1/22/2006 Columbia University Notable New Yorkers … Project objective –Digitally preserve oral history recordings on variety of media and paper or electronic transcripts of interviews

1/22/2006 Columbia University Notables New Yorkers include »John B. Oakes »Bennett Cerf »Kenneth Clark »Ed Koch »Mary Lasker »Frances Perkins »Mamie Clark

1/22/2006 Columbia University Source files –Analog cassettes 5” and 7” reels –Lengths: 7 minutes to in excess of 67 hours –Typed transcripts 100 pages to maximum 5,566 pages –Binders –MS Word files

1/22/2006 Columbia University Recorded media to be re-recorded to common file digital format –Create preservation masters and access copies »Preservation masters: 96kHz/24bit WAVE files »Access copies: 44.1kHz/16 bit WAV files »Web-accessible copies:.mp3 format

1/22/2006 Columbia University Transcripts –OCLC to provide to CUL Archival TIFF images Re-keyed files Electronically formatted interviews

1/22/2006 Columbia University Physical condition assessment –Interview transcripts quality varied Moderate to extensive written revisions & edits –Audio files varied in quality & format None provided for preview Known life-expectancies & recovery issues for media (audio cassette, reel-to-reel, etc.) No evidence of ‘sticky shed’ or vinegar syndrome identified by library

1/22/2006 Columbia University Recommended workflow –OCLC p/u materials at CUL –OCLC deliver audio masters to Safe Sound Archive –OCLC to return material to CUL

1/22/2006 Columbia University Digitization specifications –OCLC delivered bi-tonal text pages 1-bit TIFF Group IV TIFF compression 600 dpi –XML mark-up of full-text OCLC facilitated –Re-keying with 99.95% accuracy TEI-Lite DTD mark-up

1/22/2006 Columbia University Audio reformatting specifications & workflow –Transmittal and trafficking policies Database customization Material log-in Cross-checking against packing list

1/22/2006 Columbia University Evaluation & engineers notes –Compact audio cassettes played back on Nakamichi cassette decks w/mechanical & electrical playback alignments –Digitization w/Prism Sound analog to digital converters Output 96kHz/24bit preservation master & 44.1kHz access copy concurrently

1/22/2006 Columbia University Reel-to-reel tapes played back on Studer tape decks –With mechanical & electrical playback alignments –Digitization w/Prism Sound analog to digital converters Output 96kHz/24bit preservation master & 44.1kHz access copy concurrently

1/22/2006 Columbia University CUL elected semi-monitored approach –Up to 3 originals transferred simultaneously –SSA guarantees 1:1 representation –Monitoring alternative – 100% monitored

1/22/2006 Columbia University Quality Control Procedures OCLC performs 100% quality assurance of all original TIFF images –Reviewed for completeness, alignment, illumination regularity, and detail consistency throughout image »SW allows 1:1 viewing, 100%+ and reduced full-page view

1/22/2006 Columbia University Quality Control Procedures SSA expects zero returns or rework –Achieved via database automation of file naming (reduces human error) –Each file on delivery medium opened & auditioned on separate computer – to assure recoverability –Each file beginning & end to assure completeness

1/22/2006 Columbia University Quality Control Procedures SSA expects zero returns or rework –And spot-checked throughout for consistency –File names checked by separate person for naming and contents against original recordings »Person also proofs file headers

1/22/2006 Columbia University File Delivery –Text files – XML as per CUL specifications Challenges encountered due to variations in the interview format/transcript format (some memoir style, some strict Q&A format) –Audio files: Portable hard drives –ftp impractical due to file size »Est. 270GB = 1,000 hours connect time

1/22/2006 Columbia University Digital Archive –CUL files delivered for uploading to the OCLC Digital Archive repository

1/22/2006 Columbia University Client acceptance of deliverables –OCLC standard: 30-day image file retention –Planned 30-day customer acceptance period

1/22/2006 Q & A