User manual NERO DISCSPEED

[. . . ] Manual Nero DiscSpeed Copyright and Trademark Information This document, like the software described therein, is provided as a license and may only be used or reproduced in accordance with the licensing agreement. The contents of this document, as well as the associated software, is subject to change without prior notice. Nero AG rejects any responsibility for the correctness of the contents of this document and rejects any claims that transcend the clauses of the guarantee agreement. This document and all of its contents are protected by copyright and are the property of Nero AG. [. . . ] In the On-the-fly copying area, the test determines whether an audio CD can be copied without causing errors at various speeds between 1x and 16x, i. e. indicates if the optical drive is suitable for use on-the-fly in combination with a recorder for backing up audio discs. The results of two tests are displayed in the Test results area: the Sequential read test and the Random read test. The sequential read test simulates the digital extraction of audio files (DAE) under ideal conditions and then runs a harmonic read test. This test helps you to identify errors on the disc. A search for data errors returns audio samples that were not read correctly, based on a comparison of the read bytes with the known data from the test disc. Minor data errors can be corrected using the drive's error correction feature. The most common cause of data errors is poor-quality discs. Avoid data errors by using high-quality discs and/or reducing the drive speed. Synchronization errors occur when, instead of reading the required audio sectors, an optical drive reads the adjacent sectors. Nero DiscSpeed uses special data on the test disc to check if the correct sectors are being read. Synchronization errors can result in samples being lost or repeated. These errors can be audible. Nero DiscSpeed window - Advanced DAE Quality Test Nero DiscSpeed 38 Additional Test - Advanced DAE Quality You can define preferences for the optical drive test in the Advanced features area. Optical drives start from different positions when reading audio sectors. There is also no standardized start position for the write process of recorders - there is usually a gap of a few hundred samples. The following check boxes are available: Read Leadin If this check box is enabled, the capability of the optical drive of reading the leadin is tested. To create perfect copies, an optical drive should begin reading data before the actual start position. Read Leadout If this check box is enabled, the capability of the optical drive of reading the leadout is tested. To create perfect copies, an optical drive should read data from the leadout. Read CD Text If this check box is enabled, the capability of the drive of reproducing CD Text is tested. Read Subchannel If this check box is enabled, the subchannel data is read during the Data test. Subchannel data contains information such as index markers. An optical drive must be able to reproduce this data if it is to create perfect audio copies. [. . . ] 13 Running the Advanced DAE Quality Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Running the quality test. . . . . . . . . . . . . . . . . . . . . . . . 25 Nero DiscSpeed 72 Index Running the ScanDisc Test . . . . . . . . . . . . . . . . . 31 Running the test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]