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In Reply to: "Data... on a CD-R... are... immune to disc reading problems." That's interesting! nt posted by clarkjohnsen on April 15, 2007 at 11:52:52:
I meant as immune to any other data CD-R, as opposed to an audio CD,
which has significantly less powerful error correction.
CD plants can and do cut glass masters from an audio CD, but any
partially corrected or interpolated errors on playback become part of
the audio data on the master. By contrast, sending the plant a DDP file
set on a CD-R ensures that the audio data on the pressed CD are
identical to those in the master file.
John Atkinson
Editor, Stereophile
Follow Ups:
"CD plants can and do cut glass masters from an audio CD, but any partially corrected or interpolated errors on playback become part of the audio data on the master. By contrast, sending the plant a DDP file set on a CD-R ensures that the audio data on the pressed CD are identical to those in the master file."If data files stored on a data CD-R are more-immune to errors than audio tracks on an audio CD-R, what do DDP files have over .wav files, .aiff files, lossless-compressed (FLAC) files, or image files, stored as *data* on CD-R? (The .wav files on the CD seen on a computer in the actual .wav data format, as opposed to audio tracks in their ".cda" representation. Unplayable on a CD player.)
> If data files stored on a data CD-R are more-immune to errors than
> audio tracks on an audio CD-R, what do DDP files have over .wav files,
> .aiff files, lossless-compressed (FLAC) files, or image files, stored
> as *data* on CD-R?
The DDP file set is an image of the audio CD from which the glass master
can be cut directly.
John Atkinson
Editor, Stereophile
c
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