Whats DAT? Identifying & Prioritizing Magnetic Media NEA - - PowerPoint PPT Presentation

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Whats DAT? Identifying & Prioritizing Magnetic Media NEA - - PowerPoint PPT Presentation

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Whats DAT? Identifying & Prioritizing Magnetic Media NEA Spring Meeting - April 1, 2016 Jessica Bitely, NEDCC Rebecca Chandler, AVPreserve http://www.avpreserve.com/wp-content/uploads/2015/05/QuantifyingTheNeed.pdf 10 % 10 optical

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NEA Spring Meeting - April 1, 2016 Jessica Bitely, NEDCC Rebecca Chandler, AVPreserve

Identifying & Prioritizing Magnetic Media

What’s DAT?

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70 70% magnetic magnetic 10 10%

  • ptical
  • ptical

20 20% grooved grooved

audio formats in collections in the US

http://www.avpreserve.com/wp-content/uploads/2015/05/QuantifyingTheNeed.pdf

178 million preservation-worthy magnetic audio assets

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2028

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Degradation

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Obsolescence

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Lack of Intellectual Control

?

? ?

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PRIORITIZE!

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Technical Needs

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Content Value

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Use Value

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Cost to Digitize

=

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video

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= format commonly found in archives

mediaSCORE

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Beta variants

9.31” .31” 5.69” .69” 6.13” .13” 3.75” .75” 1982

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VHS

By Toby Hudson, CC BY-SA 2.5 au, https://commons.wikimedia.org/w/index.php?curid=23266237

1976 7.38” .38” 4.06” .06”

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DV variants

1995 4.88” .88” 3” 2.56” .56” 1.88” .88”

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Betamax

1975 6.13” .13” 3.75” .75”

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Video8 & hi8

1984 3.69” .69” 2.38” .38”

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U-matic

1971 8.63” .63”

  • r
  • r

7.25” .25” 5.38” .38” or 4

  • r 4.63”

.63”

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D1, D2, D3, D5

1980s 4.25” .25” up to 5 up to 5.88” .88” 6.75” .75” up to up to 10 10”

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Open Reel Videotape

1/2”, 1”, 2” (quad)

Image by Flickr user DRs Kulturarvsprojekt

1956

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Audio

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compact cassette, aka audiocassette

3.96” 1964 2 . 5 ”

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Micro Cassette Mini Cassette

2.2” 1 . 3 ” 2.4” 1 . 5 ” 1969

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8-track cartridge

4” 5.25” 1963

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dtrs, aka da-88

4.25” 3” 1993

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  • pen reel audio tape
  • 1. PVC
  • 2. polyester
  • 3. paper
  • 4. acetate

late 1940s

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  • pen reel audio tape

PVC and polyester

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  • pen reel audio tape

paper

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  • pen reel audio tape

acetate

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  • pen reel audio tape

1/4”, 1/2”, 1”, 2”

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Audio on Videocassette

U-matic 1600/1610/1630 PCM-F1 = betamax ADAT = VHS

ADAT-1991 PCM-F1-1982 U-matic 1600-early 1980s

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Wire Recording

1939

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digital audio tape, aka DAT

1987 2.87” 2.13”

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format equalizers

mold long play tapes funny smells unidentified goo flakes unspooled tape/broken carrier

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Each table is a team Each team has one prompt and one set of “tapes” Choose one team member to report findings Be ready at 2:30 to discuss!!!

work it.

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California Audiovisual Preservation Project - Audiovisual Formats, A Guide to Identification http://calpreservation.org/wp-content/uploads/2013/10/2013-Audiovisual- Formats_draft_webversion-2013oct15.pdf Preservation Self-Assessment Guide - Format ID Guide https://psap.library.illinois.edu/format-id-guide Texas Commission on the Arts - Videotape Identification and Assessment Guide http://www.arts.texas.gov/wp-content/uploads/2012/04/video.pdf Mike Casey, Why Media Preservation Can’t Wait: the Gathering Storm http://www.avpreserve.com/wp-content/uploads/2015/04/casey_iasa_journal_44_part3.pdf MediaSCORE & MediaRIVERS https://www.avpreserve.com/tools/mediascore-mediarivers/ FACET Format Characteristics and Preservation Problems http://www.dlib.indiana.edu/projects/sounddirections/facet/facet_formats.pdf National Endowment for the Humanities - Preservation Assistance Grants http://www.neh.gov/grants/preservation/preservation-assistance-grants-smaller-institutions

Resources

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IN THIS PRESENTATION ICONS FROM:

Noun Project: Noun Project: Andrew Forrester, Evert Jan Boon, Ryan Speziale, Vanessa Choi, Samu Parra, Alex Tai, Mister Pixel, Joe Mortell, Jon Testa, Herbert Spencer, Sandra M, Charlotte Vogel, vanila, Marie Van den Broeck, Alfredo Hernandez, Zane Ogle, Y E J I N

Thank you! jbitely@nedcc.org rebecca@avpreserve.com