I transferred all my old 48kHz DAT tapes to wav files by using a
non-resampling PCI board, the SEKD Prodif 96 Pro, now obsolete but
still working great on an old Pentium III with Windows 2000.
Unfortunately I was never able to transfer start-IDs nor the date and
time stamps.
The SEKD board accepts 32kHz and I presume that a 12 bits long-play
recording generates a standard 16 bits stream on the SPDIF interface.
But I never tried with long-play mode and I could be wrong.
I suggest to try with any SPDIF interface you find around, regardless
of resampling. If the recording transfers correctly, then you can try
to find a non-resampling interface.
If your main problem is to transfer start-ids and time information,
then I can't help.
Gianni
At 23.46 05/03/2006, you wrote:
>Notes at the end of Gianni's valuable anti-aliasing compilation brought up=
a
>long postponed task on which we would appreciate advice. There are many
>hours of DAT tape of (largely downconverted) bat audio recorded either
>manually or with a homebrew vox trigger for the D7 and D8; we need to
>digitally transfe this material to another medium, both to make it more
>accessible and preserve it against tape degradation.
>
>Some is 48 kHz/16bit and the rest is Sony's 32 kHz 12 bit non-linear long
>play. We needed the long record times for all night runs and
>naively presumed
>the 8-bit 20:1 downconversion of bat audio upstream of the DAT meant that
>the Sony digitization wasn't doing much more damage to the signal.
>
>The vox trigger (largely a modified wired remote) tapes can have a hundred
>plus 30 second events sampled through a night, so in transferring them to
>computer, the ideal system would involve software that reads the Sony
>real-time subcode, creates a separate file with each start ID, and names t=
he
>files with their start time.
>
>Gallery Software (UK) once offered a Mac hardware software kit (DATstudio)
>that seemed as if it could do this, but we couldn't afford it.
>Several years ago
>I tried a similar approach with an audio capable SCSI DAT drive (one of th=
e
>remaindered SGI units) coupled to a PC , and encountered reliability
>problems,
>though it was unclear whether this was a software or hardware issue.
>
>Now a large number of computer motherboards, add-on audio boards and
>external USB or Firewire devices have SPDIF-in; some list a wide range of
>input sampling rates. When their specs mention 32 kHz, does this mean the
>Pansonic DAT type linear rather the Sony non-linear or both? I'm unclear
>whether this is dependent on hardware, device firmware or audio capture
>software. Is the 32 kHz four channel audio that is part of the
>miniDV standard
>also 12 bit non-linear?
>
>As Gianni and others have pointed out, digital inputs in some devices are,
>unfortunately, always resampled, so it seems reasonable to avoid those.
>We have several generations of both Mac and PC computers around, so welcom=
e
>recommendations even if they require nominally obsolete system software.
>
>Thanks,
>
>Bill R.
>
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
>
>
>--
>No virus found in this incoming message.
>Checked by AVG Anti-Virus.
>Version: 7.1.375 / Virus Database: 268.1.2/274 - Release Date: 03/03/2006
--------------------------------------------------------------
Gianni Pavan
Email
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universita' degli Studi di Pavia
Via Taramelli 24, 27100 PAVIA, ITALIA
Tel +39-0382-987874
Fax +39-02-700-32921
Web http://www.unipv.it/cibra
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.1.375 / Virus Database: 268.1.2/274 - Release Date: 03/03/2006
________________________________________________________________________
________________________________________________________________________
|