🚀 go-pugleaf

On Tue, 9 Jun 1998 03:21:56 +0200, "Erik" <erikd@REMOVETHISglo.be>
wrote:

>>>The results from my drives are:
>>I slightly doubt your test.

>The only thing that is wrong with the DAE quality is the offset.
>The offset is about 2000 bytes too early. This means that the 2000 first
>bytes from each track are actually the 2000 last bytes from the previous
>track.
>Problems like this cannot be detected by CD Speed.
>Anyway, I never have to use jitter correction with this drive.
>So unless the cd is badly damaged I always get perfect copies.
2000 eh? That's so wierd. It should be a multiple of 2352. 2000 sounds
like it's an intentional torpedo inserted by the manufacturer,
probably for copyright restrictions. Test my Panasonics to see if they
have any offset problems. Since they compare with the Plextors, I'd
say there's no problem.

>>>Ricoh MP6200A IDE
>>>Average DAE Speed: 6.0x
>>>DAE quality: 10 (perfect DAE)
>>This is what tells me something is wrong. No ROM version to date can
>>produce reliable DAE on this drive.
>Tested with v2.20.
I tested it with an older version and I probably haven't tested it
again. With these Panasonic drives, I could care less how other units
work. I recall too many complaints about DAE, mostly "I upgraded and
it still don't work..."

>The DAE quality test is very simple. CD Speed reads the first, middle and
>last 800 sectors from a disk and writes them to HD (audio.raw).
>Then it reads those sectors again and compares them with the file.
>If no differences are found then it gives a 10 for DAE quality.
Sounds like the test to me. I use 3 samples though. Some others have
tried more reads too.

>IMO the most reliable DAE quality test is when you extract tracks from a
>known source but for obvious reasons this is impractical.
If you have the Plextor, compare against that. It's the standard for
now.

>Anyway, if you have any suggestions for a more reliable DAE test, let me
>know :)
Your test sounds pretty good. I recall some of the tracks DAEing
correctly and some not. Maybe you just need to try more disks.

One major problem with the 6200A is that it doesn't do PIO3Mode1 so
you can use it by DMA transfers. Everything is PIO and slow.
--
-CJS severachAATTjacksonmi.DOT.NOSP@M.DOT.com
*The best and most defect free CDRW IDE CDROMs for DAE are the Panasonic 24x CR585/7B and 32x CR586/8B
*The best SCSI CDROMs for DAE are the Plextor 12, 12/20, and 14/32
*Most IDE drives do DAE poorly, most SCSI drives do DAE well
*If you're looking for IDE, you must get the right one and avoid the rest
*The best DAE software is WinDAC at http://members.aol.com/schmelnik/dac.html
*IDE Bus Mastering (BM) works best with Intel chips on Win95B or with Triones