> I do not think that DDS can have any more robust error
> when playing DAT tapes than a DAT machine can as the
> additional interleaving and error correction codes are not
> in the DAT tape.
> That is not to say that DDS tapes themselves do not have
> more error CORRECTION than audio DATs. It's like CD-ROM
> (as I understand it) has another layer of error CORRECTION
> as opposed to audio CDs
When a DDS is used to extract audio, it is set to operate in
"Audio mode", which is one reason a straight-out -of the box
DDS drive might not work for this. The drive must be "Audio
Capable". The Sony SDT-9000 I have needed to have the
firmware upgraded before it would work. I don't know if any
extra layers of error correction or concealment are going on
when the drive is operating in audio mode.
I do find that tapes extracted with obvious glitches on the
DDS will generally play well on my Sony R-500.
The debris issue is something that makes me wary of using a
DDS drive for high volumes of work. I would appreciate any
advice on the best way to clean the heads on a DDS drive.
> I really want to know when someone has a "freelance" DDS
> DAT reading "factory" set up so I can refer people to
I have one DDS drive in my main computer, and have
transferred quite a few DATs, with mixed results. Some tapes
extracted perfectly, others with momemtary glitching which
was readily observable in a waveform. In most cases, these
are only a few samples long, and can be easily interpolated
with Wavelab's waveform restorer.
Sometimes the reading drive freaks out if it encounters a
gap in the ABS, resulting in a block of square-waves where
the audio should be. This also happens if the drive reads
past the end of the audio into non-ABS territory.
When I extract a drive that looks to have a lot of problems,
I attempt an spdif transfer with my R500. In most cases this
In general, I am excited about the prospect of using DDS,
but feel the presently available tools are not reliable
enough to guarantee good results I have a PC so I havent
tried any of the Mac tools, but any of the tools I have
found were written years ago, and have no support.
As I mentioned a few weeks ago, a yahoo group was recently
started dedicated to DDS audio (
http://tech.groups.yahoo.com/group/datheads2wav/ ), and one
member has been working on developing a new piece of
software for PCs (WinDAT.exe). I have used WinDAT and it
seems to do a pretty good job, at least as good as the
others I tried (DAT2WAV, VDAT) but it is still pretty
rudimentary and.The discussion there seems to have died off
in the last few months, but perhaps a few new members might
spark the discussion.