuous audible clicks over those 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 .