[vorbis] Here we go again...

[Monty]

On Mon, Jul 23, 2001 at 10:38:04PM +1000, Geoff Shang 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.
> 
> hmmmm..So the ripped version will have pops and clicks, and the sound from
> standard players will contain drop-outs instead.  That's still not
> acceptable.  I don't want to pay for music with holes in it.

In the general case, an audio player will interpolate over obviously
bad samples, and there are Philips guidelines that tell when this
should happen.  CDROM drives *tend* not to do this; they hand back the
bits as read and may or may not give access to additional data (like
the ECC bits) that would allow external software to do a similar
interpolation.  Paranoia II had additional code that looked for
patterns of unstable bits over multiple reads.  Paranoia III doesn't
have this code as it tended to be very reliable on some drives, but
cause more trouble than it solves on others.

Monty

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