Tuesday, September 30, 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
Microsoft Previews Windows 10
Google Offers Unlimited Cloud Storage To Students
Gionee Announced The World's Thinnest Smartphone
MPEG LA Rolls Out HEVC License
PayPal To Become An Independent Publicly Traded Company in 2015
AMD To Showcase ARM Cortex-A57-Based Hadoop on Opteron Processors
SanDisk Introduces New X300 SSD And Client SSD Upgrade Service For Corporate Environments
TSMC and ARM Announce 16nm FinFET Silicon with 64-bit ARM big.LITTLE Technology
Home > Hardware Reviews > Optical Storage > DVD Recorders Double Layer

Thursday, December 08, 2005
HP840b

3. CD 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: 829339
Errors (Loudness) dB(A)
Num: 49764 Avg: -74.6 dB(A) Max: -19.8 dB(A)
Error Muting Samples
Num: 2687 Avg: 1.1 Samples Max: 89 Samples
Skips Samples
Num: 0 Avg: 0.0 Samples Max: 0 Samples
Total Test Result
76.9 points (out of 100.0 maximum)

The reported total errors is low as is the average loudness level. There were no skipped samples and in general the drive has a good CD-error correction mechanism.

- ABEX TCD-726

Errors total
Num: 2036
Errors (Loudness) dB(A)
Num: 3018 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)

With the 726 test disc, the results were very good, with flawless reading and a perfect total test result score.

- 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 (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
HP 840b
5/5
5/5
5/5
5/5
0/5

With this test disc, the drive reported very good results, achieving flawless reading in 4 out of 5 tracks. This is better than average performance.

- Summary

In general, a very convincing performance with all the test discs, in most cases better than average performance. With the CD-Check Audio test disc, the results were more than satisfying, as the drive managed to playback 4 out of 5 tracks, which is considered very good performance.




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 .