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Re: [ARSCLIST] Long-term/preservation audio

At 07:38 AM 6/26/2003 -0700, Jerome Hartke wrote:
Although the Red Book CD-DA has two levels of error correction using a
cross-interleave Reed-Solomon code, an additional safeguard against
degradation is available using CD-ROM Mode 1. This format adds a
powerful, third level of error correction using a Reed-Solomon product
code. (This third level is not available in CD-ROM Mode 2.)

Although use of Mode 1 requires conversion of audio to WAV or other
formats in order to obtain files, the additional effort should be
mandatory for archival purposes. In addition, use ISO 9660 Level 1
volume and file structure, and disc-at-once recording. These options
should be selectable in any professional grade recording software

Of course, media and recording drive quality are also very important.

I agree completely on the need to archive as data and to take advantage of the extra level of error correction, but note that that is also available in Mode 2 Form 1. I know of no reason to prefer that to Mode 1, but it is available and does provide the additional protection.

Mike mrichter@xxxxxxx http://www.mrichter.com/

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