"LukeS" <> wrote in message
news:B65230B6-12FC-4184-8284-...
> Hi Vincent,
> I respectfully disagree, this is definitely a bug, no doubt about it. It
> clearly states in options -> devices -> speakers -> properties
>
> "This option enables higher-quality audio CDs, such as HDCDs, to play back
> at their full audio quality." Thus this must be checked too allow HDCD
> playback.
>
> You must have a 24-bit audio card to play the 20-bit HDCD audio data.
> Many
> standard 16-bit audio cards found in most computers will not support this
> so
> windows media player do not decode the HDCD data and sends the CD PCM data
> to
> the sound card at the standard 16-bit. Since there are no 20-bit DAC \
> soundcards when HDCD decoding is enabled the 20-bit decoded data is padded
> out to 24-bit and then sent to the sound card (the sound card then sends
> the
> 24-bit audio data to the DAC at 24-bits).
>
> How do we get a developers attention on this issue?
>
>
Hi
I have to first say that I don't actually have any HDCD's.
And all I can gather is that for playback of such HDCD's requires
compatible hardware (which you have), or playback defaults to
the red book sixteen binary digits and bandlimited (16bit/44khz)
This seems to be so that such disc's are also compatible with
all cd players and media players etc.
Regardless if the logo displays, I'd assume one could easily discern
if playback is actually the HDCD encoded content or 16 bit
red book content.
It's not clear if the problem is that when you have correctly configured
your hardware + software, that playback defaults to red book 16bit
playback or if HDCD content playback is achieved in all it's glory
but just that the logo dosen't display?
If it is defaulting to 16 bit playback, I'd first suspect configuration
settings to be the prime culprit, double check you have it all configured
correctly. But it could also be a number of issues causing to default to
16 bit - copy protection or DRM of some sort maybe? A soundcard driver
update? Or a visit to the support/troubleshooter/FAQ of the manufacturer
of your soundcard - it maybe an issue known to them?
If it is just the logo fails to display but HDCD playback is achieved
then that would indicate it is indeed a bug with WMP?
As for reporting it as a bug, well a brief search engine scout reveals
it to be a longstanding annoyance with many, and reported many times.
Just one example which you may like to try, turn on Hardware acceleration
(though that didn't work for that HDCD devotee)
http://www.atforumz.com/archive/index.php/t-304147.html
From the same thread as above was this link:
http://www.hydrogenaudio.org/forums/...ic=30999&st=25
Though at first it may not seem relevent to your problem, the issue
seems to be copying HDCD content. It seems from other results that
HDCD content cannot be fed via the digital outputs of standalone players -
the output from coax and fibre optic outputs of such players to off board
DAC's will be 16bit only, not the higher sampling 20bit HDCD content?
Again, this may not be relevent to you, but a search revealed that owners
of standalone HDCD capable cd players found that they had to disable
the digital outputs of their machines to achieve HDCD playback on those
machines? This would seem to be a token gesture to prevent HDCD copying.
This shouldn't be an issue with a PC as the drive would be iDE or SATA and
capable of of full bandwidth transfer amyway, but you could try disabling
the digital outputs of your soundcard to see if that is the reason HDCD
refuses
to play ball?
But, your problem caught my attention, though I don't have a solution nor
experiance of HDCD, your problem seems to be a longstanding known issue.
You could try wading through all the results a search produces as somewhere
in there someone may have a solution or had received an explaination from
Microsoft. Try these search terms in google, ask, etc:
HDCD media playback (also try adding OS and version of WMP in serach term)
HDCD logo problem
HDCD problem
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