passmore curatecamp 2015

QC Tools for Audio CDs

Pulse-code modulation

Figure 3. The pulse-code modulation stream to digital signal to analog signal chain. An Introduction to Optical Media Preservation, http://journal.code4lib.org/articles/9581

QC Tools for CD-DA$30,000 - $50,000

● Audio Development● DaTARIUS● Expert Magnetic Corporation

$3,000 - $8,000● Clover Systems

$0 - $25.00● Plextools PlexUtilities● QPxTools/Qscan● OptiDrive Control● Nero● PXScan/PXView

IASA TC-04

Fig 1. Section 8.1: Accumulated errors in a CD-R over time

8.1.11.6.1 There are a number of downloadable testers available online which use a computer’s inbuilt CD/DVD drive to measure error in written CD and DVDs. However, due to the limitations of the software and inaccuracy of the drives, most, if not all, are unsuitable for archival purposes.

PlextorThe results of the tests may differ from system to system, and should always be viewed in context, like test environment, used hardware, software, media, etc.

QPxTool/Qscan● open source● compatible with many drives● command line capability● unlock Plextor features (firmware hack)