[LAD] [OT] CD-R masters, block error rate and dvd-r mystery...
lucent at gmail.com
Sat Jul 26 22:39:12 UTC 2008
To get a more accurate idea of block errors, use a quality drive like a
Plextor and Robert Fuller's https://gna.org/projects/cued software. My
Plextor 712-SA does the trick. Be aware that the firmware of Plextor drives
does some error correction to achieve the extremely low jitter.
HA forums are awash with positive remarks about EAC (Exact Audio Copy on
Windows OS) being the best software, but it's unmaintained and does not do a
very good job of ripping CD audio.
Also, there is no fully capable software to rip/write CD media on a modern
*nix OS in raw96 mode. Without this mode, you don't have any way of knowing
what errors are actually existent on the media being produced (or read).
Most drives cook the error correction in various ways when ripping in other
modes. The official specifications for CD media formats are costly and not
easy to obtain.
What kind of deal does your friend get, that is worth all this trouble?
On Wed, Jul 23, 2008 at 3:06 PM, Joern Nettingsmeier <
nettings at folkwang-hochschule.de> wrote:
> hi anthony!
> thanks for your reply. i'm cc:ing the list so that others can benefit
> from it as well...
> Anthony Kozar wrote:
> > Hi Joern,
> > This is just a shot in the dark, but most audio CD tracks have a
> > time of 2 or more seconds. CD players will typically count down using
> > negative numbers for this time and the track is considered to begin after
> > the lead-in. Perhaps one of your drives (the DVD drive?) is reading the
> > lead-in as part of the track?
> > (2 seconds x 44100 samples/sec. x 2 channels x 2 bytes/sample = 352,000
> > bytes)
> i can rule this out, because although i used both a dvdr and cdr drive
> for burning, both cds were read back in using the cdr drive.
> any differences must have occured during burning. but since i used the
> same toc file and disk-at-once mode, it's unlikely that the lead-in got
> interpreted differently in both drives... but you are right, this being
> a live cd, i used pre-gaps and non-silent gaps extensively - i'll
> investigate some more along those lines.
> jörn nettingsmeier
> home://germany/45128 essen/lortzingstr. 11/
> Kurt is up in Heaven now.
> Linux-audio-dev mailing list
> Linux-audio-dev at lists.linuxaudio.org
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