[vorbis] Here we go again...

[craig duncan]

Hongli Lai wrote:
> 
> On Monday 23 July 2001 14:38, you wrote:
> > On Sun, 22 Jul 2001, [Windows-1250] Jernej Simonèiè wrote:
> > When standalone CD player (or your CD-ROM when playing through
> > soundcard) encounters uncorrectable error on disc, it silences that
> > part of audio, as it's less hearable that pop or click. However, when
> > you digitally extract that same place, your ripper won't "turn the
> > volume down" for the click, but will simply write it to disk.
> >
> 
> Isn't it possible to detect read errors on disc, and then instead of
> digitalizing the error, digitalize the correction?
> 

That'll be the s/w that defeats this particular scheme.  Just a little ripper
add-on.  In regard to the question about pops & clicks vs. dropouts, the
(above) implied answer is that you _don't_ experience a dropout because the
CD format comprises a good deal of redunandancy in the form of extra error
correction data.  So they put errors on the disc but also the extra
redundancy data to correct the errors.  I can't believe anyone would think
this would defeat the hacker community's ability to program a ripper that
does exactly what Hongli wrote, though -- save the corrected data.

craig

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