Re: [ARSCLIST] Long-term/preservation audio

[Mike Richter <mrichter@xxxxxxx>]

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
> programs.
>
> 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/