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Felix Dollinger Felix Dollinger is offline
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Default DAT = .WAV @ changing sampling rates

Hi all,

I just found some old DAT tapes that I used years ago for taping concerts
with my Sony TCD-D7 "DAT-Walkman". As this device broke down a while ago I
would now like to use a friend's TCD-D8 to transfer all my all DAT tapes to
my PC as *.wav files (for backup on DVD).

I have two soundcards that support S/PDIF (RME Digi32 and Terratec EWX
24/96) and the digital cable to connect the DAT device to my PC. For DAT
tapes only containing music at one sampling rate (e.g. 48kHz), that all
works out perfectly. Unfortunately, however, many of the tapes contain both
SP (48 kHz) and LP (32 kHz) junks of music, sometimes even having blank
space in between. The software I'm using (WaveLab 4.0) can't handle these
changes in sampling rate.

Does anyone know a way how to handle these changes in sampling rate
automatically? Just generating a new file every time the sampling rate
changes would be good enough, I just don't know how to do it...

Any help is greatly appreciated!

Thanks,

Felix


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Scott Dorsey Scott Dorsey is offline
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Default DAT = .WAV @ changing sampling rates

Felix Dollinger wrote:
I have two soundcards that support S/PDIF (RME Digi32 and Terratec EWX
24/96) and the digital cable to connect the DAT device to my PC. For DAT
tapes only containing music at one sampling rate (e.g. 48kHz), that all
works out perfectly. Unfortunately, however, many of the tapes contain both
SP (48 kHz) and LP (32 kHz) junks of music, sometimes even having blank
space in between. The software I'm using (WaveLab 4.0) can't handle these
changes in sampling rate.


You will have to stop the machine and restart. Note that there are two
different 32 Ksamp/sec standards also... one of them uses a nonlinear
encoding scheme as well.

Does anyone know a way how to handle these changes in sampling rate
automatically? Just generating a new file every time the sampling rate
changes would be good enough, I just don't know how to do it...


How many tapes do you have to do? And why did you change rates on the
same tape in the first place? Think of it as a transcription job... just
do it by hand, carefully, one minute at a time, and if you make sure it's
done perfectly you won't have to do it again.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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philicorda[_3_] philicorda[_3_] is offline
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Default DAT = .WAV @ changing sampling rates

On Wed, 25 Apr 2007 21:19:48 +0200, Felix Dollinger wrote:

Hi all,

I just found some old DAT tapes that I used years ago for taping concerts
with my Sony TCD-D7 "DAT-Walkman". As this device broke down a while ago I
would now like to use a friend's TCD-D8 to transfer all my all DAT tapes to
my PC as *.wav files (for backup on DVD).

I have two soundcards that support S/PDIF (RME Digi32 and Terratec EWX
24/96) and the digital cable to connect the DAT device to my PC. For DAT
tapes only containing music at one sampling rate (e.g. 48kHz), that all
works out perfectly. Unfortunately, however, many of the tapes contain both
SP (48 kHz) and LP (32 kHz) junks of music, sometimes even having blank
space in between. The software I'm using (WaveLab 4.0) can't handle these
changes in sampling rate.

Does anyone know a way how to handle these changes in sampling rate
automatically? Just generating a new file every time the sampling rate
changes would be good enough, I just don't know how to do it...


When you say that Wavelab can't handle the sample rate changes, do you
mean it glitches and corrupts the data, or just plays back at the wrong
speed?

If it's just the wrong speed then it could be easier to chop the file up
after transferring it and set the correct sample rate for each section. At
least you would then not have to transfer one section at a time and hang
about the DAT recorder all day.


Any help is greatly appreciated!

Thanks,

Felix

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Arny Krueger Arny Krueger is offline
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Default DAT = .WAV @ changing sampling rates

"Felix Dollinger" wrote in message

Hi all,

I just found some old DAT tapes that I used years ago for
taping concerts with my Sony TCD-D7 "DAT-Walkman". As
this device broke down a while ago I would now like to
use a friend's TCD-D8 to transfer all my all DAT tapes to
my PC as *.wav files (for backup on DVD).
I have two soundcards that support S/PDIF (RME Digi32 and
Terratec EWX 24/96) and the digital cable to connect the
DAT device to my PC. For DAT tapes only containing music
at one sampling rate (e.g. 48kHz), that all works out
perfectly. Unfortunately, however, many of the tapes
contain both SP (48 kHz) and LP (32 kHz) junks of music,
sometimes even having blank space in between. The
software I'm using (WaveLab 4.0) can't handle these
changes in sampling rate.


I've had this problem - its not uncommon with some DAT recorders. They would
record analog inputs at a preset sample rate, often 48 KHz, and digital
inputs at the sample rate of the digital input. This would produce a tape
with tracks that were an odd combination of files at different sample rates.

Does anyone know a way how to handle these changes in
sampling rate automatically?


Don't bother trying.

Just generating a new file
every time the sampling rate changes would be good
enough, I just don't know how to do it...


Transcribe each tape as one file at a convenient sample rate - hopefully the
one that is the most commonly used.

Then using your DAW software, break it up into track files, and set the
appropriate sample rate for each track file as required. Note that I didn't
say resample, I said set the sample rate. If your DAW software won't do
this, Audacity (freeware) will.


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Ty Ford Ty Ford is offline
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Default DAT = .WAV @ changing sampling rates

On Wed, 25 Apr 2007 15:19:48 -0400, Felix Dollinger wrote
(in article ):

Hi all,

I just found some old DAT tapes that I used years ago for taping concerts
with my Sony TCD-D7 "DAT-Walkman". As this device broke down a while ago I
would now like to use a friend's TCD-D8 to transfer all my all DAT tapes to
my PC as *.wav files (for backup on DVD).

I have two soundcards that support S/PDIF (RME Digi32 and Terratec EWX
24/96) and the digital cable to connect the DAT device to my PC. For DAT
tapes only containing music at one sampling rate (e.g. 48kHz), that all
works out perfectly. Unfortunately, however, many of the tapes contain both
SP (48 kHz) and LP (32 kHz) junks of music, sometimes even having blank
space in between. The software I'm using (WaveLab 4.0) can't handle these
changes in sampling rate.

Does anyone know a way how to handle these changes in sampling rate
automatically? Just generating a new file every time the sampling rate
changes would be good enough, I just don't know how to do it...

Any help is greatly appreciated!

Thanks,

Felix



The new Renegadelabs Blue|328 mixer has a sample rate card that squinks
anything to 48 k, but I don't know if it goes down to 32 khz.

I think the old Audicy used to do sample rate on the fly, but I forget.

Regards,

Ty Ford

--Audio Equipment Reviews Audio Production Services
Acting and Voiceover Demos http://www.tyford.com
Guitar player?:http://www.youtube.com/watch?v=4RZJ9MptZmU



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Mike Rivers Mike Rivers is offline
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Posts: 8,744
Default DAT = .WAV @ changing sampling rates

Felix Dollinger wrote:

would now like to use a friend's TCD-D8 to transfer all my all DAT tapes to
my PC as *.wav files (for backup on DVD).

I have two soundcards that support S/PDIF (RME Digi32 and Terratec EWX
24/96) and the digital cable to connect the DAT device to my PC. For DAT
tapes only containing music at one sampling rate (e.g. 48kHz), that all
works out perfectly. Unfortunately, however, many of the tapes contain both
SP (48 kHz) and LP (32 kHz) junks of music


Don't make this so hard on yourself. Connect the analog output from the
DAT to the analog input of your sound card, play the tape, and record to
the computer. Is there REALLY enough to lose to be worth worrying about?
While the D/A converter in a TCD-D8 isn't the greatest, it's plenty good
enough for old tapes of concerts. It's not going to be any worse than
running a sample rate conversion program on a digital transfer, and it
will allow you to make level adjustments if necessary.
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Geoff Geoff is offline
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Default DAT = .WAV @ changing sampling rates

Felix Dollinger wrote:
Hi all,

I just found some old DAT tapes that I used years ago for taping
concerts with my Sony TCD-D7 "DAT-Walkman". As this device broke down
a while ago I would now like to use a friend's TCD-D8 to transfer all
my all DAT tapes to my PC as *.wav files (for backup on DVD).

I have two soundcards that support S/PDIF (RME Digi32 and Terratec EWX
24/96) and the digital cable to connect the DAT device to my PC. For
DAT tapes only containing music at one sampling rate (e.g. 48kHz),
that all works out perfectly. Unfortunately, however, many of the
tapes contain both SP (48 kHz) and LP (32 kHz) junks of music,
sometimes even having blank space in between. The software I'm using
(WaveLab 4.0) can't handle these changes in sampling rate.

Does anyone know a way how to handle these changes in sampling rate
automatically? Just generating a new file every time the sampling rate
changes would be good enough, I just don't know how to do it...



Stop playback after one segment, change the i/c sample rate setting, cue the
DAT up to the new SR segment and record the next bit.

Tedious, eh !

geoff


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