on 1/4/00 3:48 PM, Paul Ratazzi at [EMAIL PROTECTED] wrote:
> I've also tried both of the above using a Sony MDS-S37 deck. The only
> difference is that the deck just sits there as if there was no input at all.
> Normally, for a protected source, this deck with display "Cannot Copy." I
> know that it is seeing some kind of signal because the "Din Unlocked"
> display disappears when the source is present.
>
> What's the deal with the Dolby source causing the "NO COPY" on the R50? Is
> there some kind of additional copy protect beyond the SCMS? Or is it that
> the Dolby signal is somehow different and the MD recorder just can't read it
> properly?
That's exactly the case. The Dolby Digital stream is encoded differently to
a standard PCM digital stream and cannot be read by MD or DAT decks. The
recorder will be aware that some kind of signal is being fed to it, but
cannot understand what to do with it. My Sony DAT deck sees a signal if I
attach the coax digital output of my Creative Encore DVD decoder card to it,
but can't decode anything - but if the DVD has a PCM or MPEG-1 audio track,
a standard S/PDIF signal is sent out instead, which the DVD deck can lock
onto.
>If the latter is true, what options do I have for making a
> digital recording of the source?
The only way I can think of is to extract the audio track from the source
disc using one of the utilities lurking around on the net, then load the
resulting AC3 file into a program like Sonic Foundry's SoftEncode and
re-save it as a standard wave file. This method, of course, involves some
seriously expensive software and possible copyright violation :-)
- Anthony
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