I've been away from this thread for a couple of days, and I haven't been
able to read every single post in detail - so hopefully I am not
repeating what someone has said before.

As far as I can tell, there really has been no progress on ability to
decode the additional HDCD info via software. In fact I think it is
intentionally not possible to decouple the process of recovering the
additional HDCD data and the D-A conversion process. 

With hardware based HDCD players, only 16bit redbook data is sent out
from the digital outputs at all times - the HDCD data is only recovered
at the stage of D-A conversion (whether internally in the disc player or
in a receiver or DAC). So the effects of HDCD encoding can only be
realized in the analog domain.

Probably it is the same deal with Windows Media Player as well. I
believe that the HDCD indicator simply tells you if you have an HDCD
disc or not. If you have a 16 bit card, then regardless of what the
indicator says you probably only get 16 bit redbook data. On the other
hand if you have a 24 bit card it might upscale the 16 bit data to 24
bit data in the digital domain without doing anything with the HDCD
information. However the analog outputs of the 24 bit souncards can
probably use the additional HDCD information when used with WMP. 

So no matter what we do, we can't ever convert a 16 bit HDCD stream
into a 20 bit or 24 bit linear PCM stream solely in the digital domain.
It should however be possible to re-digitize the analog output of a high
end HDCD converter - but I doubt there will be any advantage.

Am I making sense?


-- 
Nikhil
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View this thread: http://forums.slimdevices.com/showthread.php?t=32967

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