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Digital Preservation Activities Update - ALA MidWinter 2006

Stay informed on digital preservation with updates from ALA MidWinter 2006 in San Antonio. Learn about standards, best practices, and preservation methods for your institution. Explore the importance of Preservation Masters, Access Copies, and Web-Accessible Copies.

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Digital Preservation Activities Update - ALA MidWinter 2006

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  1. Preserving Access for the Future: Updates on Various Activities in Digital Preservation ALA MidWinter 2006 San Antonio, TX

  2. Standards & Best Practices • Standards Out of Date • Call for analog tape • EBU has standard • Best Practices Abound • What’s best for your institution & situation

  3. Preservation Set • Preservation Master • Use & Access Copy • Web-Accessible Copy

  4. Preservation Master • Key Traits • Rarely accessed • Most important to manage • Typically 96kHz/24bit • .WAV or .BWF • “wave” or “broadcast wave” • Rarely, though sometimes still 1/4” analog

  5. Preservation Master • Key Advantages • Widely used • Higher resolution than 99% of sources • Better than most playback chains • Derivatives easily created • EBU Standard

  6. Preservation Master • Key Difficulties • No standard storage medium • Data tapes expensive to maintain • Too big for CD-ROM • On-line storage requires on-going maintenance • Internet Delivery impractical • 5x play time for T1 .ftp

  7. Preservation Master • Typical Solution • 96/24 on hard drive to digital library • Enterprise-level storage • 96/24 on DVD-ROM • Can be migrated easily to HDD when available • Do something else • Gold CD-R • CD-ROM

  8. Use & Access Copy • Key Traits (and Advantages!) • Readily accessible • User-friendly format • Good enough to substitute for Preservation Master is lost • Nearly Always CD-Audio

  9. Use & Access Copy • Key Difficulties (CD-Audio vs. CD-ROM) • CD-DA (digital audio) • Pure serial-read (can’t re-read to correct errors, even transient errors) • CD-ROM (digital audio as data) • Sector-based so can re-read (more reliable) • Requires computers (software, OS, etc) to retrieve • CD-DA more widely playable • CD-ROM more reliably played

  10. Use & Access Copy • Typical Solutions -- Depends somewhat on Preservation Master • CD-DA for near-universal playability • Multiple copies • CD-DA, one copy on “gold”, one on “green” • CD-ROM (gold?) and CD-DA (green) • Gold CD-R for Preservation Master, Green for U&A

  11. Web-Accessible Copy • Depends on Rights • RA & ACC more secure than mp3 or WMA • Depends on Needs • Too restricted to put on line • Beyond institutional abilities or needs • Perhaps as-needed only

  12. Questions? George Blood Safe Sound Archive georgeblood@safesoundarchive.com (215) 248-2100 www.safesoundarchive.com

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