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Preserving Access for the Future: Updates on Various Activities in Digital Preservation

Preserving Access for the Future: Updates on Various Activities in Digital Preservation. ALA MidWinter 2006 San Antonio, TX. Standards & Best Practices. Standards Out of Date Call for analog tape EBU has standard Best Practices Abound What ’ s best for your institution & situation.

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Preserving Access for the Future: Updates on Various Activities in Digital Preservation

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 Standards & Best Practices • Standards Out of Date • Call for analog tape • EBU has standard • Best Practices Abound • What’s best for your institution & situation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